LT1809CS8 [Linear]
180MHz, 350V/ms Rail-to-Rail Input and Output Low Distortion Op Amp; 为180MHz , 350V / MS轨至轨输入和输出低失真运算放大器型号: | LT1809CS8 |
厂家: | Linear |
描述: | 180MHz, 350V/ms Rail-to-Rail Input and Output Low Distortion Op Amp |
文件: | 总8页 (文件大小:142K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Final Electrical Specifications
LT1809
180MHz, 350V/µs
Rail-to-Rail Input and Output
Low Distortion Op Amp
January 2000
U
DESCRIPTIO
FEATURES
The LT®1809 is a low distortion rail-to-rail input and
output op amp with a 350V/µs slew rate. The amplifier has
a –3dB bandwidth of 320MHz at unity-gain, a gain-band-
width product of 180MHz (AV ≥ 10) and an 85mA output
current to fit the needs of low voltage, high performance
signal conditioning systems.
■
–3dB Bandwidth: 320MHz, AV = 1
■
Gain-Bandwidth Product: 180MHz, AV ≥ 10
■
Slew Rate: 350V/µs
■
Wide Supply Range: 2.5V to 12.6V
■
Large Output Current: 85mA
■
Low Distortion, 5MHz: –90dBc
■
Input Common Mode Range Includes Both Rails
The LT1809 has an input range that includes both supply
rails and an output that swings within 20mV of either
supply rail to maximize the signal dynamic range in low
supply applications.
■
Output Swings Rail-to-Rail
■
Input Offset Voltage, Rail-to-Rail: 2.5mV Max
■
Common Mode Rejection: 89dB Typ
Power Supply Rejection: 87dB Typ
■
■
■
■
■
The LT1809 has very low distortion (–90dBc) up to 5MHz
that allows it to be used in high performance data acqui-
sition systems.
Open-Loop Gain: 100V/mV Typ
Shutdown Pin
8-Pin SO-8 Package
Operating Temperature Range –40°C to 85°C
The LT1809 maintains its performance for supplies from
2.5V to 12.6V and is specified at 3V, 5V and ±5V supplies.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output.
U
APPLICATIO S
■
Active Filters
The LT1809 is available in the 8-pin SO package with the
standardopamppinout.Thisdevicecanbeusedasaplug-
■
Rail-to-Rail Buffer Amplifiers
■
Driving A/D Converters
in replacement for many op amps to improve input/output
range and performance.
■
Low Voltage Signal Processing
■
Video Line Driver
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
Filter Frequency Response
10
0
Single 3V Supply, 4MHz, 4th Order Butterworth Filter
232Ω
–10
–20
274Ω
47pF
–30
–40
–50
–60
–70
–80
–90
22pF
232Ω
665Ω
V
IN
–
274Ω
562Ω
220pF
–
+
LT1809
470pF
V
LT1809
+
OUT
V
V
= 3V, 0V
S
= 2.5V
V
P-P
IN
S
1809 TA01
2
10k
100k
1M
10M
100M
FREQUENCY (Hz)
1809 TA01a
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.
1
LT1809
W W
U W
U
W
U
ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
TOP VIEW
ORDER PART
Total Supply Voltage (V+ to V–) ........................... 12.6V
Input Voltage (Note 2) ..............................................±VS
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
Junction Temperature........................................... 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
NUMBER
SHDN
–IN
1
2
3
4
8
7
6
5
NC
+
V
LT1809CS8
LT1809IS8
+IN
OUT
NC
–
V
S8 PACKAGE
8-LEAD PLASTIC SO
S8 PART
MARKING
TJMAX = 150°C, θJA = 190°C/W
1809
1809I
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
TA = 25°C. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
V
Input Offset Voltage
V
V
= V
= V
0.6
0.6
2.5
2.5
mV
mV
OS
CM
CM
–
–
+
+
+
∆V
Input Offset Shift
Input Bias Current
V
= V to V
0.3
1.75
8
mV
OS
CM
+
I
V
V
= V
= V
1.8
–13
µA
µA
B
CM
CM
–
–27.5
–
∆I
B
Input Bias Current Shift
Input Offset Current
V
= V to V
11.8
35.5
µA
CM
+
I
V
V
= V
= V
0.05
0.2
1.2
4
µA
µA
OS
CM
CM
–
–
∆I
OS
Input Offset Current Shift
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
V
= V to V
0.25
16
5
5.2
µA
nV/√Hz
pA/√Hz
pF
CM
e
f = 10kHz
f = 10kHz
n
i
n
C
A
2
IN
VOL
Large-Signal Voltage Gain
V = 5V, V = 0.5V to 4.5V, R = 1k
V = 5V, V = 1V to 4V, R = 100Ω
V = 3V, V = 0.5V to 2.5V, R = 1k
35
4.5
22
90
10
42
V/mV
V/mV
V/mV
S
O
L
S
O
L
S
O
L
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
69
64
82
78
dB
dB
S
CM
–
+
V = 3V, V = V to V
S
CM
–
+
Input Common Mode Range
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
V
V
V
dB
V
V = 2.5V to 10V, V = 0V
73
87
S
CM
2.3
2.5
2
LT1809
ELECTRICAL CHARACTERISTICS
TA = 25°C. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open; VCM = VOUT = half supply unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Output Voltage Swing LOW (Note 7)
Output Voltage Swing HIGH (Note 7)
Short-Circuit Current
No Load
6
40
150
20
80
300
mV
mV
mV
OL
OH
I
I
= 5mA
= 25mA
SINK
SINK
No Load
17
80
300
40
160
500
mV
mV
mV
I
= 5mA
= 25mA
SOURCE
SOURCE
I
I
I
V = 5V
±50
±40
±85
±70
mA
mA
SC
S
V = 3V
S
Supply Current
12.5
17
mA
S
Disable Supply Current
V = 5V, V
V = 3V, V
S
= 0V
= 0V
0.55
0.31
0.8
0.5
mA
mA
S
SHDN
SHDN
GBW
SR
Gain-Bandwidth Product
Slew Rate
Frequency = 2MHz
V = 5V, A = –1, R = 1k, V = 4V
P-P
160
300
MHz
V/µs
dB
S
V
L
O
THD
Total Harmonic Distortion
Settling Time
V = 5V, A = 1, R = 1k, V = 2V , f = 5MHz
–86
40
S
V
L
O
P-P C
t
0.01%, V = 5V, V
= 2V, A = 1, R = 1k
ns
S
S
STEP
V
L
∆G
Differential Gain (NTSC)
Differential Phase (NTSC)
V = 5V, A = 2, R = 150Ω
0.015
0.05
%
S
V
L
∆θ
%
The ● denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open;
VCM = VOUT = half supply unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
V
Input Offset Voltage
V
V
= V
= V
●
●
1
1
3
3
mV
mV
OS
CM
CM
–
+
–
V
TC
Input Offset Voltage Drift (Note 8)
V
V
= V
= V
●
●
9
9
25
25
µV/°C
µV/°C
OS
CM
CM
–
+
∆V
Input Offset Voltage Shift
Input Bias Current
V
= V to V
●
0.5
2
mV
OS
CM
+
I
V
V
= V – 0.1V
●
●
2
–14
10
µA
µA
B
CM
CM
–
= V + 0.2V
–30
–
+
∆I
Input Bias Current Shift
Input Offset Current
V
= V + 0.2V to V – 0.1V
●
12
40
µA
B
CM
+
I
V
V
= V – 0.1V
●
●
0.05
0.40
1.5
4.5
µA
µA
OS
CM
CM
–
= V + 0.2V
–
+
∆I
Input Offset Current Shift
Large-Signal Voltage Gain
V
= V + 0.2V to V – 0.1V
●
0.45
6
µA
OS
CM
A
V = 5V, V = 0.5V to 4.5V, R = 1k
V = 5V, V = 1V to 4V, R = 100Ω
V = 3V, V = 0.5V to 2.5V, R = 1k
●
●
●
25
3.5
16
80
8.5
40
V/mV
V/mV
V/mV
VOL
S
O
L
S
O
L
S
O
L
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
●
●
67.5
63.5
80
75
dB
dB
S
CM
–
+
V = 3V, V = V to V
S
CM
–
+
Input Common Mode Range
●
●
●
V
V
V
dB
V
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing LOW (Note 7)
V = 2.5V to 10V, V = 0V
71
83
S
CM
2.3
2.5
V
No Load
●
●
●
8
40
160
25
80
320
mV
mV
mV
OL
I
I
= 5mA
= 25mA
SINK
SINK
3
LT1809
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open;
VCM = VOUT = half supply unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
Output Voltage Swing HIGH (Note 7)
Short-Circuit Current
No Load
●
●
●
50
110
340
100
220
600
mV
mV
mV
OH
I
I
= 5mA
= 25mA
SOURCE
SOURCE
I
I
V = 5V
●
●
±45
±35
±75
±65
mA
mA
SC
S
V = 3V
S
Supply Current
●
15
20
mA
S
Disable Supply Current
V = 5V, V
V = 3V, V
S
= 0V
= 0V
●
●
0.58
0.35
1
0.75
mA
mA
S
SHDN
SHDN
GBW
SR
Gain-Bandwidth Product
Slew Rate
●
●
145
250
MHz
V = 5V, A = –1, R = 1k, V = 4V
P-P
V/µs
S
V
L
O
The ● denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open;
VCM = VOUT = half supply unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
Vos
Input Offset Voltage
V
V
= V
= V
●
●
1
1
3.5
3.5
mV
mV
CM
CM
–
+
–
Vos TC
∆Vos
Input Offset Voltage Drift (Note 8)
V
V
= V
= V
●
●
9
9
25
25
µV/°C
µV/°C
CM
CM
–
Input Offset Voltage Shift
Input Bias Current
V
= V
●
0.5
2.25
12
mV
CM
+
I
V
V
= V – 0.1V
●
●
2
–17
µA
µA
B
CM
CM
–
= V + 0.2V
–35
–
+
∆I
Input Bias Current Shift
Input Offset Current
V
= V + 0.2V to V – 0.1V
●
14
47
µA
B
CM
+
I
V
V
= V – 0.1V
●
●
0.08
0.5
2
6
µA
µA
OS
CM
CM
–
= V + 0.2V
–
+
∆I
Input Offset Current Shift
Large-Signal Voltage Gain
V
= V + 0.2V to V – 0.1V
●
0.58
7.5
µA
OS
CM
A
V = 5V, V = 0.5V to 4.5V, R = 1k
V = 5V, V = 1V to 4V, R = 100Ω
V = 3V, V = 0.5V to 2.5V, R = 1k
●
●
●
20
2.5
12
60
7
35
V/mV
V/mV
V/mV
VOL
S
O
L
S
O
L
S
O
L
–
+
CMRR
PSRR
Common Mode Rejection Ratio
V = 5V, V = V to V
●
●
66.5
62.5
80
75.5
dB
dB
S
CM
–
+
V = 3V, V = V to V
S
CM
–
+
Input Common Mode Range
●
●
●
V
V
V
dB
V
Power Supply Rejection Ratio
Minimum Supply Voltage (Note 6)
Output Voltage Swing LOW (Note 7)
V = 2.5V to 10V, V = 0V
71
83.5
2.3
S
CM
2.5
V
V
No Load
●
●
●
8
45
170
30
90
340
mV
mV
mV
OL
OH
I
I
= 5mA
= 25mA
SINK
SINK
Output Voltage Swing HIGH (Note 7)
Short-Circuit Current
No Load
●
●
●
55
110
350
120
230
620
mV
mV
mV
I
= 5mA
= 25mA
SOURCE
SOURCE
I
I
I
V = 5V
●
●
±35
±30
±70
±60
mA
mA
SC
S
V = 3V
S
Supply Current
●
15
21
mA
S
Disable Supply Current
V = 5V, V
V = 3V, V
S
= 0V
= 0V
●
●
0.58
0.35
1.1
0.85
mA
mA
S
SHDN
SHDN
4
LT1809
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = 5V, 0V; VS = 3V, 0V; VSHDN = open;
CM = VOUT = half supply unless otherwise noted. (Note 5)
V
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
140
180
MAX
UNITS
MHz
GBW
SR
Gain-Bandwidth Product
Slew Rate
Frequency = 2MHz
●
●
V = 5V, A = -1, R = 1k, V = 4V
P-P
V/µs
S
V
L
O
TA = 25°C. VS = ±5V, VSHDN = open, VCM = 0V, VOUT = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
V
Input Offset Voltage
V
V
= V
= V
0.8
0.8
3
3
mV
mV
OS
CM
CM
–
–
+
+
+
∆Vos
Input Offset Voltage Shift
Input Bias Current
V
= V to V
0.35
2
mV
CM
+
I
V
V
= V
= V
2
10
µA
µA
B
CM
CM
–
–30
–12.5
–
∆I
B
Input Bias Current Shift
Input Offset Current
V
= V to V
13.5
42.5
µA
CM
+
I
V
V
= V
= V
0.05
0.4
2
5
µA
µA
OS
CM
CM
–
–
∆I
OS
Input Offset Current Shift
Input Noise Voltage Density
Input Noise Current Density
Input Capacitance
V
= V to V
0.45
16
5
7
µA
nV/√Hz
pA/√Hz
pF
CM
e
f = 10kHz
f = 10kHz
f = 100kHz
n
i
n
C
A
2
in
VOL
Large-Signal Voltage Gain
V = –4V to 4V, R = 1k
V = –2.5V to 2.5V, R = 100Ω
45
5
100
12
V/mV
V/mV
O
L
O
L
–
+
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
V
= V to V
73
89
dB
V
CM
–
+
V
V
+
–
PSRR
Power Supply Rejection Ratio
Output Voltage Swing LOW (Note 7)
V = 2.5V to 10V, V = 0V
73
87
dB
V
V
No Load
SINK
SINK
8
46
170
30
100
350
mV
mV
mV
OL
OH
I
I
= 5mA
= 25mA
Output Voltage Swing HIGH (Note 7)
No Load
SOURCE
SOURCE
30
90
310
60
200
600
mV
mV
mV
I
I
= 5mA
= 25mA
I
I
Short-Circuit Current
Supply Current
±60
±85
15
mA
mA
SC
20
S
Disable Supply Current
Gain-Bandwidth Product
Slew Rate
V
= 0V
0.6
180
350
0.9
mA
SHDN
GBW
SR
Frequency = 2MHz
120
175
MHz
V/µs
A = –1, R = 1k, V = ±4V,
Measure at V = ±3V
V
L
O
O
HD
Total Harmonic Distortion
Settling Time
A = 1, R = 1k, V = 2V , f = 5MHz
–90
60
dB
nS
%
V
L
O
P-P C
t
0.01%, V = 5V, A = 1, R = 1k
STEP V L
S
∆G
Differential Gain (NTSC)
Differential Phase (NTSC)
A = 2, R = 150
0.01
0.01
V
L
∆θ
%
5
LT1809
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the 0°C ≤ TA ≤ 70°C temperature range. VS = ±5V, VSHDN = open, VCM = 0V,
VOUT = 0V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
V
V
Input Offset Voltage
V
V
= V
= V
●
●
1
1
3.25
3.25
mV
mV
OS
OS
CM
CM
–
+
–
TC
Input Offset Voltage Drift (Note 8)
V
V
= V
= V
●
●
10
10
25
25
µV/°C
µV/°C
CM
CM
–
+
∆V
Input Offset Voltage Shift
Input Bias Current
V
= V to V
●
0.5
2.15
12.5
mV
OS
CM
+
I
V
V
= V – 0.1V
●
●
2.5
–15
µA
µA
B
CM
CM
–
= V +0.2V
–37.5
–
+
∆I
Input Bias Current Shift
Input Offset Current
V
= V + 0.2V to V – 0.1V
●
14
50
µA
B
CM
+
I
V
V
= V – 0.1V
●
●
0.06
0.5
2.25
6
µA
µA
OS
CM
CM
–
= V + 0.2V
–
+
∆I
Input Offset Current Shift
Large-Signal Voltage Gain
V
= V + 0.2V to V – 0.1V
●
0.56
8.25
µA
OS
CM
A
V = –4V to 4V, R = 1k
V = –2.5V to 2.5V, RL = 100Ω
●
●
35
4
90
10
V/mV
V/mV
VOL
O
L
O
–
+
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
V
= V to V
●
●
●
73.5
86
dB
V
CM
–
+
V
V
+
–
PSRR
Power Supply Rejection Ratio
Output Voltage Swing LOW (Note 7)
V = 2.5V to 10V, V = 0V
71
83
dB
V
V
No Load
●
●
●
10
45
185
40
100
370
mV
mV
mV
OL
OH
I
I
= 5mA
= 25mA
SINK
SINK
Output Voltage Swing HIGH (Note 7)
No Load
●
●
●
60
110
360
120
220
625
mV
mV
mV
I
I
= 5mA
SOURCE
SOURCE
= 25mA
I
I
Short-Circuit Current
Supply Current
●
●
●
●
●
±50
±75
17.5
0.6
mA
mA
SC
25
S
Disable Supply Current
Gain-Bandwidth Product
Slew Rate
V
= 0V
1.1
mA
SHDN
GBW
SR
Frequency = 2MHz
A = –1, R = 1k, V = ±4V,
100
150
170
300
MHz
V/µs
V
L
O
Measure at V = ±3V
O
The ● denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = ±5V, VSHDN = open, VCM = 0V,
VOUT = 0V unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
V
Input Offset Voltage
V
V
= V
= V
●
●
1
1
3.75
3.75
mV
mV
OS
CM
CM
–
+
–
V
TC
Input Offset Voltage Drift (Note 8)
V
V
= V
= V
●
●
10
10
25
25
µV/°C
µV/°C
OS
CM
CM
–
+
∆V
Input Offset Voltage Shift
Input Bias Current
V
= V to V
●
0.5
2.5
14
mV
OS
CM
+
I
V
V
= V – 0.1V
●
●
2.8
–17
µA
µA
B
CM
CM
–
= V + 0.2V
–45
–
+
∆I
B
Input Bias Current Shift
V
= V + 0.2V to V – 0.1V
●
19.8
59
µA
CM
6
LT1809
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the –40°C ≤ TA ≤ 85°C temperature range. VS = ±5V, VSHDN = open, VCM = 0V,
OUT = 0V unless otherwise noted. (Note 3)
V
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
+
I
Input Offset Current
V
V
= V – 0.1V
●
●
0.08
0.6
2.5
8
µA
µA
OS
CM
CM
–
= V + 0.2V
–
+
∆I
Input Offset Current Shift
Large-Signal Voltage Gain
V
= V + 0.2V to V – 0.1V
●
0.68
10.5
µA
OS
CM
A
V = –4V to 4V, R = 1k
V = –2.5V to 2.5V, R = 100Ω
●
●
25
3
80
10
V/mV
V/mV
VOL
O
L
O
L
–
+
CMRR
Common Mode Rejection Ratio
Input Common Mode Range
V
= V to V
●
●
●
72
86
dB
V
CM
–
+
V
V
+
–
PSRR
Power Supply Rejection Ratio
Output Voltage Swing LOW (Note 7)
V = 2.5V to 10V, V = 0V
71
83.5
dB
V
V
No Load
●
●
●
10
50
200
45
100
400
mV
mV
mV
OL
OH
I
I
= 5mA
= 25mA
SINK
SINK
Output Voltage Swing HIGH (Note 7)
No Load
●
●
●
70
115
360
140
240
650
mV
mV
mV
I
I
= 5mA
SOURCE
SOURCE
= 25mA
I
I
Short-Circuit Current
Supply Current
●
●
●
●
●
±40
±75
19
mA
mA
SC
25
S
Disable Supply Current
Gain-Bandwidth Product
Slew Rate
V
= 0V
0.65
160
220
1.15
mA
SHDN
GBW
SR
Frequency = 2MHz
A = –1, R = 1k, V = ±4V,
90
MHz
V/µs
110
V
L
O
Measure at V = ±2V
O
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs are protected by back-to-back diodes. If the differential
input voltage exceeds 1.4V, the input current should be limited to less than
10mA.
Note 5: The LT1809C is guaranteed to meet specified performance from
0°C to 70°C. The LT1809C 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 LT1809I is guaranteed to meet
specified performance from –40°C to 85°C.
Note 6: Minimum supply voltage is guaranteed by power supply rejection
ratio test.
Note 7: Output voltage swings are measured between the output and
Note 3: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefinitely.
power supply rails.
Note 8: This parameter is not 100% tested.
Note 4: The LT1809C/LT1809I are guaranteed functional over the
operating temperature range of –40 C and 85 C.
o
o
U
PACKAGE DESCRIPTIO
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
0.010 – 0.020
(0.254 – 0.508)
7
5
8
6
× 45°
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0.008 – 0.010
(0.203 – 0.254)
0°– 8° TYP
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
(0.406 – 1.270)
0.050
(1.270)
BSC
0.014 – 0.019
(0.355 – 0.483)
TYP
*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
1
2
3
4
SO8 1298
7
LT1809
U
TYPICAL APPLICATIO
Single Supply Video Line Driver
matching of the 75Ω line with the back-terminated resis-
tor, R5. The back termination will eliminate any reflection
of the signal that comes from the load. The input termina-
tion resistor, RT, is optional—it is used only if matching of
the incoming line is necessary. The values of C1, C2 and
C3 are selected to minimize the droop of the luminance
signal. In some less stringent requirements, the value of
capacitors could be reduced.
The LT1809 is a wideband rail-to-rail op amp with high
output current that allows it to drive video signals in low
supply applications. Figure 1 depicts a single supply video
line driver with AC coupling to minimize the quiescent
power dissipation. Resistors R1 and R2 are used to level-
shift the input and output to provide the largest signal
swing. The gain of two is set up with R3 and R4 to restore
the signal at VOUT which is attenuated by 6dB due to the
5V
C1
R1
33µF
5k
C3
3
2
7
LT1809
4
75Ω
R5
V
IN
+
–
1000µF
COAX CABLE
75Ω
6
R
R2
5k
T
V
OUT
75Ω
R
LOAD
75Ω
R4
1k
R3
1k
+
C2
150µF
1809 TA02
Figure 1. Single Supply Video Line Driver
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1632/LT1633
Dual/Quad 45MHz, 45V/µs Rail-to-Rail Input and Output Op Amps High DC Accuracy, 1.35mV V
, 70mA Output Current,
OS(MAX)
Max Supply Current 5.2mA per Amplifier
LT1630/LT1631
LT1215/LT1216
Dual/Quad 30MHz, 10V/µs Rail-to-Rail Input and Output Op Amps High DC Accuracy, 525µV V
, 70mA Output Current,
OS(MAX)
Max Supply Current 4.4mA per Amplifier
Dual/Quad 23MHz, 50V/µs Single Supply Precision Op Amps
Input Common Mode Includes Ground, 450µV V
6µV/°C Max Drift, Max Supply Current 6.6mA per Amplifier
,
OS(MAX)
1809i LT/TP 0100 4K • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
8
●
●
LINEAR TECHNOLOGY CORPORATION 2000
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
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