LT6010ACDD#TR [Linear]
LT6010 - 135µA, 14nV/rtHz, Rail-to-Rail Output Precision Op Amp with Shutdown; Package: DFN; Pins: 8; Temperature Range: 0°C to 70°C;
| 型号： | LT6010ACDD#TR |
| 厂家： | 
Linear |
| 描述： | LT6010 - 135µA, 14nV/rtHz, Rail-to-Rail Output Precision Op Amp with Shutdown; Package: DFN; Pins: 8; Temperature Range: 0°C to 70°C 放大器 |
| 文件： | 总16页 (文件大小：311K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT6010
135µA, 14nV/√Hz,
Rail-to-Rail Output Precision
Op Amp with Shutdown
U
FEATURES
DESCRIPTIO
■
35µV Maximum Offset Voltage
The LT®6010 op amp combines low noise and high preci-
sion input performance with low power consumption and
rail-to-rail output swing.
■
110pA Maximum Input Bias Current
■
135µA Supply Current
Rail-to-Rail Output Swing
12µA Supply Current in Shutdown
120dB Minimum Voltage Gain (VS = ±15V)
0.8µV/°C Maximum VOS Drift
14nV/√Hz Input Noise Voltage
2.7V to ±18V Supply Voltage Operation
Operating Temperature Range: –40°C to 85°C
Space Saving 3mm × 3mm DFN Package
■
Input offset voltage is trimmed to less than 35µV. The low
drift and excellent long-term stability guarantee a high
accuracy over temperature and over time. The 110pA
maximum input bias current and 120dB minimum voltage
gain further maintain this precision over operating
conditions.
■
■
■
■
■
■
■
TheLT6010worksonanypowersupplyvoltagefrom2.7V
to 36V, and draws only 135µA of supply current on a 5V
supply. A power saving shutdown feature reduces supply
current to 12µA. The output voltage swings to within
40mV of either supply rail, making the amplifier a good
choice for low voltage single supply operation.
U
APPLICATIO S
■
Thermocouple Amplifiers
■
Precision Photo Diode Amplifiers
■
Instrumentation Amplifiers
TheLT6010isfullyspecifiedat5Vand±15Vsuppliesand
from –40°C to 85°C. The device is available in SO-8 and
space-saving 3mm × 3mm DFN packages. This op amp
is also available in dual (LT6011) and quad (LT6012)
■
Battery-Powered Precision Systems
packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
Single Supply Current Source for Platinum RTD
Distribution of Offset Voltage Drift
R5
1k, 5%
20
V
S
= ±2.5V
SO-8 PACKAGES
18
16
14
12
10
8
+
V
= 100mV AT 0°C + 385µV/°C
–50°C TO 600°C
OUT
1k
AT 0°C
RTD*
–
C1
V
S
0.1µF
R4
1k, 5%
–
2
7
6
6
R1
12.4k
0.1%
3 +LT6010
4
4
R2
100Ω
1%
2
6
4
0
V
LT1790-1.25
S
–0.8 –0.6 –0.4 –0.2
0
0.2 0.4 0.6 0.8
1µF
1
2
V
CC
= 2.7V TO 20V
≈ 320µA
S
DISTRIBUTION (µV/°C)
I
6010 TA01b
*OMEGA F3141 1kΩ, 0.1% PLATINUM RTD
(800) 826-6342
6010 TA01a
sn6010 6010fs
1
LT6010
W W
U W
ABSOLUTE AXI U RATI GS (Note 1)
Total Supply Voltage (V+ to V–) .............................. 40V
Differential Input Voltage (Note 2) .......................... 10V
Input Voltage, Shutdown Voltage ..................... V+ to V–
Input Current (Note 2) ....................................... ±10mA
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
Maximum Junction Temperature
DD Package ..................................................... 125°C
SO-8 Package .................................................. 150°C
Storage Temperature Range
DD Package ..................................... –65°C to 125°C
SO-8 Package .................................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
U W
U
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
ORDER PART
TOP VIEW
TOP VIEW
NUMBER
NULL
–IN
1
2
3
4
8
7
6
5
NULL
NULL
–IN
1
2
3
4
8
7
6
5
NULL
LT6010CDD
LT6010IDD
LT6010ACDD
LT6010AIDD
LT6010CS8
LT6010IS8
LT6010ACS8
LT6010AIS8
+
V
+
–
+
V
–
+
+IN
OUT
+IN
OUT
–
–
V
SHDN
V
SHDN
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 190°C/W
S8 PART MARKING
DD PART MARKING*
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
6010
LADU
TJMAX = 125°C, θJA = 160°C/W
UNDERSIDE METAL INTERNALLY CONNECTED TO V–
(PCB CONNECTION OPTIONAL)
6010I
6010A
6010AI
*Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; SHDN = 0.2V, unless otherwise
specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage (Note 7)
LT6010AS8
10
35
60
75
µV
µV
µV
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
20
20
30
55
85
110
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
60
85
100
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
LT6010DD
T = 0°C to 70°C
80
110
135
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
∆V /∆T
Input Offset Voltage Drift (Note 6)
LT6010AS8, LT6010S8
LT6010ADD,LT6010DD
●
●
0.2
0.2
0.8
1.3
µV/°C
µV/°C
OS
sn6010 6010fs
2
LT6010
ELECTRICAL CHARACTERISTICS
specified. (Note 5)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; SHDN = 0.2V, unless otherwise
SYMBOL
I
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Offset Current (Note 7)
LT6010AS8
20
110
150
200
pA
pA
pA
OS
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
40
20
40
20
40
20
40
200
300
400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
200
300
400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010DD
T = 0°C to 70°C
300
400
500
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
I
Input Bias Current (Note 7)
LT6010AS8
T = 0°C to 70°C
±110
±150
±200
pA
pA
pA
B
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
±200
±300
±400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
±200
±300
±400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010DD
T = 0°C to 70°C
±300
±400
±500
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
Input Noise Voltage
0.1Hz to 10Hz
400
14
nV
P-P
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
f = 1kHz
f = 1kHz
nV/√Hz
pA/√Hz
n
i
n
0.1
R
IN
Common Mode, V = 1V to 3.8V
Differential
10
120
20
GΩ
MΩ
CM
C
V
Input Capacitance
4
pF
IN
Input Voltage Range (Positive)
Input Voltage Range (Negative)
Guaranteed by CMRR
Guaranteed by CMRR
●
●
3.8
4
0.7
V
V
CM
1
CMRR
Common Mode Rejection Ratio
Minimum Supply Voltage
V
= 1V to 3.8V
●
●
●
107
135
2.4
dB
V
CM
Guaranteed by PSRR
2.7
PSRR
Power Supply Rejection Ratio
Large-Signal Voltage Gain
V = 2.7V to 36V, V = 1/2V
S
112
135
dB
S
CM
A
V
R = 10k, V = 1V to 4V
OUT
R = 2k, V
●
●
300
250
2000
2000
V/mV
V/mV
VOL
OUT
L
= 1V to 4V
L
OUT
Maximum Output Swing
No Load, 50mV Overdrive
35
120
40
55
65
mV
mV
+
(Positive, Referred to V )
●
●
●
●
I
= 1mA, 50mV Overdrive
170
220
mV
mV
SOURCE
Maximum Output Swing
(Negative, Referred to 0V)
No Load, 50mV Overdrive
= 1mA, 50mV Overdrive
55
65
mV
mV
I
150
225
275
mV
mV
SINK
sn6010 6010fs
3
LT6010
ELECTRICAL CHARACTERISTICS
specified. (Note 5)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, 0V; VCM = 2.5V; RL to 0V; SHDN = 0.2V, unless otherwise
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
Output Short-Circuit Current (Note 3)
V
= 0V, 1V Overdrive (Source)
10
4
14
mA
mA
SC
OUT
●
●
V
= 5V, –1V Overdrive (Sink)
10
4
21
mA
mA
OUT
SR
Slew Rate
A = –10, R = 50k, R = 5k
0.06
0.05
0.04
0.09
V/µs
V/µs
V/µs
V
F
G
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
GBW
Gain Bandwidth Product
f = 10kHz
250
225
330
kHz
kHz
●
t
Settling Time
A = –1, 0.01%, V = 1.5V to 3.5V
OUT
45
1
µs
µs
s
V
t , t
Rise Time, Fall Time
SHDN Pin Current
A = 1, 10% to 90%, 0.1V Step
r
f
V
–
I
SHDN ≤ V + 0.2V (On)
●
●
0.25
25
µA
µA
SHDN
–
SHDN = V + 2.0V (Off)
15
–
–
t
I
SHDN Turn-On, Turn-Off Time
Supply Current
SHDN = V (On) to V + 2.0V (Off)
25
25
µs
µs
SHDN
S
–
–
SHDN = V + 2.0V (Off) to V (On)
–
SHDN ≤ V + 0.2V (On)
135
150
190
210
µA
µA
µA
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
–
SHDN = V + 2.0V (Off)
12
25
50
µA
µA
●
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VS = ±15V, VCM = 0V, RL to 0V; SHDN = –14.8V, unless otherwise specified. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage (Note 7)
LT6010AS8
10
60
80
110
µV
µV
µV
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
20
20
30
85
120
160
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
85
105
135
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
LT6010DD
T = 0°C to 70°C
110
145
185
µV
µV
µV
●
●
A
T = –40°C to 85°C
A
∆V /∆T
Input Offset Voltage Drift (Note 6)
Input Offset Current (Note 7)
LT6010AS8, LT6010S8
LT6010ADD,LT6010DD
●
●
0.2
0.2
0.8
1.3
µV/°C
µV/°C
OS
I
LT6010AS8
20
40
20
110
150
200
pA
pA
pA
OS
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
200
300
400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
200
300
400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
sn6010 6010fs
4
LT6010
ELECTRICAL CHARACTERISTICS
specified. (Note 5)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V; SHDN = –14.8V, unless otherwise
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
I
Input Offset Current (Note 7)
LT6010DD
40
300
400
500
pA
pA
pA
OS
B
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Input Bias Current (Note 7)
LT6010AS8
T = 0°C to 70°C
20
40
20
40
±110
±150
±200
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010S8
T = 0°C to 70°C
±200
±300
±400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010ADD
T = 0°C to 70°C
±200
±300
±400
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
LT6010DD
T = 0°C to 70°C
±300
±400
±500
pA
pA
pA
●
●
A
T = –40°C to 85°C
A
Input Noise Voltage
0.1Hz to 10Hz
400
13
nV
P-P
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
f = 1kHz
f = 1kHz
nV/√Hz
pA/√Hz
n
i
0.1
n
R
IN
Common Mode, V = ±13.5V
Differential
50
400
20
GΩ
MΩ
CM
C
V
Input Capacitance
4
pF
V
IN
Input Voltage Range
Guaranteed by CMRR
●
±13.5
±14
135
CM
CMRR
Common Mode Rejection Ratio
V
= –13.5V to 13.5V
115
112
dB
dB
CM
●
●
●
Minimum Supply Voltage
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Guaranteed by PSRR
V = ±1.35V to ±18V
±1.2
135
±1.35
V
PSRR
112
dB
S
A
V
R = 10k, V = –13.5V to 13.5V
L OUT
1000
600
2000
V/mV
V/mV
VOL
OUT
●
●
●
●
●
●
●
●
R = 5k, V
L
= –13.5V to 13.5V
OUT
500
300
1500
45
V/mV
V/mV
Maximum Output Swing
(Positive, Referred to V )
No Load, 50mV Overdrive
= 1mA, 50mV Overdrive
80
100
mV
mV
+
I
140
45
195
240
mV
mV
SOURCE
Maximum Output Swing
(Negative, Referred to 0V)
No Load, 50mV Overdrive
80
100
mV
mV
I
= 1mA, 50mV Overdrive
= 0V, 1V Overdrive (Source)
= 0V, –1V Overdrive (Sink)
150
15
250
300
mV
mV
SINK
I
Output Short-Circuit Current (Note 3)
V
V
10
5
mA
mA
SC
OUT
OUT
10
5
20
mA
mA
sn6010 6010fs
5
LT6010
ELECTRICAL CHARACTERISTICS
specified. (Note 5)
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±15V, VCM = 0V, RL to 0V; SHDN = –14.8V, unless otherwise
SYMBOL
PARAMETER
CONDITIONS
A = –10, R = 50k, R = 5k
MIN
TYP
MAX
UNITS
SR
Slew Rate
0.08
0.07
0.05
0.11
V/µs
V/µs
V/µs
V
F
G
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
GBW
Gain Bandwidth Product
f = 10kHz
275
250
350
kHz
kHz
●
t
Settling Time
A = –1, 0.01%, V = 0V to 10V
OUT
85
1
µs
µs
s
V
t , t
Rise Time, Fall Time
SHDN Pin Current
A = 1, 10% to 90%, 0.1V Step
r
f
V
–
I
SHDN ≤ V + 0.2V (On)
●
●
0.25
25
µA
µA
SHDN
–
SHDN = V + 2.0V (Off)
15
–
–
–
t
I
SHDN Turn-On, Turn-Off Time
Supply Current
SHDN = V (On) to V + 2.0V (Off)
25
25
µs
µs
SHDN
S
–
SHDN = V + 2.0V (Off) to V (On)
–
SHDN ≤ V + 0.2V (On)
260
330
380
400
µA
µA
µA
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
–
SHDN = V + 2.0V (Off)
18
50
µA
Note 1: Absolute Maximum Ratings are those beyond which the life of the
from 0°C to 70°C and is designed, characterized and expected to meet
specified performance from –40°C to 85°C but is not tested or QA
sampled at these temperatures. The LT6010I is guaranteed to meet
specified performance from –40°C to 85°C.
device may be impaired.
Note 2: The inputs are protected by back–to–back diodes and internal
series resistors. If the differential input voltage exceeds 10V, the input
current must be limited to less than 10mA.
Note 6: This parameter is not 100% tested.
Note 3: A heat sink may be required to keep the junction temperature
Note 7: The specifications for V , I and I depend on the grade and on
the package. The following table clarifies the notations used in the
specification table:
OS
B
OS
below absolute maximum ratings.
Note 4: Both the LT6010C and LT6010I are guaranteed functional over the
operating temperature range of –40°C to 85°C.
Note 5: The LT6010C is guaranteed to meet the specified performance
Standard Grade
LT6010S8
A Grade
S8 Package
LT6010AS8
LT6010ADD
DFN Package
LT6010DD
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Offset Voltage
Offset Voltage
vs Input Common Mode Voltage
vs Temperature
Distribution of Input Offset Voltage
125
100
75
30
25
120
100
80
LT6010AS8
V
= 5V, 0V
= 25°C
V
S
= 5V, 0V
V = ±15V
S
TYPICAL PART
S
A
T
REPRESENTATIVE UNITS
50
20
T
= 85°C
A
25
60
T
= –40°C
= 25°C
0
A
15
10
40
–25
–50
–75
–100
–125
T
A
20
5
0
0
–20
–50
0
25
50
75 100 125
–25
–45 –35 –25 –15 –5
5
15 25 35 45
5
15
–15 –10
–5
0
10
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (µV)
INPUT COMMON MODE VOLTAGE (V)
6010 G02
6010 G01
6010 G03
sn6010 6010fs
6
LT6010
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current
Input Bias Current vs Temperature
vs Input Common Mode Voltage
en, in vs Frequency
1000
1000
900
100
V
= ±15V
= 25°C
S
A
V
= 5V, 0V
S
T
TYPICAL PART
800
T
= –40°C
A
700
600
500
400
300
200
100
0
CURRENT NOISE
100
100
T
= 25°C
A
T
= 85°C
A
+
VOLTAGE NOISE
100
I
B
–
I
B
10
–100
–100
1
10
1000
2V/DIV
–15
15
–50 –25
0
25
125
50
75 100
FREQUENCY (Hz)
TEMPERATURE (°C)
6010 G06
6010 G05
6010 G04
Total Input Noise
vs Source Resistance
0.1Hz to 10Hz Noise
0.01Hz to 1Hz Noise
10
1
V
T
= 5V, 0V
S
A
V
T
= ±15V
= 25°C
S
A
= 25°C
f = 1kHz
0.1
TOTAL NOISE
0.01
0.001
0.0001
RESISTOR NOISE ONLY
100
1k
10k 100k
1M
10M 100M
0
1
2
3
4
5
6
7
8
9
10
0
10 20 30 40 50 60 70 80 90 100
SOURCE RESISTANCE (Ω)
TIME (SEC)
TIME (SEC)
6010 G07
6010 G08
6010 G09
Output Saturation Voltage
vs Load Current (Output High)
Output Saturation Voltage
Output Voltage Swing
vs Temperature
vs Load Current (Output Low)
+
1
1
V
V
= 5V, 0V
V = 5V, 0V
S
S
V
= 5V, 0V
S
NO LOAD
–20
–40
T
= 85°C
T
= 85°C
A
A
OUTPUT HIGH
OUTPUT LOW
–60
T
= 25°C
A
T = 25°C
A
0.1
0.1
T
= –40°C
A
60
40
20
T
= –40°C
A
–
0.01
0.01
0.01
V
0.01
0.1
1
10
0.1
1
10
–25
0
50
75 100 125
–50
25
LOAD CURRENT (mA)
LOAD CURRENT (mA)
TEMPERATURE (°C)
6010 G11
6010 G12
6010 G10
sn6010 6010fs
7
LT6010
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Warm-Up Drift
THD + Noise vs Frequency
Supply Current vs Supply Voltage
3
2
1
0
10
1
500
450
400
350
300
250
200
150
100
50
V
V
= 5V, 0V
S
= 2V
OUT
P-P
T
= 25°C
A
A
A
= 1: R = 10k
= –1: R = R = 10k
V
V
L
±15V
F
G
T
= 85°C
A
0.1
T
= 25°C
A
0.01
0.001
0.0001
±2.5V
A
= –1
V
T
= –40°C
A
A
= 1
V
0
30
60
90
120
150
0
2
4
6
8
10 12 14 16 18 20
10
100
1k
FREQUENCY (Hz)
10k
100k
TIME AFTER POWER-ON (SECONDS)
SUPPLY VOLTAGE (±V)
6010 G15
6010 G14
6010 G13
THD + Noise vs Frequency
Settling Time vs Output Step
Settling Time vs Output Step
10
1
10
8
10
8
V
S
A
V
= ±15V
= 1
V
S
A
V
= ±15V
= –1
V
V
= ±15V
S
= 20V
IN P-P
= 25°C
T
A
6
6
0.1
0.1%
0.1%
0.01%
0.01%
A
V
= –1
0.01
0.001
0.0001
4
2
0
4
2
0
A
= 1
V
0
10 20 30 40 50 60 70 80 90
0
10 20 30 40 50 60 70 80 90
10
100
1k
10k
SETTLING TIME (µs)
SETTLING TIME (µs)
FREQUENCY (Hz)
6010 G16
6010 G17
6010 G18
PSRR vs Frequency
CMRR vs Frequency
160
140
120
100
80
140
120
100
80
T
= 25°C
V
= 5V, 0V
= 25°C
A
S
A
T
V
S
= ±15V
+PSRR
V
S
= 5V, 0V
60
60
–PSRR
40
40
20
20
0
0
0.1
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
1
10
100
1k
10k 100k
1M
FREQUENCY (Hz)
6010 G20
6010 G21
sn6010 6010fs
8
LT6010
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Output Impedance vs Frequency
Open-Loop Gain vs Frequency
Gain and Phase vs Frequency
1000
100
10
140
120
100
80
60
50
–80
V
T
= 5V, 0V
= 25°C
V
T
= 5V, 0V
S
A
V
T
= 5V, 0V
= 25°C
= 10k
S
S
= 25°C
A
A
R
= 10k
R
L
L
40
–120
–160
–200
–240
–280
30
GAIN
20
60
PHASE
A
= 100
V
10
40
1
0
20
A
= 10
V
–10
–20
–30
–40
0
0.1
0.01
–20
–40
A
= 1
V
1
10
100
1k
10k 100k
1M
0.01 0.1
1
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1k
10k
100k
FREQUENCY (Hz)
1M
10M
FREQUENCY (Hz)
6010 G22
6010 G23
6010 G24
Supply Current in Shutdown Mode
vs Temperature
Gain vs Frequency, AV = 1
Gain vs Frequency, AV = –1
10
5
10
5
40
35
30
25
20
15
10
5
V
= 5V, 0V
= 25°C
V
= 5V, 0V
= 25°C
S
A
S
A
T
T
C
= 500pF
L
C
= 500pF
L
0
0
C
= 50pF
L
C
= 50pF
L
V
S
= ±15V
–5
–5
–10
–15
–20
–10
–15
–20
V
S
= 5V, 0V
0
1k
10k
100k
1M
1k
10k
100k
1M
–40–30–20–10 0 10 20 30 40 50 60 70 80 90
FREQUENCY (Hz)
FREQUENCY (Hz)
TEMPERATURE (°C)
6010 G25
6010 G26
6010 G30
Small-Signal Transient Response
Large-Signal Transient Response
Rail-to-Rail Output Swing
5V
20mV/DIV
2V/DIV
0V
1V/DIV
0V
AV = 1
2µs/DIV
6011 G27
AV = –1
VS = ±15V
50µs/DIV
6011 G28
AV = –1
VS = 5V, 0V
100µs/DIV
6011 G29
sn6010 6010fs
9
LT6010
W U U
U
APPLICATIO S I FOR ATIO
Preserving Input Precision
allowed)fora10Vdifferentialinputvoltage.Useadditional
external series resistors to limit the input current to 10mA
in applications where differential inputs of more than 10V
areexpected. Forexample, a1kresistorinserieswitheach
input provides protection against 30V differential voltage.
Preserving the input accuracy of the LT6010 requires that
the applications circuit and PC board layout do not intro-
duceerrorscomparabletoorgreaterthanthe20µVtypical
offset of the amplifier. Temperature differentials across
the input connections can generate thermocouple volt-
ages of 10’s of microvolts, so the connections to the input
leads should be short, close together, and away from heat
dissipating components. Air currents across the board
can also generate temperature differentials.
Input Common Mode Range
The LT6010 output is able to swing nearly to each power
supplyrail(rail-to-railout), buttheinputstageislimitedto
operating between V– + 1V and V+ – 1.2V. Exceeding this
common mode range will cause the gain to drop to zero,
however no phase reversal will occur.
The extremely low input bias currents (20pA typical) allow
high accuracy to be maintained with high impedance
sources and feedback resistors. The LT6010 low input
bias currents are obtained by a cancellation circuit on-
chip. The input bias currents are permanently trimmed at
wafer testing to a low level. Do not try to balance the input
resistancesineachinputlead;instead, keeptheresistance
at either input as low as possible for maximum accuracy.
Total Input Noise
The LT6010 amplifier contributes negligible noise to the
systemwhendrivenbysensors(sources)withimpedance
between 20kΩ and 1MΩ. Throughout this range, total
inputnoiseisdominatedbythe4kTRS noiseofthesource.
If the source impedance is less than 20kΩ, the input
voltage noise of the amplifier starts to contribute with a
minimum noise of 14nV/√Hz for very low source imped-
ance.Ifthesourceimpedanceismorethan1MΩ,theinput
current noise of the amplifier, multiplied by this high
impedance, starts to contribute and eventually dominate.
Total input noise spectral density can be calculated as:
Leakage currents on the PC board can be higher than the
LT6010’s input bias current. For example, 10GΩ of leak-
age between a 15V supply lead and an input lead will gen-
erate1.5nA!Surroundtheinputleadsbyaguardring,driven
to the same potential as the input common mode, to avoid
excessive leakage in high impedance applications.
Input Protection
2
v
n(TOTAL) = en + 4kTRS +(inRS)2
The LT6010 features on-chip back-to-back diodes be-
tween the input devices, along with 500Ω resistors in
series with either input. This internal protection limits the
input current to approximately 10mA (the maximum
where en = 14nV/√Hz, in = 0.1pA/√Hz and RS the total
impedance at the input, including the source impedance.
sn6010 6010fs
10
LT6010
W U U
APPLICATIO S I FOR ATIO
U
Offset Voltage Adjustment
createsadriftof(VOS/300µV)µV/°C,e.g.,ifVOS isadjusted
to300µV,thechangeindriftwillbe1µV/°C.Theadjustment
rangewitha50kpotisapproximately±0.9mV(seeFigures
1Aand1B).Thesensitivityandresolutionofthenullingcan
beimprovedbyusingasmallerpotinconjunctionwithfixed
resistors. The configuration shown has an approximate
nulling range of ±150µV (see Figures 2A and 2B).
The input offset voltage of the LT6010 and its drift with
temperature are permanently trimmed at wafer testing to
the low level as specified in the electrical characteristic.
However,iffurtheradjustmentofVOSisdesired,nullingwith
a 50k potentiometer is possible and will not degrade drift
with temperature. Trimming to a value other than zero
Standard Adjustment
1.0
0.8
0.6
0.4
V
CC
50k
0.2
0
1
–0.2
–0.4
–0.6
–0.8
–1.0
8
2
3
–
7
INPUT
LT6010
4
OUTPUT
6
+
6010 F01a
V
ee
0
0.2
0.4
0.6
0.8
1.0
POTENTIOMETER POSITION
6010 F01b
Figure 1A
Figure 1B
Improved Sensitivity Adjustment
200
150
100
50
10k
50k
10k
V
CC
0
1
–50
–100
–150
–200
8
2
3
–
+
7
INPUT
LT6010
OUTPUT
6
4
6010 F02a
V
0
0.2
0.4
0.6
0.8
1.0
ee
POTENTIOMETER POSITION
6010 F02b
Figure 2A
Figure 2B
sn6010 6010fs
11
LT6010
W U U
U
APPLICATIO S I FOR ATIO
Shutdown
Rail-to-Rail Operation
The LT6010 can be put into shutdown mode to conserve
power. When the SHDN pin is biased at less than 0.2V
above the negative supply, the part operates normally.
When pulled 2V or more above V–, the supply current
drops to about 12µA, shutting down the op amp.
TheLT6010outputscanswingtowithinmillivoltsofeither
supply rail, but the inputs cannot. However, for most op
ampconfigurations, theinputsneedtoswinglessthanthe
outputs. Figure 4 shows the basic op amp configurations,
lists what happens to the op amp inputs and specifies
whether or not the op amp must have rail-to-rail inputs.
Select a rail-to-rail input op amp only when really neces-
sary, because the input precision specifications are usu-
ally inferior.
The output of the LT6010 op amp is not isolated from the
inputs while in shutdown mode. Therefore, this shutdown
feature cannot be used for multiplexing applications.
There is an internal 85k resistor at the SHDN pin. If the
SHDN voltage source is more than 2V above the negative
supply, an external series resistor can be placed between
the source and SHDN pin to reduce SHDN pin current (see
Figure 3). For an example of suggested values see Table 1.
TheresistorslistedensurethatthevoltageattheSHDNpin
is 2V above the negative supply.
V
+
–
REF
R
G
V
IN
R
F
INVERTING: A = –R /R
G
OP AMP INPUTS DO NOT MOVE,
BUT ARE FIXED AT DC BIAS
V
F
Table 1
POINT V
REF
V
SHDN
(V)
R
(kΩ)
SHDN
INPUT DOES NOT HAVE TO BE
RAIL-TO-RAIL
2
NONE
3
4
5
77k
V
+
–
V
+
153k
230k
IN
IN
–
R
F
SHDN
5
R
SHDN
85k
R
G
+
–
6010 F04
V
REF
V
SHDN
NONINVERTING: A = 1 + R /R
NONINVERTING: A = 1
V
V
F
G
INPUTS MOVE AS MUCH AS
INPUTS MOVE AS MUCH AS THE
OUTPUT
V
V
EE
EE
V
, BUT THE OUTPUT MOVES
6010 F03
IN
MORE
Figure 3
INPUT MUST BE RAIL-TO-RAIL
FOR OVERALL CIRCUIT
RAIL-TO-RAIL PERFORMANCE
INPUT MAY NOT HAVE TO BE
RAIL-TO-RAIL
Capacitive Loads
TheLT6010candrivecapacitiveloadsupto500pFinunity
gain. The capacitive load driving capability increases as
the amplifier is used in higher gain configurations. A small
series resistance between the output and the load further
increases the amount of capacitance that the amplifier can
drive.
Figure 4. Some Op Amp Configurations Do Not Require
Rail-to-Rail Inputs to Achieve Rail-to-Rail Outputs
sn6010 6010fs
12
LT6010
W
W
SI PLIFIED SCHE ATIC
+
7
1
V
R6
8
NULL
R3
R4
R5
NULL
Q7
Q3
Q18
Q19
Q6
C1
Q8
R
C1
Q5
Q4
Q13
C2
Q21
D3
D4
D5
6
OUT
Q17
B
A
BIAS CURRENT
GENERATOR
Q12
Q16
C3
R1
500Ω
Q14
Q10
C
Q20
2
–IN
+IN
B
A
D1
D2
3
R2
500Ω
Q1
Q2
Q11
5
4
SHDN
Q9
Q15
Q10
–
6010 SS
V
sn6010 6010fs
13
LT6010
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
0.675 ±0.05
3.5 ±0.05
2.15 ±0.05 (2 SIDES)
1.65 ±0.05
PACKAGE
OUTLINE
0.28 ± 0.05
0.50
BSC
2.38 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
R = 0.115
0.38 ± 0.10
TYP
5
8
3.00 ±0.10
(4 SIDES)
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
(DD8) DFN 0203
4
1
0.28 ± 0.05
0.75 ±0.05
0.200 REF
0.50 BSC
2.38 ±0.10
(2 SIDES)
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
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
sn6010 6010fs
14
LT6010
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
sn6010 6010fs
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.
15
LT6010
U
TYPICAL APPLICATIO
Precision JFET Input Transimpedance Photodiode Amplifier
C4
0.5pF
C3
1pF
+
R3
100k, 1%
V
J1
+
–
–
U1
LT6010
U2
LT6230
R4
V
OUT
2.55k
R2
1k
5%
+
–
R1
330k, 5%
V
J1: PHILIPS BF862
C2
0.1µF
S1: SIEMENS/INFINEON SFH203 PHOTODIODE (~3pF)
S1
C1
0.01µF
V
= ±5V
SUPPLY
SUPPLY
I
= 5.6mA
BANDWIDTH = 6MHz
A
–
V
= 100kΩ
Z
OUTPUT OFFSET ≈ 50µV TYPICALLY
6010 TA02
RELATED PARTS
PART NUMBER
LT6011/6012
LT1001
DESCRIPTION
Dual/Quad Precision Op Amps
Low Power, Picoamp Input Precision Op Amp
Rail-to-Rail Output, Picoamp Input Precision Op Amp
COMMENTS
135µA, Rail-to-Rail Output
250pA Input Bias Current
LT1880
C
up to 1000pF
LOAD
sn6010 6010fs
LT/TP 1203 1K • PRINTED IN USA
16 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
LINEAR TECHNOLOGY CORPORATION 2003
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