LT1192
Ultrahigh Speed
Operational Amplifier
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Gain Bandwidth Product, A
V
= 5: 350MHz
Slew Rate: 450V/µs
Low Cost
Output Current:
±50mA
Settling Time: 90ns to 0.1%
Differential Gain Error: 0.1% (R
L
= 1k)
Differential Phase Error: 0.01° (R
L
= 1k)
High Open-Loop Gain: 100V/mV Min
Single Supply 5V Operation
Output Shutdown
The LT1192 is a video operational amplifier optimized for
operation on
±5V
and a single 5V supply. Unlike many
high speed amplifiers, this amplifier features high open-
loop gain, over 100dB, and the ability to drive heavy loads
to a full-power bandwidth of 20MHz at 7V
P-P
. In addition
to its very fast slew rate, the LT1192 has a high gain
bandwidth of 350MHz and is compensated for a closed-
loop gain of 5 or greater.
Because the LT1192 is a true operational amplifier, it is an
ideal choice for wideband signal conditioning, active fil-
ters, and applications requiring speed, accuracy and low
cost.
The LT1192 is available in 8-pin PDIP and SO packages
with standard pinouts. The normally unused Pin 5 is used
for a shutdown feature that shuts off the output and
reduces power dissipation to a mere 15mW.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Video Cable Drivers
Video Signal Processing
Photo Diode Amplifier
Pulse Amplifiers
D/A Current to Voltage Conversion
TYPICAL APPLICATIO
Double Terminated Cable Driver
Inverter Pulse Response
5V
3
+
LT1192
7
6
4
75Ω
CABLE
2
–
910
Ω
75Ω
100Ω
–5V
–3dB BANDWIDTH = 55MHz
LT1192 • TA01
A
V
= – 5, C
L
= 10pF SCOPE PROBE
U
LT1192 • TA02
U
U
1
LT1192
ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE DESCRIPTIO
TOP VIEW
BAL 1
–IN 2
+IN 3
V
–
4
N8 PACKAGE
8-LEAD PDIP
8
7
6
5
BAL
V
+
OUT
SHDN
Total Supply Voltage (V
+
to V
–
) ............................. 18V
Differential Input Voltage ........................................
±6V
Input Voltage ..........................................................
±V
S
Output Short-Circuit Duration (Note 2) ........ Continuous
Operating Temperature Range
LT1192M
(OBSOLETE) ...............
–55°C to 125°C
LT1192C ................................................. 0°C to 70°C
Maximum Junction Temperature ......................... 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
S8 PART MARKING
1192
LT1192MJ8
LT1192CJ8
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C,
θ
JA
= 100°C/W (N8)
T
JMAX
= 150°C,
θ
JA
= 150°C/W (S8)
J8 PACKAGE 8-LEAD CERDIP
T
JMAX
= 150°C,
θ
JA
= 100°C/W
OBSOLETE PACKAGE
Consider the N8 or S8 Packages for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature
ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
I
OS
I
B
e
n
i
n
R
IN
C
IN
CMRR
PSRR
A
VOL
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Noise Voltage
Input Noise Current
Input Resistance
Input Capacitance
Input Voltage Range
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Differential Mode
Common Mode
A
V
= 10
(Note 3)
f
O
= 10kHz
f
O
= 10kHz
V
S
=
±5V,
T
A
= 25°C, C
L
≤
10pF, Pin 5 open circuit unless otherwise noted.
MIN
LT1192M/C
TYP
MAX
0.2
0.2
±0.5
9
4
16
5
1.8
–2.5
70
70
100
16
20
±3.7
±6.7
325
17.2
23
85
85
180
35
60
±4
±7
450
23.9
350
35
2.7
3.5
50
90
50
3.5
2.5
3
1.7
±2.5
UNITS
mV
mV
µA
µA
nV/√Hz
pA/√Hz
kΩ
MΩ
pF
V
dB
dB
V/mV
V/mV
V/mV
V
V
V/µs
MHz
MHz
ns
ns
ns
%
ns
CONDITIONS
N8 Package
SO-8 Package
V
CM
= – 2.5V to 3.5V
V
S
=
±2.375V
to
±8V
R
L
= 1k, V
O
=
±3V
R
L
= 100Ω, V
O
=
±3V
V
S
=
±8V,
R
L
= 100Ω, V
O
=
±5V
V
S
=
±5V,
R
L
= 1k
V
S
=
±8V,
R
L
= 1k
A
V
= – 10, R
L
= 1k (Notes 4, 9)
V
O
= 6V
P-P
(Note 5)
A
V
= 50, V
O
=
±1.5V,
20% to 80% (Note 9)
A
V
= 5, V
O
=
±125mV,
10% to 90%
A
V
= 5, V
O
=
±125mV,
50% to 50%
A
V
= 5, V
O
=
±125mV
3V Step, 0.1% (Note 6)
V
OUT
SR
FPBW
GBW
t
r1
, t
f1
t
r2
, t
f2
t
PD
t
s
Output Voltage Swing
Slew Rate
Full-Power Bandwidth
Gain Bandwidth Product
Rise Time, Fall Time
Rise Time, Fall Time
Propagation Delay
Overshoot
Settling Time
2
U
ORDER PART
NUMBER
LT1192CN8
LT1192CS8
U
W W
W
LT1192
ELECTRICAL CHARACTERISTICS
SYMBOL
Diff A
V
Diff Ph
I
S
I
SHDN
t
ON
t
OFF
PARAMETER
Differential Gain
Differential Phase
Supply Current
Shutdown Supply Current
Shutdown Pin Current
Turn On Time
Turn Off Time
V
S
=
±5V,
T
A
= 25°C, C
L
≤
10pF, Pin 5 open circuit unless otherwise noted.
MIN
LT1192M/C
TYP
MAX
0.23
0.15
32
38
2
50
1.3
20
100
400
UNITS
%
Deg
P-P
mA
mA
µA
ns
ns
CONDITIONS
R
L
= 150Ω, A
V
= 10 (Note 7)
R
L
= 150Ω, A
V
= 10 (Note 7)
Pin 5 at V
–
Pin 5 at V
–
Pin 5 from V
–
to Ground, R
L
= 1k
Pin 5 from Ground to V
–
, R
L
= 1k
V
S+
= 5V, V
S–
= 0V, V
CM
= 2.5V, T
A
= 25°C, C
L
≤
10pF, Pin 5 open circuit unless otherwise noted.
SYMBOL
V
OS
I
OS
I
B
CMRR
A
VOL
V
OUT
SR
GBW
I
S
I
SHDN
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Voltage Range
Common Mode Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing
Slew Rate
Gain Bandwidth Product
Supply Current
Shutdown Supply Current
Shutdown Pin Current
Pin 5 at V
–
Pin 5 at V
–
(Note 3)
V
CM
= 2V to 3.5V
R
L
= 100Ω to Ground, V
O
= 1V to 3V
R
L
= 100Ω to Ground
A
V
= –5, V
O
= 1V to 3V
V
OUT
High
V
OUT
Low
2
60
30
3.6
80
50
3.8
0.25
250
350
29
1.2
20
36
2
50
0.4
V/µs
MHz
mA
mA
µA
CONDITIONS
All Packages
MIN
LT1192M/C
TYP
MAX
0.4
0.2
±0.5
4
1.2
±1.5
3.5
UNITS
mV
µA
µA
V
dB
V/mV
V
The
q
denotes the specifications which apply over the full operating temperature range of – 55°C
≤
T
A
≤
125°C.
V
S
=
±5V,
Pin 5 open circuit unless otherwise noted.
SYMBOL
V
OS
∆V
OS
/∆T
I
OS
I
B
CMRR
PSRR
A
VOL
V
OUT
I
S
I
SHDN
PARAMETER
Input Offset Voltage
Input V
OS
Drift
Input Offset Current
Input Bias Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing
Supply Current
Shutdown Supply Current
Shutdown Pin Current
Pin 5 at V
–
(Note 8)
Pin 5 at V
–
V
CM
= – 2.5V to 3.5V
V
S
=
±2.375V
to
±5V
R
L
= 1k, V
O
=
±3V
R
L
= 100Ω, V
O
=
±3V
R
L
= 1k
CONDITIONS
N8 Package
q
q
q
q
q
q
q
q
q
q
q
q
MIN
LT1192M
TYP
0.4
2
0.2
±0.5
MAX
3.5
2
±2.5
UNITS
mV
µV/°C
µA
µA
dB
dB
V/mV
V/mV
V
65
70
55
5
±3.7
85
90
90
14
±3.9
32
1.5
20
38
2.5
mA
mA
µA
3
LT1192
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OS
∆V
OS
/∆T
I
OS
I
B
CMRR
PSRR
A
VOL
V
OUT
I
S
I
SHDN
PARAMETER
Input Offset Voltage
Input V
OS
Drift
Input Offset Current
Input Bias Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Output Voltage Swing
Supply Current
Shutdown Supply Current
Shutdown Pin Current
The
q
denotes the specifications which apply over the full operating
temperature range of 0°C
≤
T
A
≤
70°C. V
S
=
±5V,
Pin 5 open circuit unless otherwise noted.
CONDITIONS
N8 Package
SO-8 Package
q
q
q
q
MIN
LT1191C
TYP
0.4
2
0.2
±0.5
MAX
3
4
1.7
±2.5
UNITS
mV
mV
µV/°C
µA
µA
dB
dB
V/mV
V/mV
V
V
CM
= – 2.5V to 3.5V
V
S
=
±
2.375V to
±5V
R
L
= 1k, V
O
=
±
3V
R
L
= 100Ω, V
O
=
±
3V
R
L
= 1k
Pin 5 at V
–
(Note 8)
Pin 5 at V
–
q
q
q
q
q
q
q
q
68
70
90
10
±3.7
85
90
140
30
±3.9
32
1.4
20
38
2.1
mA
mA
µA
Note 1:
Absolute Maximum Ratings are those values beyond which the
life of the device may be impaired.
Note 2:
A heat sink is required to keep the junction temperature below
absolute maximum when the output is shorted.
Note 3:
Exceeding the input common mode range may cause the output
to invert.
Note 4:
Slew rate is measured between
±1V
on the output, with a
±0.3V
input step.
Note 5:
Full-power bandwidth is calculated from the slew rate
measurement:
FPBW = SR/2πV
P
.
Note 6:
Settling time measurement techniques are shown in “Take the
Guesswork Out of Settling Time Measurements,” EDN, September 19,
1985. A
V
= –5, R
L
= 1k.
Note 7:
NTSC (3.58MHz). For R
L
= 1k, Diff A
V
= 0.1%, Diff Ph = 0.01°.
Diff A
V
and Diff Ph can be reduced for A
V
< 10.
Note 8:
See Applications section for shutdown at elevated temperatures.
Do not operate the shutdown above T
J
> 125°C.
Note 9:
AC parameters are 100% tested on the ceramic and plastic DIP
packaged parts (J and N suffix) and are sample tested on every lot of the
SO packaged parts (S suffix).
Optional Offset Nulling Circuit
5V
3
+
–
1
7
6
4
8
–5V
LT1192
2
INPUT OFFSET VOLTAGE CAN BE ADJUSTED OVER A
±20mV
RANGE WITH A 1k
Ω
TO 10k
Ω
POTENTIOMETER
LT1192 • TA03
4
LT1192
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current
vs Common Mode Voltage
4
3
V
S
=
±5V
–0.3
INPUT BIAS CURRENT (µA)
INPUT BIAS CURRENT (µA)
–0.4
+I
B
–0.5
I
OS
–0.6
–I
B
COMMON MODE VOLTAGE (V)
2
1
25°C
0
–1
–2
–4
–3
1
3
–2 –1
0
2
COMMON MODE VOLTAGE (V)
4
–55°C
125°C
Equivalent Input Noise Voltage
vs Frequency
EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz)
250
200
150
100
50
0
V
S
=
±5V
T
A
= 25°C
R
S
= 0Ω
EQUIVALENT INPUT NOISE CURRENT (pA/√Hz)
300
SUPPLY CURRENT (mA)
10
100
1k
10k
FREQUENCY (Hz)
Shutdown Supply Current
vs Temperature
5.0
V
S
=
±5V
V
SHDN
= –V
EE
+ 0.4V
4.0
3.5
3.0
2.5
2.0
V
SHDN
= –V
EE
1.5
1.0
–50
–25
0
25
75
50
TEMPERATURE (°C)
100
125
V
SHDN
= –V
EE
+ 0.2V
SHUTDOWN SUPPLY CURRENT (mA)
OPEN-LOOP VOLTAGE GAIN (V/V)
R
L
= 1k
OPEN-LOOP VOLTAGE GAIN (V/V)
4.5
U W
LT1192 • TPC01
LT1192 • TPC04
LT1192 • TPC07
Input Bias Current
vs Temperature
V
S
=
±5V
10
8
6
4
2
0
–2
–4
–6
–8
–0.8
–50
–10
–25
50
0
25
75
TEMPERATURE (°C)
100
125
Common Mode Voltage
vs Supply Voltage
–55°C
25°C
+V COMMON MODE
125
°
C
–0.7
–V COMMON MODE
–55°C
25°C
125°C
0
2
6
4
8
±V
SUPPLY VOLTAGE (V)
10
LT1192 • TPC02
LT1192 • TPC03
Equivalent Input Noise Current
vs Frequency
80
V
S
=
±5V
T
A
= 25°C
R
S
= 100k
40
Supply Current vs Supply Voltage
60
30
–55°C
25°C
20
125°C
40
20
10
0
10
100
1k
10k
FREQUENCY (Hz)
100k
0
0
2
8
4
6
±SUPPLY
VOLTAGE (V)
10
100k
LT1192 • TPC05
LT1192 • TPC06
Open-Loop Voltage Gain
vs Temperature
200k
V
S
=
±5V
V
O
=
±3V
200k
Open-Loop Voltage Gain
vs Load Resistance
V
S
=
±5V
V
O
=
±3V
T
A
= 25°C
150k
150k
100k
100k
50k
R
L
= 100Ω
50k
0
–50 –25
0
25
75
0
50
TEMPERATURE (°C)
100
125
10
100
LOAD RESISTANCE (Ω)
1000
LT1192 • TPC09
LT1192 • TPC08
5
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
