LTB2 [Linear]
Rail-to-Rail Input and Output, Ultralow 1.9n Root Hz Noise, Low Power Op Amps; 轨至轨输入和输出，超低1.9n根Hz的噪声，低功耗运算放大器
| 型号： | LTB2 |
| 厂家： | 
Linear |
| 描述： | Rail-to-Rail Input and Output, Ultralow 1.9n Root Hz Noise, Low Power Op Amps |
| 文件： | 总24页 (文件大小：580K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT6202/LT6203/LT6204
Single/Dual/Quad 100MHz,
Rail-to-Rail Input and Output,
Ultralow 1.9nV/√Hz Noise, Low Power Op Amps
U
DESCRIPTIO
FEATURES
■
Low Noise Voltage: 1.9nV/√Hz (100kHz)
Low Supply Current: 3mA/Amp Max
Gain Bandwidth Product: 100MHz
Dual LT6203 in Tiny DFN Package
Low Distortion: –80dB at 1MHz
Low Offset Voltage: 500µV Max
Wide Supply Range: 2.5V to 12.6V
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Common Mode Rejection Ratio 90dB Typ
Unity Gain Stable
Low Noise Current: 1.1pA/√Hz
Output Current: 30mA Min
The LT®6202/LT6203/LT6204 are single/dual/quad low
noise, rail-to-rail input and output unity gain stable op
amps that feature 1.9nV/√Hz noise voltage and draw only
2.5mA of supply current per amplifier. These amplifiers
combineverylownoiseandsupplycurrentwitha100MHz
gain bandwidth product, a 25V/µs slew rate, and are
optimized for low supply signal conditioning systems.
■
■
■
■
■
■
■
■
■
■
■
■
■
These amplifiers maintain their performance for supplies
from 2.5V to 12.6V and are specified at 3V, 5V and ±5V
supplies. Harmonic distortion is less than –80dBc at
1MHz making these amplifiers suitable in low power data
acquisition systems.
The LT6202 is available in the 5-pin SOT-23 and the 8-pin
SO, while the LT6203 comes in 8-pin SO and MSOP pack-
ages with standard op amp pinouts. For compact layouts
the LT6203 is also available in a tiny fine line leadless
package (DFN), while the quad LT6204 is available in the
16-pin SSOP and 14-pin SO packages. These devices can
be used as plug-in replacements for many op amps to
improve input/output range and noise performance.
Operating Temperature Range –40°C to 85°C
U
APPLICATIO S
■
Low Noise, Low Power Signal Processing
■
Active Filters
■
Rail-to-Rail Buffer Amplifiers
■
Driving A/D Converters
■
DSL Receivers
, LTC and LT are registered trademarks of Linear Technology Corporation.
■
Battery Powered/Battery Backed Equipment
U
TYPICAL APPLICATIO
Low Noise 4- to 2-Wire Local Echo Cancellation Differential Receiver
Line Receiver Integrated Noise 25kHz to 150kHz
–
2k
1/2 LT1739
+
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
50Ω
1k
1k
–
1/2 LT6203
1:1
+
V
V
L
V
R
•
•
D
LINE
100Ω
LINE
LINE
DRIVER
RECEIVER
+
1/2 LT6203
–
+
50Ω
1k
1k
0
20 40 60
80
100 160
120 140
1/2 LT1739
2k
BANDWIDTH (kHz)
–
6203 TA01a
6203 • TA01b
620234fa
1
LT6202/LT6203/LT6204
W W U W
ABSOLUTE AXI U RATI GS
(Note 1)
Total Supply Voltage (V+ to V–) ............................ 12.6V
Input Current (Note 2) ........................................ ±40mA
Output Short-Circuit Duration (Note 3)............ Indefinite
Operating Temperature Range (Note 4) ...–40°C to 85°C
Specified Temperature Range (Note 5)....–40°C to 85°C
Junction Temperature........................................... 150°C
Junction Temperature (DD Package) .................... 125°C
Storage Temperature Range ..................–65°C to 150°C
Storage Temperature Range
(DD Package) ........................................–65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
U
W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
TOP VIEW
+
NC
–IN
+IN
1
2
3
4
8
7
6
5
NC
OUT 1
–
5 V
+
–
+
V
V
2
OUT
NC
+IN 3
4 –IN
–
V
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
TJMAX = 150°C, θJA = 250°C/W
ORDER PART
NUMBER
S5 PART
MARKING*
ORDER PART
S8 PART
MARKING
NUMBER
LT6202CS5
LT6202IS5
LTG6
LT6202CS8
LT6202IS8
6202
6202I
TOP VIEW
TOP VIEW
+
TOP VIEW
+
OUT A
1
2
3
4
8
7
6
5
V
V
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
+
OUT A
1
2
3
4
8 V
–IN A
+IN A
OUT B
–IN B
+IN B
OUT B
–IN B
+IN B
–
+
A
–
+
–IN A
+IN A
7 OUT B
6 –IN B
5 +IN B
–
+
–
+
B
–
–
V
V
–
V
MS8 PACKAGE
8-LEAD PLASTIC MSOP
DD PACKAGE
S8 PACKAGE
8-LEAD PLASTIC SO
8-LEAD (3mm × 3mm) PLASTIC DFN
T
JMAX = 150°C, θJA = 250°C/W
TJMAX = 125°C, θJA = 160°C/W
UNDERSIDE METAL CONNECTED TO V–
TJMAX = 150°C, θJA = 190°C/W
ORDER PART
DD PART
MARKING*
ORDER PART
NUMBER
MS8 PART
MARKING
ORDER PART
NUMBER
S8 PART
MARKING
NUMBER
LT6203CDD
LT6203IDD
LAAP
LTB2
LTB3
LT6203CS8
LT6203IS8
LT6203CMS8
LT6203IMS8
6203
6203I
*The temperature grades are identified by a label on the shipping container.
620234fa
2
LT6202/LT6203/LT6204
U
W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
NUMBER
ORDER PART
TOP VIEW
NUMBER
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
8
16 OUT D
15 –IN D
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
14
– 13
+ 12
11
OUT D
–IN D
+IN D
–
+
+–A
LT6204CS
LT6204IS
D
C
LT6204CGN
LT6204IGN
+–A
14
13
12
11
10
9
+IN D
D
C
+
–
V
V
+
–
V
V
+
+
–
+IN B
–IN B
OUT B
NC
+IN C
–IN C
OUT C
NC
–B
+
+IN B
–IN B
OUT B
+ 10
+IN C
–IN C
OUT C
–
B
GN PART
MARKING
–
9
8
S PACKAGE
14-LEAD PLASTIC SO
6204
6204I
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
TJMAX = 150°C, θJA = 150°C/W
TJMAX = 150°C, θJA = 135°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
TA = 25°C, VS =5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply,
unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
V = 5V, 0V, V = Half Supply
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
OS
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
0.1
0.1
0.5
0.7
mV
mV
V = 3V, 0V, V = Half Supply
LT6203, LT6204, LT6202S8
LT6202 SOT-23
S
CM
0.6
0.6
1.5
1.7
mV
mV
+
–
V = 5V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
0.25
0.25
2.0
2.2
mV
mV
+
–
V = 3V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
1.0
1.0
3.5
3.7
mV
mV
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
= Half Supply
= V to V
0.15
0.3
0.8
1.8
mV
mV
CM
CM
–
+
I
Input Bias Current
V
V
V
= Half Supply
–7.0
–8.8
–1.3
1.3
–3.3
µA
µA
µA
B
CM
CM
CM
+
= V
2.5
–
= V
–
+
∆I
B
I Shift
V
= V to V
4.7
0.1
11.3
0.6
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
I
Input Offset Current
V
V
V
= Half Supply
0.12
0.07
0.12
1
1
1.1
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
Input Noise Voltage
0.1Hz to 10Hz
f = 100kHz, V = 5V
800
nV
P-P
e
Input Noise Voltage Density
2
2.9
nV/√Hz
nV/√Hz
n
S
f = 10kHz, V = 5V
4.5
S
i
Input Noise Current Density, Balanced
Input Noise Current Density, Unbalanced
f = 10kHz, V = 5V
0.75
1.1
pA/√Hz
pA/√Hz
n
S
Input Resistance
Common Mode
Differential Mode
4
12
MΩ
kΩ
620234fa
3
LT6202/LT6203/LT6204
ELECTRICAL CHARACTERISTICS
TA = 25°C, VS =5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply,
unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
C
A
Input Capacitance
Common Mode
Differential Mode
1.8
1.5
pF
pF
IN
Large Signal Gain
V = 5V, V = 0.5V to 4.5V, R = 1k to V /2
40
8.0
17
70
14
40
V/mV
V/mV
V/mV
VOL
S
O
L
S
V = 5V, V = 1V to 4V, R = 100 to V /2
S
O
L
S
V = 3V, V = 0.5V to 2.5V, R = 1k to V /2
S
O
L
S
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
60
80
56
83
100
80
dB
dB
dB
S
CM
V = 5V, V = 1.5V to 3.5V
S
CM
–
+
V = 3V, V = V to V
S
CM
CMRR Match (Channel-to-Channel) (Note 6)
Power Supply Rejection Ratio
V = 5V, V = 1.5V to 3.5V
85
60
70
2.5
120
74
dB
dB
dB
V
S
CM
V = 2.5V to 10V, V = 0V
S
CM
PSRR Match (Channel-to-Channel) (Note 6)
Minimum Supply Voltage (Note 7)
V = 2.5V to 10V, V = 0V
100
S
CM
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
5
85
240
185
50
mV
mV
mV
mV
OL
OH
I
= 5mA
190
460
350
SINK
V = 5V, I
= 20mA
= 15mA
S
SINK
SINK
V = 3V, I
S
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
25
90
325
75
mV
mV
mV
mV
I
= 5mA
210
600
410
SOURCE
V = 5V, I
= 20mA
= 15mA
S
SOURCE
SOURCE
V = 3V, I
S
225
I
I
Short-Circuit Current
V = 5V
V = 3V
S
±30
±25
±45
±40
mA
mA
SC
S
Supply Current per Amp
V = 5V
2.5
2.3
3.0
2.85
mA
mA
S
S
V = 3V
S
GBW
SR
Gain Bandwidth Product
Slew Rate
Frequency = 1MHz, V = 5V
90
24
2.5
85
MHz
V/µs
MHz
ns
S
V = 5V, A = –1, R = 1k, V = 4V
17
S
V
L
P-P
O
FPBW
Full Power Bandwidth (Note 10)
Settling Time
V = 5V, V
S
= 3V
1.8
OUT
t
0.1%, V = 5V, V
= 2V, A = –1, R = 1k
STEP V L
S
S
The ● denotes the specifications which apply over 0°C < TA < 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V;
VCM = VOUT = half supply, unless otherwise noted.
SYMBOL
V
PARAMETER
CONDITIONS
V = 5V, 0V, V = Half Supply
LT6203, LT6204, LT6202S8
LT6202 SOT-23
MIN
TYP
MAX
UNITS
Input Offset Voltage
OS
S
CM
●
●
0.2
0.2
0.7
0.9
mV
mV
V = 3V, 0V, V = Half Supply
LT6203, LT6204, LT6202S8
LT6202 SOT-23
S
CM
●
●
0.6
0.6
1.7
1.9
mV
mV
+
–
V = 5V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
●
●
0.7
0.7
2.5
2.7
mV
mV
+
–
V = 3V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
●
●
1.2
1.2
4.0
4.2
mV
mV
V
TC
Input Offset Voltage Drift (Note 9)
V
= Half Supply
= Half Supply
= V to V
●
3.0
9.0
µV/°C
OS
CM
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
●
●
0.15
0.5
0.9
2.3
mV
mV
CM
CM
–
+
620234fa
4
LT6202/LT6203/LT6204
The ● denotes the specifications which apply over 0°C < TA < 70°C
ELECTRICAL CHARACTERISTICS
temperature range. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
Input Bias Current
V
V
V
= Half Supply
●
●
●
–7.0
–1.3
1.3
–3.3
µA
µA
µA
B
CM
CM
CM
+
= V
2.5
–
= V
–8.8
–
+
∆I
B
I Shift
V
= V to V
●
●
4.7
0.1
11.3
0.6
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
I
Input Offset Current
V
V
V
= Half Supply
●
●
●
0.15
0.10
0.15
1
1
1.1
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
A
Large Signal Gain
V = 5V, V = 0.5V to 4.5V, R = 1k to V /2
●
●
●
35
6.0
15
60
12
36
V/mV
V/mV
V/mV
VOL
S
O
L
S
V = 5V, V = 1.5V to 3.5V, R = 100 to V /2
S
O
L
S
V = 3V, V = 0.5V to 2.5V, R = 1k to V /2
S
O
L
S
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
●
●
●
60
78
56
83
97
75
dB
dB
dB
S
CM
V = 5V, V = 1.5V to 3.5V
S
CM
–
+
V = 3V, V = V to V
S
CM
CMRR Match (Channel-to-Channel) (Note 6) V = 5V, V = 1.5V to 3.5V
●
●
●
●
83
60
70
3.0
100
70
dB
dB
dB
V
S
CM
Power Supply Rejection Ratio
V = 3V to 10V, V = 0V
S CM
PSRR Match (Channel-to-Channel) (Note 6) V = 3V to 10V, V = 0V
100
S
CM
Minimum Supply Voltage (Note 7)
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
●
●
●
5.0
95
60
200
365
mV
mV
mV
OL
OH
I
I
= 5mA
SINK
SINK
= 15mA
260
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
= 5mA
●
●
●
●
50
100
230
635
430
mV
mV
mV
mV
I
115
360
260
SOURCE
V = 5V, I
= 20mA
= 15mA
S
SOURCE
SOURCE
V = 3V, I
S
I
I
Short-Circuit Current
V = 5V
S
●
●
±20
±20
±33
±30
mA
mA
SC
S
V = 3V
Supply Current per Amp
V = 5V
●
●
3.1
2.75
3.85
3.50
mA
mA
S
S
V = 3V
S
GBW
SR
Gain Bandwidth Product
Slew Rate
Frequency = 1MHz
●
●
●
87
21
MHz
V/µs
MHz
V = 5V, A = –1, R = 1k, V = 4V
15
S
V
L
O
FPBW
Full Power Bandwidth (Note 10)
V = 5V, V
= 3V
1.6
2.2
S
OUT
P-P
The ● denotes the specifications which apply over –40°C < TA < 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half
supply, unless otherwise noted. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
V = 5V, 0V, V = Half Supply
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
OS
S
CM
LT6203, LT6204, LT6202S8
LT6202 SOT-23
●
●
0.2
0.2
0.8
1.0
mV
mV
V = 3V, 0V, V = Half Supply
S
CM
LT6203, LT6204, LT6202S8
●
●
0.6
0.6
2.0
2.2
mV
mV
LT6202 SOT-23
+
–
V = 5V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
●
●
1.0
1.0
3.0
3.5
mV
mV
LT6202 SOT-23
+
–
V = 3V, 0V, V = V to V
S
CM
LT6203, LT6204, LT6202S8
●
●
1.4
1.4
4.5
4.7
mV
mV
LT6202 SOT-23
620234fa
5
LT6202/LT6203/LT6204
The ● denotes the specifications which apply over –40°C < TA < 85°C
ELECTRICAL CHARACTERISTICS
temperature range. VS = 5V, 0V; VS = 3V, 0V; VCM = VOUT = half supply, unless otherwise noted. (Note 5)
SYMBOL
TC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage Drift (Note 9)
V
= Half Supply
●
3.0
9.0
µV/°C
OS
CM
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
= Half Supply
= V to V
●
●
0.3
0.7
1.0
2.5
mV
mV
CM
CM
–
+
I
Input Bias Current
V
V
V
= Half Supply
●
●
●
–7.0
–8.8
–1.3
1.3
–3.3
µA
µA
µA
B
CM
CM
CM
+
= V
2.5
–
= V
–
+
∆I
B
I Shift
V
= V to V
●
●
4.7
0.1
11.3
0.6
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
I
Input Offset Current
V
V
V
= Half Supply
●
●
●
0.2
0.2
0.2
1
1.1
1.2
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
A
Large Signal Gain
V = 5V, V = 0.5V to 4.5V, R = 1k to V /2
●
●
●
32
4.0
13
60
10
32
V/mV
V/mV
V/mV
VOL
S
O
L
S
V = 5V, V = 1.5V to 3.5V, R = 100 to V /2
S
O
L
S
V = 3V, V = 0.5V to 2.5V, R = 1k to V /2
S
O
L
S
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
●
●
●
60
75
56
80
95
75
dB
dB
dB
S
CM
V = 5V, V = 1.5V to 3.5V
S
CM
–
+
V = 3V, V = V to V
S
CM
CMRR Match (Channel-to-Channel) (Note 6) V = 5V, V = 1.5V to 3.5V
●
●
●
●
80
60
70
3.0
100
70
dB
dB
dB
V
S
CM
Power Supply Rejection Ratio
V = 3V to 10V, V = 0V
S CM
PSRR Match (Channel-to-Channel) (Note 6) V = 3V to 10V, V = 0V
100
S
CM
Minimum Supply Voltage (Note 7)
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
●
●
●
6
95
210
70
210
400
mV
mV
mV
OL
OH
I
I
= 5mA
= 15mA
SINK
SINK
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
= 5mA
●
●
●
●
55
110
240
650
650
mV
mV
mV
mV
I
125
370
270
SOURCE
V = 5V, I
= 15mA
= 15mA
S
SOURCE
SOURCE
V = 3V, I
S
I
I
Short-Circuit Current
V = 5V
V = 3V
S
●
●
±15
±15
±25
±23
mA
mA
SC
S
Supply Current per Amp
V = 5V
●
●
3.3
3.0
4.1
3.65
mA
mA
S
S
V = 3V
S
GBW
SR
Gain Bandwidth Product
Slew Rate
Frequency = 1MHz
●
●
●
83
17
MHz
V/µs
MHz
V = 5V, A = –1, R = 1k, V = 4V
12
S
V
L
O
FPBW
Full Power Bandwidth (Note 10)
V = 5V, V
S
= 3V
1.3
1.8
OUT
P-P
620234fa
6
LT6202/LT6203/LT6204
TA = 25°C, VS = ±5V; VCM = VOUT = 0V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
LT6203, LT6204, LT6202S8
OS
V
V
V
= 0V
1.0
2.6
2.3
2.5
5.5
5.0
mV
mV
mV
CM
CM
CM
+
–
= V
= V
LT6202 SOT-23
V
V
V
= 0V
1.0
2.6
2.3
2.7
6.0
5.5
mV
mV
mV
CM
CM
CM
+
–
= V
= V
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
= 0V
0.2
0.4
1.0
2.0
mV
mV
CM
CM
–
+
= V to V
I
Input Bias Current
V
V
V
= Half Supply
–7.0
–9.5
–1.3
1.3
–3.8
µA
µA
µA
B
CM
CM
CM
+
= V
3.0
–
= V
–
+
∆I
B
I Shift
V
= V to V
5.3
0.1
12.5
0.6
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
I
Input Offset Current
V
V
V
= Half Supply
0.15
0.2
0.35
1
1.2
1.3
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
Input Noise Voltage
0.1Hz to 10Hz
800
nV
P-P
e
Input Noise Voltage Density
f = 100kHz
f = 10kHz
1.9
2.8
nV/√Hz
nV/√Hz
n
4.5
i
Input Noise Current Density, Balanced
Input Noise Current Density, Unbalanced
f = 10kHz
0.75
1.1
pA/√Hz
pA/√Hz
n
Input Resistance
Common Mode
Differential Mode
4
12
MΩ
kΩ
C
A
Input Capacitance
Common Mode
1.8
1.5
pF
pF
IN
Differential Mode
Large Signal Gain
V = ±4.5V, R = 1k
75
11
130
19
V/mV
V/mV
VOL
O
L
V = ±2.5V, R = 100
O
L
+
–
CMRR
PSRR
Common Mode Rejection Ratio
V
V
= V to V
65
85
85
98
dB
dB
CM
CM
= –2V to 2V
CMRR Match (Channel-to-Channel) (Note 6)
Power Supply Rejection Ratio
V
= –2V to 2V
85
60
70
120
74
dB
dB
dB
CM
V = ±1.25V to ±5V
S
PSRR Match (Channel-to-Channel) (Note 6)
V = ±1.25V to ±5V
S
100
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
5
50
190
460
mV
mV
mV
OL
OH
I
I
= 5mA
87
SINK
SINK
= 20mA
245
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
40
95
320
95
210
600
mV
mV
mV
I
I
= 5mA
SOURCE
SOURCE
= 20mA
I
I
Short-Circuit Current
Supply Current per Amp
Gain Bandwidth Product
Slew Rate
±30
±40
2.8
mA
mA
SC
3.5
S
GBW
SR
Frequency = 1MHz
70
18
100
25
MHz
V/µs
MHz
ns
A = –1, R = 1k, V = 4V
V
L
P-P
O
FPBW
Full Power Bandwidth (Note 10)
Settling Time
V
= 3V
1.9
2.6
OUT
t
0.1%, V
= 2V, A = –1, R = 1k
78
S
STEP
V
L
dG
dP
Differential Gain (Note 11)
Differential Phase (Note 11)
A = 2, R = R = 499Ω, R = 2k
0.05
0.03
%
V
F
G
L
A = 2, R = R = 499Ω, R = 2k
DEG
V
F
G
L
620234fa
7
LT6202/LT6203/LT6204
The ● denotes the specifications which apply over 0°C < TA < 70°C
ELECTRICAL CHARACTERISTICS
temperature range. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
LT6203, LT6204, LT6202S8
OS
V
V
V
= 0V
●
●
●
1.6
3.2
2.8
2.8
6.8
5.8
mV
mV
mV
CM
CM
CM
+
–
= V
= V
LT6202 SOT-23
V
V
V
= 0V
●
●
●
1.6
3.2
2.8
3.0
7.3
6.3
mV
mV
mV
CM
CM
CM
+
–
= V
= V
V
TC
Input Offset Voltage Drift (Note 9)
V
= Half Supply
●
7.5
24
µV/°C
OS
CM
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
= 0V
●
●
0.2
0.5
1.0
2.2
mV
mV
CM
CM
–
+
= V to V
I
Input Bias Current
V
V
V
= Half Supply
●
●
●
–7.0
–10
–1.4
1.8
–4.3
µA
µA
µA
B
CM
CM
CM
+
= V
3.6
–
= V
–
+
∆I
B
I Shift
V
= V to V
●
●
5.4
13
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
0.15
0.7
I
Input Offset Current
V
V
V
= Half Supply
●
●
●
0.1
0.2
0.4
1
1.2
1.4
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
A
Large Signal Gain
V = ±4.5V, R = 1k
●
●
70
10
120
18
V/mV
V/mV
VOL
O
L
V = ±2V, R = 100
O
L
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V
V
= V to V
●
●
65
83
84
95
dB
dB
CM
CM
= –2V to 2V
CMRR Match (Channel-to-Channel) (Note 6)
Power Supply Rejection Ratio
V
= –2V to 2V
●
●
●
83
60
70
110
70
dB
dB
dB
CM
V = ±1.5V to ±5V
S
PSRR Match (Channel-to-Channel) (Note 6)
V = ±1.5V to ±5V
100
S
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
●
●
●
6
70
mV
mV
mV
OL
OH
I
I
= 5mA
95
200
400
SINK
SINK
= 15mA
210
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
●
●
●
65
125
350
120
240
625
mV
mV
mV
I
I
= 5mA
SOURCE
SOURCE
= 20mA
I
I
Short-Circuit Current
Supply Current per Amp
Gain Bandwidth Product
Slew Rate
●
●
●
●
●
±25
±34
3.5
95
mA
mA
SC
4.3
S
GBW
SR
Frequency = 1MHz
MHz
V/µs
MHz
A = –1, R = 1k, V = 4V
16
22
V
L
O
FPBW
Full Power Bandwidth (Note 10)
V
= 3V
1.7
2.3
OUT
P-P
The ● denotes the specifications which apply over –40°C < TA < 85°C temperature range. VS = ±5V; VCM = VOUT = 0V, unless otherwise
noted. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage
LT6203, LT6204, LT6202S8
OS
V
V
V
= 0V
●
●
●
1.7
3.8
3.5
3.0
7.5
6.6
mV
mV
mV
CM
CM
CM
+
–
= V
= V
LT6202 SOT-23
V
V
V
= 0V
●
●
●
1.7
3.8
3.5
3.2
7.7
6.7
mV
mV
mV
CM
CM
CM
+
–
= V
= V
620234fa
8
LT6202/LT6203/LT6204
The ● denotes the specifications which apply over –40°C < TA < 85°C
ELECTRICAL CHARACTERISTICS
temperature range. VS = ±5V; VCM = VOUT = 0V, unless otherwise noted. (Note 5)
SYMBOL
TC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Input Offset Voltage Drift (Note 9)
V
= Half Supply
●
7.5
24
µV/°C
OS
CM
Input Offset Voltage Match
(Channel-to-Channel) (Note 6)
V
V
= 0V
●
●
0.3
0.6
1.0
2.5
mV
mV
CM
CM
–
+
= V to V
I
Input Bias Current
V
V
V
= Half Supply
●
●
●
–7.0
–10
–1.4
1.8
–4.5
µA
µA
µA
B
CM
CM
CM
+
= V
3.6
–
= V
–
+
∆I
B
I Shift
V
= V to V
●
●
5.4
13
µA
µA
B
CM
I Match (Channel-to-Channel) (Note 6)
B
0.15
0.7
I
Input Offset Current
V
V
V
= Half Supply
●
●
●
0.15
0.3
0.5
1
1.2
1.6
µA
µA
µA
OS
CM
CM
CM
+
= V
–
= V
A
Large Signal Gain
V = ±4.5V, R = 1k
●
●
60
110
13
V/mV
V/mV
VOL
O
L
V = ±1.5V R = 100
6.0
O
L
+
–
CMRR
PSRR
Common Mode Rejection Ratio
V
V
= V to V
●
●
65
80
84
95
dB
dB
CM
CM
= –2V to 2V
CMRR Match (Channel-to-Channel) (Note 6)
Power Supply Rejection Ratio
V
= –2V to 2V
●
●
●
80
60
70
110
70
dB
dB
dB
CM
V = ±1.5V to ±5V
S
PSRR Match (Channel-to-Channel) (Note 6)
V = ±1.5V to ±5V
S
100
V
V
Output Voltage Swing LOW Saturation
(Note 8)
No Load
●
●
●
7
75
mV
mV
mV
OL
OH
I
I
= 5mA
98
205
500
SINK
SINK
= 15mA
260
Output Voltage Swing HIGH Saturation
(Note 8)
No Load
●
●
●
70
130
360
130
250
640
mV
mV
mV
I
I
= 5mA
SOURCE
SOURCE
= 15mA
I
I
Short-Circuit Current
Supply Current per Amp
Gain Bandwidth Product
Slew Rate
●
●
●
●
●
±15
±25
3.8
90
mA
mA
SC
4.5
S
GBW
SR
Frequency = 1MHz
MHz
V/µs
MHz
A = –1, R = 1k, V = 4V
13
18
V
L
O
FPBW
Full Power Bandwidth (Note 10)
V
= 3V
1.4
1.9
OUT
P-P
Note 1: Absolute maximum ratings are those values beyond which the life
of the device may be impaired.
Note 6: Matching parameters are the difference between the two amplifiers
A and D and between B and C of the LT6204; between the two amplifiers
of the LT6203. CMRR and PSRR match are defined as follows: CMRR and
PSRR are measured in µV/V on the identical amplifiers. The difference is
calculated between the matching sides in µV/V. The result is converted to
dB.
Note 2: Inputs are protected by back-to-back diodes and diodes to each
supply. If the inputs are taken beyond the supplies or the differential input
voltage exceeds 0.7V, the input current must be limited to less than 40mA.
Note 3: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefinitely.
Note 7: Minimum supply voltage is guaranteed by power supply rejection
ratio test.
Note 8: Output voltage swings are measured between the output and
power supply rails.
Note 4: The LT6202C/LT6202I, LT6203C/LT6203I and LT6204C/LT6204I
are guaranteed functional over the temperature range of –40°C and 85°C.
Note 9: This parameter is not 100% tested.
Note 10: Full-power bandwidth is calculated from the slew rate:
Note 5: The LT6202C/LT6203C/LT6204C are guaranteed to meet specified
performance from 0°C to 70°C. The LT6202C/LT6203C/LT6204C are
designed, characterized and expected to meet specified performance from
–40°C to 85°C, but are not tested or QA sampled at these temperatures.
The LT6202I/LT6203I/LT6204I are guaranteed to meet specified
performance from –40°C to 85°C.
FPBW = SR/2πV
P
Note 11: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video
Measurement Set. The resolution of this equipment is 0.1% and 0.1°. Ten
identical amplifier stages were cascaded giving an effective resolution of
0.01% and 0.01°.
620234fa
9
LT6202/LT6203/LT6204
U W
TYPICAL PERFOR A CE CHARACTERISTICS
VOS Distribution, VCM = V+/2
VOS Distribution, VCM = V+
VOS Distribution, VCM = V–
45
40
35
30
25
20
15
10
5
60
50
60
50
40
30
20
10
0
V
= 5V, 0V
V
= 5V, 0V
V
= 5V, 0V
S
S
S
S8
S8
S8
40
30
20
10
0
0
–250
200 400
600 800
–150
–50
0
250
–800 –600 –400 –200
0
50
150
–800–600–400–200
0
200 400 600 800 1000
INPUT OFFSET VOLTAGE (µV)
INPUT OFFSET VOLTAGE (µV)
INPUT OFFSET VOLTAGE (µV)
LT6202/03/04 G01
LT6202/03/04 G03
LT6202/03/04 G02
Supply Current vs Supply Voltage
(Both Amplifiers)
Offset Voltage vs Input
Common Mode Voltage
Input Bias Current vs
Common Mode Voltage
12
2.0
1.5
1.0
0.5
2
0
V
= 5V, 0V
S
T
= 125°C
10
8
A
T
= 125°C
A
–2
–4
6
T
T
= 25°C
T
= –55°C
A
A
A
T
A
= 25°C
4
0
–0.5
–1.0
= –55°C
T
= 25°C
A
T
= –55°C
2
A
V
= 5V, 0V
S
T
= 125°C
A
TYPICAL PART
–6
0
8
12
14
3
5
6
–1
0
1
2
3
4
5
6
0
2
4
6
10
–1
0
1
2
4
COMMON MODE VOLTAGE (V)
TOTAL SUPPLY VOLTAGE (V)
INPUT COMMON MODE VOLTAGE (V)
LT6202/03/04 G04
LT6202/03/04 G05
LT6202/03/04 G06
Output Saturation Voltage vs
Load Current (Output Low)
Output Saturation Voltage vs
Load Current (Output High)
Input Bias Current vs Temperature
4
3
2
1
0
10
1
10
V
S
= 5V, 0V
V
S
= 5V, 0V
V
S
= 5V, 0V
V
CM
= 5V
1
T
= 125°C
A
T
= 125°C
T
= 25°C
A
A
T
A
= 25°C
0.1
0.1
–1
–2
–3
–4
–5
–6
V
= 0V
CM
0.01
0.01
T
= –55°C
A
T
A
= –55°C
0.001
0.001
–50 –35 –20 –5 10 25 40 55 70 85
0.01
0.1
1
10
100
0.01
0.1
1
10
100
LOAD CURRENT (mA)
LOAD CURRENT (mA)
TEMPERATURE (°C)
LT6202/03/04 G08
LT6202/03/04 G09
LT6202/03/04 G07
620234fa
10
LT6202/LT6203/LT6204
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Output Short-Circuit Current vs
Power Supply Voltage
Open-Loop Gain
Minimum Supply Voltage
10
8
80
2.5
V
S
T
A
= 3V, 0V
= 25°C
SOURCING
2.0
1.5
T
= 125°C
A
60
40
6
4
1.0
T
= 25°C
A
T
= 125°C
A
20
0
2
0.5
T
= –55°C
A
R
= 1k
L
T
= 25°C
A
0
0
SINKING
–2
–4
–6
–8
–10
–0.5
–1.0
–1.5
–2.0
–2.5
T
A
= –55°C
–20
–40
–60
R
= 100Ω
L
T
= 25°C
T
= –55°C
A
A
T
A
= 125°C
–80
2
2.5
3.5
4
4.5
5
0
0.5
1.5
2.0
2.5
3.0
1.5
3
1
1.5
2
2.5
3
3.5
4
4.5
5
1.0
TOTAL SUPPLY VOLTAGE (V)
OUTPUT VOLTAGE (V)
POWER SUPPLY VOLTAGE (±V)
LT6202/03/04 G10
LT6202/03/04 G11
LT6202/03/04 G12
Offset Voltage vs Output Current
Open-Loop Gain
Open-Loop Gain
2.5
2.5
2.0
15
V
T
= 5V, 0V
= 25°C
S
V = ±5V
S
V = ±5V
S
2.0
1.5
A
T
= 25°C
A
10
5
1.5
T
A
= 125°C
1.0
1.0
0.5
0.5
R
L
= 1k
R
= 1k
L
0
0
0
–0.5
–1.0
–1.5
–2.0
–2.5
–0.5
–1.0
–1.5
–2.0
–2.5
T
= 25°C
R
= 100Ω
A
R
= 100Ω
L
L
–5
–10
–15
T
= –55°C
A
0
1
2
3
4
5
20 40
OUTPUT CURRENT (mA)
–5 –4 –3 –2 –1
0
1
2
3
4
5
–80 –60 –40 –20
0
60 80
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
LT6202/03/04 G13
LT6202/03/04 G14
LT6202/03/04 G15
Warm-Up Drift vs Time
(LT6203S8)
Total Noise vs
Total Source Resistance
Input NoiseVoltage vs Frequency
100
10
1
45
40
35
30
25
20
15
10
5
160
140
120
100
80
V = 5V, 0V
S
T
= 25°C
V
V
= ±2.5V
CM
f = 100kHz
A
S
TOTAL SPOT NOISE
= 0V
T
= 25°C
A
V
= ±5V
NPN ACTIVE
= 4.5V
S
V
CM
PNP ACTIVE
= 0.5V
V
CM
60
AMPLIFIER SPOT
NOISE VOLTAGE
V
= ±2.5V
S
40
RESISTOR
SPOT
NOISE
V
S
= ±1.5V
20
BOTH ACTIVE
= 2.5V
V
CM
0
0.1
0
80 100
120 140 160
0
20 40 60
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
10k
100k
TIME AFTER POWER-UP (s)
TOTAL SOURCE RESISTANCE (Ω)
LT6202/03/04 G17
LT6202/03/04 G16
LT6202/03/04 G18
620234fa
11
LT6202/LT6203/LT6204
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Balanced Noise Current vs
Frequency
Unbalanced Noise Current vs
Frequency
0.1Hz to 10Hz Output
Voltage Noise
7
6
5
4
3
2
1
0
12
1200
1000
800
UNBALANCED SOURCE
RESISTANCE
BALANCED SOURCE
RESISTANCE
V
V
= 5V, 0V
S
= V /2
CM
S
10
8
V
= 5V, 0V
= 25°C
V
= 5V, 0V
= 25°C
S
A
S
A
T
T
PNP ACTIVE
= 0.5V
PNP ACTIVE
= 0.5V
V
400
CM
V
CM
0
6
4
BOTH ACTIVE
= 2.5V
BOTH ACTIVE
= 2.5V
–400
–800
–1000
– 1200
V
NPN ACTIVE
= 4.5V
CM
V
NPN ACTIVE
= 4.5V
CM
V
CM
V
CM
2
0
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
FREQUENCY (Hz)
10k
100k
TIME (2s/DIV)
LT6202/03/04 G20
LT6202/03/04 G19
LT6202/03/04 G19.1
Gain Bandwidth and Phase
Margin vs Temperature
Open-Loop Gain vs Frequency
Open-Loop Gain vs Frequency
90
80
70
60
80
80
70
60
50
40
30
20
10
0
120
100
80
120
100
80
PHASE
70
60
50
40
30
20
10
0
PHASE
V
= ±5V
S
V
= ±5V
S
V
= 0.5V
CM
PHASE MARGIN
= 3V, 0V
V
= 3V, 0V
60
60
S
V
= 4.5V
GAIN
CM
V
S
40
40
20
20
120
100
80
V
= ±5V
S
GAIN
V
S
= ±5V
0
0
V
= 0.5V
CM
V
= 4.5V
CM
–20
–40
–60
–80
–20
–40
–60
–80
V
S
= 3V, 0V
V
= 3V, 0V
S
GAIN BANDWIDTH
C
= 5pF
= 1k
L
L
V
C
= 5V, 0V
= 5pF
= 1k
S
L
L
R
60
–10
–10
–20
V
= 0V
CM
R
40
–20
100k
–55 –25
0
25
125
50
75 100
1M
10M
FREQUENCY (Hz)
100M
1G
100k
1M
10M
FREQUENCY (Hz)
100M
1G
TEMPERATURE (°C)
LT6202/03/04 G22
LT6202/03/04 G23
LT6202/03/04 G21
Gain Bandwidth and Phase Margin
vs Supply Voltage
Slew Rate vs Temperature
Output Impedance vs Frequency
1000
100
10
90
70
60
V
S
= 5V, 0V
A
= –1
G
= 1k
T
R
C
= 25°C
= 1k
= 5pF
V
F
L
A
L
L
R = R = 1k
80
70
60
50
RISING
R
PHASE MARGIN
V
S
= ±2.5V
50
40
30
20
10
A
V
= 10
A
V
= 2
V
S
= ±5V
120
100
80
GAIN BANDWIDTH
1
FALLING
75
A
V
= 1
V
= ±2.5V
V
= ±5V
0.1
S
S
60
0.01
40
0
100k
1M
10M
100M
2
4
8
10
12
14
50
100 125
0
6
–55 –25
0
25
FREQUENCY (Hz)
TOTAL SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
LT6202/03/04 G26
LT6202/03/04 G24
LT6202/03/04 G25
620234fa
12
LT6202/LT6203/LT6204
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Common Mode Rejection Ratio
vs Frequency
Power Supply Rejection Ratio
vs Frequency
Channel Separation vs Frequency
80
70
60
50
40
30
20
10
0
120
100
80
60
40
20
0
–40
–50
V
V
= 5V, 0V
= V /2
V
T
= 5V, 0V
= 25°C
= V /2
S
CM
T
A
V
= 25°C
= 1
= ±5V
S
A
CM
A
V
S
S
V
S
–60
–70
POSITIVE
SUPPLY
–80
–90
NEGATIVE
SUPPLY
–100
–110
–120
1k
10k
100k
1M
10M
100M
10k
100k
1M
10M
100M
1G
0.1
1
10
100
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (MHz)
LT6202/03/04 G28
LT6202/03/04 G27
LT6202/03/04 G27.1
Series Output Resistor vs
Capacitive Load
Series Output Resistor vs
Capacitive Load
Settling Time vs Output Step
(Noninverting)
200
150
100
50
40
35
30
25
20
15
10
5
40
35
30
25
20
15
10
5
V
A
= ±5V
= 1
V
A
= 5V, 0V
= 2
S
V
A
V
A
= 5V, 0V
= 1
S
V
S
V
R
= 10Ω
= 20Ω
–
+
S
T
= 25°C
V
OUT
V
500Ω
IN
R
= 10Ω
S
R
S
1mV
1mV
R
= 20Ω
S
R
S
R
L
= 50Ω
= 50Ω
R
R
= 50Ω
= 50Ω
S
10mV
L
10mV
3
0
0
0
–4 –3 –2 –1
0
1
2
4
10
100
1000
10
100
CAPACITIVE LOAD (pF)
1000
OUTPUT STEP (V)
CAPACITIVE LOAD (pF)
LT6202/03/04 G31
LT6202/03/04 G29
LT6202/03/04 G30
Settling Time vs Output Step
(Inverting)
Maximum Undistorted Output
Signal vs Frequency
Distortion vs Frequency
–40
–50
–60
–70
–80
–90
–100
200
150
100
50
10
A
= 2
A
V
V
= 1
V
A
T
= ±5V
= –1
V
V
500Ω
V
S
S
V
A
= ±2.5V
= 2V
9
8
7
6
5
4
3
2
500Ω
–
+
= 25°C
A
= –1
OUT
(P-P)
V
IN
V
OUT
R
= 100Ω, 3RD
= 100Ω, 2ND
L
R
L
1mV
1mV
10mV
V
T
= ±5V
= 25°C
HD , HD < –40dBc
2
R
= 1k, 3RD
L
S
A
10mV
3
R
= 1k, 2ND
L
3
0
–4 –3 –2 –1
0
1
2
4
10k
100k
FREQUENCY (Hz)
1M
10M
10k
100k
FREQUENCY (Hz)
1M
10M
OUTPUT STEP (V)
LT6202/03/04 G33
LT6202/03/04 G32
LT6202/03/04 G34
620234fa
13
LT6202/LT6203/LT6204
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Distortion vs Frequency
Distortion vs Frequency
Distortion vs Frequency
–30
–40
–50
–60
–70
–80
–90
–100
–40
–50
–60
–70
–80
–90
–100
–40
–50
–60
–70
–80
–90
–100
A
V
V
= 2
A
V
V
= 1
A
V
V
= 2
V
S
V
S
V
S
R
= 100Ω, 3RD
L
= ±2.5V
= 2V
= ±5V
= 2V
= ±5V
= 2V
(P-P)
OUT
(P-P)
OUT
(P-P)
OUT
R
= 100Ω, 3RD
L
R = 100Ω, 2ND
L
R
L
= 100Ω, 2ND
R
L
= 100Ω, 3RD
L
R
= 100Ω, 2ND
R
L
= 1k, 3RD
R
= 1k, 2ND
L
R
L
= 1k, 2ND
R
L
= 1k, 3RD
R
= 1k, 3RD
L
R
= 1k, 2ND
L
10k
100k
1M
10M
10k
100k
1M
10M
10k
100k
1M
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
LT6202/03/04 G36
LT6202/03/04 G37
LT6202/03/04 G35
5V Large-Signal Response
5V Small-Signal Response
5V
0V
0V
200ns/DIV
200ns/DIV
LT6202/03/04 G38
LT6202/03/04 G39
V
A
= 5V, 0V
= 1
= 1k
V
A
= 5V, 0V
= 1
= 1k
S
V
L
S
V
L
R
R
Output-Overdrive Recovery
±5V Large-Signal Response
5V
0V
0V
0V
–5V
200ns/DIV
200ns/DIV
LT6202/03/04 G41
LT6202/03/04 G40
V
S
A
V
= 5V, 0V
= 2
V
A
= ±5V
= 1
= 1k
S
V
L
R
620234fa
14
LT6202/LT6203/LT6204
U
W U U
APPLICATIO S I FOR ATIO
Amplifier Characteristics
Inputbiascurrentnormallyflowsoutofthe+and–inputs.
The magnitude of this current increases when the input
common mode voltage is within 1.5V of the negative rail,
and only Q1/Q4 are active. The polarity of this current
reverses when the input common mode voltage is within
1.5V of the positive rail and only Q2/Q3 are active.
Figure 1 shows a simplified schematic of the LT6202/
LT6203/LT6204, which has two input differential amplifi-
ers in parallel that are biased on simultaneously when the
commonmodevoltageisatleast1.5Vfromeitherrail.This
topology allows the input stage to swing from the positive
supply voltage to the negative supply voltage. As the
commonmodevoltageswingsbeyondVCC–1.5V,current
source I1 saturates and current in Q1/Q4 is zero. Feedback
is maintained through the Q2/Q3 differential amplifier, but
with an input gm reduction of 1/2. A similar effect occurs
with I2 when the common mode voltage swings within
1.5V of the negative rail. The effect of the gm reduction is
a shift in the VOS as I1 or I2 saturate.
The second stage is a folded cascode and current mirror
that converts the input stage differential signals to a single
ended output. Capacitor C1 reduces the unity cross
frequency and improves the frequency stability without
degrading the gain bandwidth of the amplifier. The
differential drive generator supplies current to the output
transistors that swing from rail-to-rail.
+
V
+
–
R1
R2
V
I
1
BIAS
Q11
+V
–V
Q5
Q8
Q6
DESD1
DESD2
+V
Q2
Q3
+
C
C1
M
+V
Q9
Q1
Q4
D1
D2
DESD5
DIFFERENTIAL
DRIVE
GENERATOR
–
DESD3
DESD4
DESD6
Q7
–V +V
–V
Q10
R3
R4
R5
D3
I
2
–
V
6203/04 F01
Figure 1. Simplified Schematic
620234fa
15
LT6202/LT6203/LT6204
U
W
U U
APPLICATIO S I FOR ATIO
Input Protection
a diode drop of the input signal. In this photo, the input
signal generator is clipping at ±35mA, and the output
transistors supply this generator current through the
protection diodes.
There are back-to-back diodes, D1 and D2, across the
+ and – inputs of these amplifiers to limit the differential
input voltage to ±0.7V. The inputs of the LT6202/LT6203/
LT6304 do not have internal resistors in series with the With the amplifier connected in a gain of AV ≥ 2, the output
input transistors. This technique is often used to protect can invert with very heavy input overdrive. To avoid this
the input devices from over voltage that causes excessive inversion, limit the input overdrive to 0.5V beyond the
currents to flow. The addition of these resistors would power supply rails.
significantly degrade the low noise voltage of these ampli-
ESD
fiers. For instance, a 100Ω resistor in series with each
input would generate 1.8nV/√Hz of noise, and the total
amplifier noise voltage would rise from 1.9nV/√Hz to
2.6nV/√Hz. Once the input differential voltage exceeds
±0.7V, steady state current conducted though the protec-
tion diodes should be limited to ±40mA. This implies 25Ω
of protection resistance per volt of continuous overdrive
beyond ±0.7V. The input diodes are rugged enough to
handle transient currents due to amplifier slew rate over-
drive or momentary clipping without these resistors.
The LT6202/LT6203/LT6204 have reverse-biased ESD
protection diodes on all inputs and outputs as shown in
Figure 1. If these pins are forced beyond either supply,
unlimited current will flow through these diodes. If the
current is transient and limited to one hundred milliamps
or less, no damage to the device will occur.
Noise
ThenoisevoltageoftheLT6202/LT6203/LT6204isequiva-
lent to that of a 225Ω resistor, and for the lowest possible
noise it is desirable to keep the source and feedback
resistance at or below this value, i.e. RS + RG RFB ≤ 225Ω.
With RS + RG RFB = 225Ω the total noise of the amplifier
Figure 2 shows the input and output waveforms of the
amplifier driven into clipping while connected in a gain of
AV = 1. When the input signal goes sufficiently beyond the
power supply rails, the input transistors will saturate.
When saturation occurs, the amplifier loses a stage of
phase inversion and the output tries to change states.
Diodes D1 and D2 forward bias and hold the output within
||
||
is:en =√(1.9nV)2 +(1.9nV)2 =2.7nV.Belowthisresistance
value, the amplifier dominates the noise, but in the resis-
tance region between 225Ω and approximately 10kΩ, the
noise is dominated by the resistor thermal noise. As the
totalresistanceisfurtherincreased, beyond10k, thenoise
current multiplied by the total resistance eventually domi-
nates the noise.
The product of en •√ISUPPLY is an interesting way to gauge
low noise amplifiers. Many low noise amplifiers with low
en have high ISUPPLY current. In applications that require
low noise with the lowest possible supply current, this
productcanprovetobeenlightening.TheLT6202/LT6203/
LT6204 have an en, √ISUPPLY product of 3.2 per amplifier,
yet it is common to see amplifiers with similar noise
specificationshaveanen •√ISUPPLYproductof4.7to13.5.
OV
LT6202/03/04 F02
For a complete discussion of amplifier noise, see the
LT1028 data sheet.
Figure 2. VS = ±2.5V, AV = 1 with Large Overdrive
620234fa
16
LT6202/LT6203/LT6204
U
TYPICAL APPLICATIO S
Low Noise, Low Power 1MΩ AC
output therefore sit at a point slightly higher than one
pinchoff voltage below ground (typically about –0.6V).
When the photodiode is illuminated, the current must
come from the LT6202’s output through R1 and R2, as in
a normal TIA. Amplifier input noise density and gain-
bandwidth product were measured at 2.4nV/Hz and
100MHz, respectively. Note that because the JFET has a
highgm,approximately1/80Ω,itsattenuationlookinginto
R3 is only about 2%. Gain-bandwidth product was mea-
sured at 100MHz and the closed-loop bandwidth using a
3pF photodiode was approximately 1.4MHz.
Photodiode Transimpedance Amplifier
Figure 3 shows the LT6202 applied as a transimpedance
amplifier (TIA). The LT6202 forces the BF862 ultralow-
noise JFET source to 0V, with R3 ensuring that the JFET
has an IDRAIN of 1mA. The JFET acts as a source follower,
bufferingtheinputoftheLT6202andmakingitsuitablefor
the high impedance feedback elements R1 and R2. The
BF862hasaminimumIDSS of10mAandapinchoffvoltage
between –0.3V and –1.2V. The JFET gate and the LT6202
+
V
S
R1
499k
R2
499k
Precision Low Noise, Low Power, 1MΩ
Photodiode Transimpedance Amplifier
PHILIPS
BF862
Figure 4 shows the LT6202 applied as a transimpedance
amplifier (TIA), very similar to that shown in Figure 3. In
this case, however, the JFET is not allowed to dictate the
DC-bias conditions. Rather than being grounded, the
LT6202’s noninverting input is driven by the LTC2050 to
the exact state necessary for zero JFET gate voltage. The
noise performance is nearly identical to that of the circuit
in Figure 3, with the additional benefit of excellent DC
performance. Input offset was measured at under 200µV
and output noise was within 2mVP-P over a 20MHz
bandwidth.
C1
1pF
–
–
V
LT6202
V
BIAS
OUT
+
R3
4.99k
V
S
= ±5V
LT6202/03/04 F03
–
V
S
Figure 3. Low Noise, Low Power 1MΩ
AC Photodiode Transimpedance Amplifier
+
V
S
R1
499k
R2
499k
PHILIPS
BF862
C2
R4
C1
1pF
0.1µF
10M
–
–
V
BIAS
–
R5
10k
LT6202
V
OUT
+
LTC2050HV
+
C3
1µF
R3
4.99k
V
S
= ±5V
–
LT6202/03/04 F04
V
S
Figure 4. Precision Low Noise, Low Power Transimpedance Amplifier
620234fa
17
LT6202/LT6203/LT6204
U
TYPICAL APPLICATIO S
Single-Supply 16-Bit ADC Driver
AlthoughtheLTC1864hasasampleratefarbelowthegain
bandwidth of the LT6203, using this amplifier is not
necessarily a case of overkill. The designer is reminded
thatA/Dconvertershavesampleaperturesthatarevanish-
ingly small (ideally, infinitesimally small) and make de-
mands on the upstream circuitry far in excess of what is
implied by the innocent-looking sample rate. In addition,
when an A/D converter takes a sample, it applies a small
capacitor to its inputs with a fair amount of glitch energy
and expects the voltage on the capacitor to settle to the
true value very quickly. Finally, the LTC1864 has a 20MHz
analoginputbandwidthandcanbeusedinundersampling
applications, again requiring a source bandwidth higher
than Nyquist.
Figure 5 shows the LT6203 driving an LTC1864 unipolar
16-bit A/D converter. The bottom half of the LT6203 is in
a gain-of-one configuration and buffers the 0V negative
full-scale signal VLOW into the negative input of the
LTC1864. The top half of the LT6203 is in a gain-of-ten
configuration referenced to the buffered voltage VLOW and
drives the positive input of the LTC1864. The input range
of the LTC1864 is 0V to 5V, but for best results the input
range of VIN should be from VLOW (about 0.4V) to about
0.82V. Figure 6 shows an FFT obtained with a 10.1318kHz
coherent input waveform, from 8192 samples with no
windowing or averaging. Spurious free dynamic range is
seen to be about 100dB.
5V
R3
100Ω
V
= 0.6V
IN
DC
AC
+
±200mV
1/2 LT6203
–
R1
1k
+
LTC1864
16-BIT
250ksps
SERIAL
DATA
OUT
C1
470pF
–
R2
110Ω
R4
100Ω
V
= 0.4V
DC
+
LOW
1/2 LT6203
–
LT6202/03/04 F05
Figure 5. Single-Supply 16-Bit ADC Driver
0
–10
–20
f
f
= 250ksps
IN
S
= 10.131836kHz
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
0
12.5 25 37.5 50 62.5 75 82.5 100 112.5 125
FREQUENCY (kHz)
LT6202/03/04 F06
Figure 6. FFT Showing 100dB SFDR
620234fa
18
LT6202/LT6203/LT6204
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115
0.38 ± 0.10
TYP
5
8
0.675 ±0.05
3.5 ±0.05
2.15 ±0.05 (2 SIDES)
1.65 ±0.05
3.00 ±0.10
(4 SIDES)
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
PACKAGE
OUTLINE
(DD8) DFN 0203
4
1
0.28 ± 0.05
0.75 ±0.05
0.200 REF
0.28 ± 0.05
0.50 BSC
0.50
BSC
2.38 ±0.05
(2 SIDES)
2.38 ±0.10
(2 SIDES)
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. ALL DIMENSIONS ARE IN MILLIMETERS
3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
4. EXPOSED PAD SHALL BE SOLDER PLATED
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.189 – .196*
(4.801 – 4.978)
.045 ±.005
.009
(0.229)
REF
16 15 14 13 12 11 10 9
.254 MIN
.150 – .165
.229 – .244
.150 – .157**
(5.817 – 6.198)
(3.810 – 3.988)
.0165 ±.0015
.0250 TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
7
8
.015 ± .004
(0.38 ± 0.10)
× 45°
.053 – .068
(1.351 – 1.727)
.004 – .0098
(0.102 – 0.249)
.007 – .0098
(0.178 – 0.249)
0° – 8° TYP
.016 – .050
(0.406 – 1.270)
.0250
(0.635)
BSC
.008 – .012
(0.203 – 0.305)
NOTE:
1. CONTROLLING DIMENSION: INCHES
INCHES
2. DIMENSIONS ARE IN
(MILLIMETERS)
GN16 (SSOP) 0502
3. DRAWING NOT TO SCALE
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
620234fa
19
LT6202/LT6203/LT6204
U
PACKAGE DESCRIPTIO
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
0.889 ± 0.127
(.035 ± .005)
5.23
(.206)
MIN
3.2 – 3.45
(.126 – .136)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.52
(.206)
REF
0.65
(.0256)
BSC
0.42 ± 0.04
(.0165 ± .0015)
TYP
8
7 6
5
RECOMMENDED SOLDER PAD LAYOUT
3.00 ± 0.102
(.118 ± .004)
NOTE 4
4.90 ± 0.15
(1.93 ± .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 ± 0.015
(.021 ± .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.077)
SEATING
PLANE
0.22 – 0.38
(.009 – .015)
TYP
0.13 ± 0.076
(.005 ± .003)
0.65
(.0256)
BSC
MSOP (MS8) 0802
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
620234fa
20
LT6202/LT6203/LT6204
U
PACKAGE DESCRIPTIO
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
.045 ±.005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
SO8 0303
620234fa
21
LT6202/LT6203/LT6204
U
PACKAGE DESCRIPTIO
S Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.337 – .344
.045 ±.005
(8.560 – 8.738)
.050 BSC
NOTE 3
13
12
11
10
8
14
N
9
N
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
1
2
3
N/2
N/2
7
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0° – 8° TYP
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
.016 – .050
(0.406 – 1.270)
S14 0502
NOTE:
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
1. DIMENSIONS IN
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
620234fa
22
LT6202/LT6203/LT6204
U
PACKAGE DESCRIPTIO
S5 Package
5-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1635)
0.62
MAX
0.95
REF
2.90 BSC
(NOTE 4)
1.22 REF
1.50 – 1.75
(NOTE 4)
2.80 BSC
1.4 MIN
3.85 MAX 2.62 REF
PIN ONE
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45 TYP
5 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
NOTE:
S5 TSOT-23 0302
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
620234fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
23
LT6202/LT6203/LT6204
U
TYPICAL APPLICATIO
Low Noise Differential Amplifier with Gain Adjust and Common Mode Control
+
V
OUT
C3
5pF
C1
270pF
R1
402Ω
0dB
6dB
C2
R2
22pF
R7, 402Ω
R10, 402Ω
200Ω
–
V
IN
+
V
R3
100Ω
–
R9
402Ω
12dB
0dB
–
R4
402Ω
1/2 LT6203
+
–
1/2 LT6203
+
V
OUT
R
A
+
R5
200Ω
V
+
V
6dB
R
IN
0.1µF
B
R6
100Ω
R8
402Ω
R
B
+
OUTPUT V
=
V
CM
(
)
R
+ R
B
A
12dB
LT6202/03/04 F07
Low Noise Differential Amplifier
Frequency Response
G = 0dB
G = 6dB
G = 12dB
1M
50k
5M
FREQUENCY (Hz)
LT6202/03/04 F08
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1028
Single, Ultralow Noise 50MHz Op Amp
Single, Low Noise Rail-to-Rail Amplifier
1.1nV/√Hz
LT1677
3V Operation, 2.5mA, 4.5nV/√Hz, 60µV Max V
0S
LT1722/LT1723/LT1724
LT1800/LT1801/LT1802
LT1806/LT1807
LT6200
Single/Dual/Quad Low Noise Precision Op Amps
70V/µs Slew Rate, 400µV Max V , 3.8nV/√Hz, 3.7mA
OS
Single/Dual/Quad Low Power 80MHz Rail-to-Rail Op Amps 8.5nV/√Hz, 2mA Max Supply
Single/Dual, Low Noise 325MHz Rail-to-Rail Amplifiers
Single Ultralow Noise Rail-to-Rail Amplifier
2.5V Operation, 550µV Max V , 3.5nV/√Hz
OS
0.95nV/√Hz, 165MHz Gain Bandwidth
620234fa
LT/TP 0403 1K • PRINTED IN USA
24 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2002
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