LINER LT1192CN8 Ultrahigh speed operational amplifier Datasheet

LT1192
Ultrahigh Speed
Operational Amplifier
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FEATURES
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DESCRIPTIO
Gain Bandwidth Product, AV = 5: 350MHz
Slew Rate: 450V/µs
Low Cost
Output Current: ±50mA
Settling Time: 90ns to 0.1%
Differential Gain Error: 0.1% (RL = 1k)
Differential Phase Error: 0.01° (RL = 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 openloop gain, over 100dB, and the ability to drive heavy loads
to a full-power bandwidth of 20MHz at 7VP-P. In addition
to its very fast slew rate, the LT1192 has a high gain
bandwidth of 350MHz and is compensated for a closedloop gain of 5 or greater.
Because the LT1192 is a true operational amplifier, it is an
ideal choice for wideband signal conditioning, active filters, and applications requiring speed, accuracy and low
cost.
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APPLICATIO S
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Video Cable Drivers
Video Signal Processing
Photo Diode Amplifier
Pulse Amplifiers
D/A Current to Voltage Conversion
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.
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TYPICAL APPLICATIO
Double Terminated Cable Driver
Inverter Pulse Response
5V
3
+
7
6
75Ω
CABLE
LT1192
2
–
4
75Ω
100Ω
910Ω
–5V
–3dB BANDWIDTH = 55MHz
LT1192 • TA01
LT1192 • TA02
AV = – 5, CL = 10pF SCOPE PROBE
1
LT1192
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RATI GS
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ABSOLUTE
PACKAGE DESCRIPTIO
(Note 1)
Total Supply Voltage (V + to V –) ............................. 18V
Differential Input Voltage ........................................ ±6V
Input Voltage .......................................................... ±VS
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
ORDER PART
NUMBER
TOP VIEW
BAL 1
8
BAL
–IN 2
7
V+
+IN 3
6
OUT
V– 4
5
SHDN
N8 PACKAGE
8-LEAD PDIP
LT1192CN8
LT1192CS8
S8 PART MARKING
S8 PACKAGE
8-LEAD PLASTIC SO
1192
TJMAX = 150°C, θJA = 100°C/W (N8)
TJMAX = 150°C, θJA = 150°C/W (S8)
LT1192MJ8
LT1192CJ8
J8 PACKAGE 8-LEAD CERDIP
TJMAX = 150°C, θJA = 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
VS = ±5V, TA = 25°C, CL ≤ 10pF, Pin 5 open circuit unless otherwise noted.
PARAMETER
CONDITIONS
VOS
Input Offset Voltage
N8 Package
SO-8 Package
IOS
Input Offset Current
IB
Input Bias Current
en
Input Noise Voltage
fO = 10kHz
9
nV/√Hz
in
Input Noise Current
fO = 10kHz
4
pA/√Hz
RIN
Input Resistance
CIN
CMRR
MIN
LT1192M/C
TYP
MAX
SYMBOL
UNITS
0.2
2.5
3
mV
mV
0.2
1.7
µA
±0.5
±2.5
µA
Differential Mode
16
kΩ
Common Mode
5
MΩ
Input Capacitance
AV = 10
Input Voltage Range
(Note 3)
Common Mode Rejection Ratio
VCM = – 2.5V to 3.5V
1.8
–2.5
70
pF
3.5
85
V
dB
PSRR
Power Supply Rejection Ratio
VS = ±2.375V to ±8V
70
85
dB
AVOL
Large-Signal Voltage Gain
RL = 1k, VO = ±3V
RL = 100Ω, VO = ±3V
VS = ±8V, RL = 100Ω, VO = ±5V
100
16
20
180
35
60
V/mV
V/mV
V/mV
VOUT
Output Voltage Swing
VS = ±5V, RL = 1k
VS = ±8V, RL = 1k
±3.7
±6.7
±4
±7
V
V
SR
Slew Rate
AV = – 10, RL = 1k (Notes 4, 9)
325
450
V/µs
FPBW
Full-Power Bandwidth
VO = 6VP-P (Note 5)
17.2
23.9
MHz
GBW
Gain Bandwidth Product
350
MHz
tr1, t f1
Rise Time, Fall Time
AV = 50, VO = ±1.5V, 20% to 80% (Note 9)
tr2, t f2
Rise Time, Fall Time
AV = 5, VO = ±125mV, 10% to 90%
2.7
ns
tPD
Propagation Delay
AV = 5, VO = ±125mV, 50% to 50%
3.5
ns
Overshoot
AV = 5, VO = ±125mV
50
%
Settling Time
3V Step, 0.1% (Note 6)
90
ns
ts
2
23
35
50
ns
LT1192
ELECTRICAL CHARACTERISTICS
SYMBOL
VS = ±5V, TA = 25°C, CL ≤ 10pF, Pin 5 open circuit unless otherwise noted.
MIN
LT1192M/C
TYP
MAX
PARAMETER
CONDITIONS
Diff AV
Differential Gain
RL = 150Ω, AV = 10 (Note 7)
0.23
%
Diff Ph
Differential Phase
RL = 150Ω, AV = 10 (Note 7)
0.15
DegP-P
IS
Supply Current
32
UNITS
38
mA
1.3
2
mA
20
50
µA
Shutdown Supply Current
Pin 5 at
V–
Shutdown Pin Current
Pin 5 at V –
tON
Turn On Time
100
ns
tOFF
Turn Off Time
Pin 5 from V – to Ground, RL = 1k
Pin 5 from Ground to V –, RL = 1k
400
ns
ISHDN
VS+ = 5V, VS– = 0V, VCM = 2.5V, TA = 25°C, CL ≤ 10pF, Pin 5 open circuit unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
VOS
Input Offset Voltage
All Packages
IOS
Input Offset Current
IB
Input Bias Current
MIN
Input Voltage Range
(Note 3)
2
CMRR
Common Mode Rejection Ratio
VCM = 2V to 3.5V
60
AVOL
Large-Signal Voltage Gain
RL = 100Ω to Ground, VO = 1V to 3V
VOUT
Output Voltage Swing
RL = 100Ω to Ground
VOUT High
Slew Rate
GBW
Gain Bandwidth Product
IS
Supply Current
ISHDN
4
mV
0.2
1.2
µA
±0.5
±1.5
µA
3.5
V
dB
30
50
V/mV
3.6
3.8
V
0.25
AV = –5, VO = 1V to 3V
Shutdown Supply Current
Pin 5 at
Shutdown Pin Current
Pin 5 at V –
0.4
250
V/µs
350
MHz
29
V–
UNITS
0.4
80
VOUT Low
SR
LT1192M/C
TYP
MAX
36
mA
1.2
2
mA
20
50
µA
The ● denotes the specifications which apply over the full operating temperature range of – 55°C ≤ TA ≤ 125°C.
VS = ±5V, Pin 5 open circuit unless otherwise noted.
LT1192M
TYP
MAX
●
0.4
3.5
Input VOS Drift
●
2
IOS
Input Offset Current
●
0.2
2
µA
IB
Input Bias Current
●
±0.5
±2.5
µA
CMRR
Common Mode Rejection Ratio
SYMBOL
PARAMETER
CONDITIONS
VOS
Input Offset Voltage
N8 Package
∆VOS /∆T
MIN
VCM = – 2.5V to 3.5V
●
65
UNITS
mV
µV/°C
85
dB
PSRR
Power Supply Rejection Ratio
VS = ±2.375V to ±5V
●
70
90
dB
AVOL
Large-Signal Voltage Gain
RL = 1k, VO = ±3V
RL = 100Ω, VO = ±3V
●
●
55
5
90
14
V/mV
V/mV
VOUT
Output Voltage Swing
RL = 1k
●
±3.7
±3.9
IS
Supply Current
Shutdown Supply Current
ISHDN
Shutdown Pin Current
V
●
32
38
mA
Pin 5 at V – (Note 8)
●
1.5
2.5
mA
V–
●
20
Pin 5 at
µA
3
LT1192
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range of 0°C ≤ TA ≤ 70°C. VS = ±5V, Pin 5 open circuit unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
VOS
Input Offset Voltage
N8 Package
SO-8 Package
∆VOS /∆T
LT1191C
TYP
MAX
●
0.4
Input VOS Drift
●
2
IOS
Input Offset Current
●
0.2
1.7
µA
IB
Input Bias Current
●
±0.5
±2.5
µA
CMRR
Common Mode Rejection Ratio
VCM = – 2.5V to 3.5V
●
68
3
4
UNITS
mV
mV
µV/°C
85
dB
PSRR
Power Supply Rejection Ratio
VS = ± 2.375V to ±5V
●
70
90
dB
AVOL
Large-Signal Voltage Gain
RL = 1k, VO = ± 3V
RL = 100Ω, VO = ± 3V
●
●
90
10
140
30
V/mV
V/mV
VOUT
Output Voltage Swing
RL = 1k
●
±3.7
±3.9
IS
Supply Current
Shutdown Supply Current
ISHDN
Shutdown Pin Current
32
38
mA
Pin 5 at V – (Note 8)
●
1.4
2.1
mA
V–
●
20
Pin 5 at
Optional Offset Nulling Circuit
5V
3
7
+
6
LT1192
2
–
1
µA
Note 6: Settling time measurement techniques are shown in “Take the
Guesswork Out of Settling Time Measurements,” EDN, September 19,
1985. AV = –5, RL = 1k.
Note 7: NTSC (3.58MHz). For RL = 1k, Diff AV = 0.1%, Diff Ph = 0.01°.
Diff AV and Diff Ph can be reduced for AV < 10.
Note 8: See Applications section for shutdown at elevated temperatures.
Do not operate the shutdown above TJ > 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).
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/2πVP.
4
8
–5V
INPUT OFFSET VOLTAGE CAN BE ADJUSTED OVER A ±20mV
RANGE WITH A 1k Ω TO 10kΩ POTENTIOMETER
LT1192 • TA03
4
V
●
LT1192
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TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current
vs Temperature
4
–0.3
VS = ±5V
INPUT BIAS CURRENT (µA)
INPUT BIAS CURRENT (µA)
3
2
1
25°C
0
Common Mode Voltage
vs Supply Voltage
–55°C
125°C
–1
10
VS = ±5V
–0.4
+IB
–0.5
IOS
–0.6
–IB
–0.7
–55°C
25°C
8
COMMON MODE VOLTAGE (V)
Input Bias Current
vs Common Mode Voltage
6
+V COMMON MODE
4
125 °C
2
0
–2
–55°C
25°C
125°C
–4
–V COMMON MODE
–6
–8
–2
–3
1
3
–2 –1
0
2
COMMON MODE VOLTAGE (V)
4
–10
–25
50
0
25
75
TEMPERATURE (°C)
LT1192 • TPC01
200
150
100
50
0
100
10
1k
10k
FREQUENCY (Hz)
80
VS = ±5V
TA = 25°C
RS = 100k
40
20
0
VSHDN = –VEE + 0.4V
4.0
3.5
VSHDN = –VEE + 0.2V
2.5
2.0
VSHDN = –VEE
1.5
0
25
75
50
TEMPERATURE (°C)
100
125
LT1192 • TPC07
OPEN-LOOP VOLTAGE GAIN (V/V)
SHUTDOWN SUPPLY CURRENT (mA)
200k
4.5
–25
25°C
20
125°C
10
100
1k
10k
FREQUENCY (Hz)
100k
0
2
8
4
6
±SUPPLY VOLTAGE (V)
VS = ±5V
VO = ±3V
Open-Loop Voltage Gain
vs Load Resistance
200k
RL = 1k
150k
100k
50k
0
–50 –25
10
LT1192 • TPC06
Open-Loop Voltage Gain
vs Temperature
VS = ±5V
1.0
–50
–55°C
LT1192 • TPC05
Shutdown Supply Current
vs Temperature
3.0
30
0
10
LT1192 • TPC04
5.0
Supply Current vs Supply Voltage
60
100k
10
40
SUPPLY CURRENT (mA)
EQUIVALENT INPUT NOISE CURRENT (pA/√Hz)
EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz)
250
6
4
8
±V SUPPLY VOLTAGE (V)
LT1192 • TPC03
Equivalent Input Noise Current
vs Frequency
VS = ±5V
TA = 25°C
RS = 0Ω
2
0
125
LT1192 • TPC02
Equivalent Input Noise Voltage
vs Frequency
300
100
OPEN-LOOP VOLTAGE GAIN (V/V)
–4
–0.8
–50
RL = 100Ω
VS = ±5V
VO = ±3V
TA = 25°C
150k
100k
50k
0
25
75
0
50
TEMPERATURE (°C)
100
125
LT1192 • TPC08
10
100
LOAD RESISTANCE (Ω)
1000
LT1192 • TPC09
5
LT1192
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TYPICAL PERFOR A CE CHARACTERISTICS
Gain Bandwidth Product
vs Supply Voltage
Gain, Phase vs Frequency
60
60
40
40
GAIN
20
0
0
–20
100k
–20
1M
10M
100M
FREQUENCY (Hz)
TA = –55°C, 25°C, 125°C
320
300
280
0
2
4
8
6
±V SUPPLY VOLTAGE (V)
64
44
GAIN = 5 FREQUENCY
42
PHASE MARGIN
40
58
38
56
36
54
34
52
32
0
50
25
75
TEMPERATURE (°C)
100
COMMON MODE REJECTION RATIO (dB)
46
62
70
48
PHASE MARGIN (DEGREES)
GAIN = 5 FREQUENCY (MHz)
50
66
50
–50 –25
30
125
60
50
40
30
20
10M
100M
FREQUENCY (Hz)
10
100
80
60
+PSRR
40
–PSRR
20
1k
+VOUT, 25°C,
125°C, –55°C
4
2
0
–2
– VOUT, –55°C,
25°C, 125°C
–4
LT1192 • TPC16
6
100M
VS = ±5V
TA = –55°C
3
TA = 25°C
1
TA = 125°C
–1
TA = 125°C
–3
–8
125
10M
LT1192 • TPC15
5
TA = –55°C, 25°C
–10
100
100k
1M
FREQUENCY (Hz)
10k
Output Voltage Swing
vs Load Resistance
–6
50
0
25
75
TEMPERATURE (°C)
100M
VS = ±5V
VRIPPLE = ±300mV
TA = 25°C
80
1G
RL = 1k
8
OUTPUT SWING (V)
90
10M
LT1192 • TPC13
Output Swing vs Supply Voltage
VS = ± 5V
–25
100k
1M
FREQUENCY (Hz)
LT1192 • TPC14
6
70
–50
10k
0
10
1M
Output Short-Circuit Current
vs Temperature
OUTPUT SHORT-CIRCUIT CURRENT (mA)
1k
Power Supply Rejection Ratio
vs Frequency
VS = ±5V
TA = 25°C
RL = 1k
LT1192 • TPC12
100
10
Common Mode Rejection Ratio
vs Frequency
VS = ±5V
RL = 1k
60
AV = – 10
LT1192 • TPC11
Gain and Phase Margin
vs Temperature
68
0.1
0.001
240
LT1192 • TPC10
70
AV = –100
1
0.01
260
1G
VS = ±5V
TA = 25°C
10
340
POWER SUPPLY REJECTION RATIO (dB)
20
360
OUTPUT VOLTAGE SWING (V)
PHASE
100
OUTPUT IMPEDANCE (Ω )
VS = ±5V
TA = 25°C
RL = 1k
80
PHASE MARGIN (DEGREES)
VOLTAGE GAIN (dB)
80
Output Impedance vs Frequency
380
100
GAIN BANDWIDTH PRODUCT (MHz)
100
–5
0
2
8
4
6
±V SUPPLY VOLTAGE (V)
10
LT1192 • TPC17
10
100
LOAD RESISTANCE (Ω)
1000
LT1192 • TPC18
LT1192
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TYPICAL PERFOR A CE CHARACTERISTICS
Output Voltage Step
vs Settling Time, AV = – 5
VS = ±5V
TA = 25°C
RL = 1k
VO = ±2V
4
–SLEW RATE
OUTPUT VOLTAGE STEP (V)
SLEW RATE (V/µs)
600
500
+SLEW RATE
400
300
–50
Output Voltage Step
vs Settling Time, AV = 5
4
VS = ±5V
TA = 25°C
RL = 1k
2
OUTPUT VOLTAGE STEP (V)
Slew Rate vs Temperature
1mV
10mV
0
10mV
–2
1mV
–4
–25
0
25
50
75
TEMPERATURE (°C)
100
125
20
40
60
80 100 120
SETTLING TIME (ns)
140
160
2
1mV
10mV
0
10mV
–2
1mV
–4
50
100
150
SETTLING TIME (ns)
LT1192 • TPC20
LT1192 • TPC19
Large-Signal Transient Response
Small-Signal Transient Response
LT1192 • TPC22
AV = 5, SMALL-SIGNAL RISE TIME,
WITH FET PROBES
200
LT1192 • TPC21
Output Overload
LT1192 • TPC24
LT1192 • TPC23
AV = 5, CL = 10pF SCOPE PROBE
VS = ±5V
TA = 25°C
RL = 1k
AV = 10, VIN = 1.2VP-P
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APPLICATIO S I FOR ATIO
Power Supply Bypassing
No Supply Bypass Capacitors
The LT1192 is quite tolerant of power supply bypassing.
In some applications a 0.1µF ceramic disc capacitor
placed 1/2 inch from the amplifier is all that is required. A
scope photo of the amplifier output with no supply bypassing is used to demonstrate this bypassing tolerance,
RL = 1k.
In most applications, and those requiring good settling
time, it is important to use multiple bypass capacitors. A
0.1µF ceramic disc in parallel with a 4.7µF tantalum is
recommended. Two oscilloscope photos with different
bypass conditions are used to illustrate the settling time
characteristics of the amplifier. Note that although the
output waveform looks acceptable at 1V/DIV, when
LT1192 • TA04
AV = – 5, IN DEMO BOARD, RL = 1k
7
LT1192
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APPLICATIO S I FOR ATIO
Double Terminated Cable Driver
amplified to 1mV/DIV the settling time to 1mV is 4.132µs
for the 0.1µF bypass; the time drops to 140ns with multiple
bypass capacitors.
RG
Settling Time Poor Bypass
5V
3+
7
6
LT1192
2–
4
–5V
75Ω
RFB
CABLE
75Ω
Cable Driver Voltage Gain vs Frequency
24
VOUT
1V/DIV
VOUT
0V 1mV/DIV
0V
LT1192 • TA05
SETTLING TIME TO 1mV, AV = –1
SUPPLY BYPASS CAPACITORS = 0.1µF
CLOSED LOOP VOLTAGE GAIN (dB)
TA = 25°C
16
AV = +5
RFB = 910Ω
RG = 100Ω
12
8
4
0
100k
Settling Time Good Bypass
AV = +10
RFB = 910Ω
R G = 47Ω
20
1M
10M
100M
FREQUENCY (Hz)
LT1192 • TA07
VOUT
1V/DIV
0V
0V
VOUT
1mV/DIV
energy. The best performance can be obtained by double
termination (75Ω in series with the output of the amplifier, and 75Ω to ground at the other end of the cable). This
termination is preferred because reflected energy is
absorbed at each end of the cable. When using the double
termination technique it is important to note that the
signal is attenuated by a factor of 2, or 6dB. For a cable
driver with a gain of 5 (op amp gain of 10) the – 3dB
bandwidth is 56MHz with only 0.25dB of peaking.
LT1192 • TA06
SETTLING TIME TO 1mV, AV = –1
SUPPLY BYPASS CAPACITORS = 0.1µF + 4.7µF TANTALUM
Cable Terminations
The LT1192 operational amplifier has been optimized as a
low cost video cable driver. The ±50mA guaranteed output
current enables the LT1192 to easily deliver 7.5VP-P into
100Ω, while operating on ±5V supplies or 2.6VP-P on a
single 5V supply.
When driving a cable it is important to terminate the cable
to avoid unwanted reflections. This can be done in one of
two ways: single termination or double termination. With
single termination, the cable must be terminated at the
receiving end (75Ω to ground) to absorb unwanted
8
Using the Shutdown Feature
The LT1192 has a unique feature that allows the amplifier
to be shut down for conserving power or for multiplexing
several amplifiers onto a common cable. The amplifier will
shut down by taking Pin 5 to V–. In shutdown, the amplifier
dissipates 15mW while maintaining a true high impedance
output state of 15kΩ in parallel with the feedback resistors. The amplifiers must be used in a noninverting configuration for MUX applications. In inverting configurations the input signal is fed to the output through the
feedback components. When the output is loaded with as
little as 1kΩ from the amplifier’s feedback resistors, the
amplifier shuts off in 400ns. This shutoff can be under the
control of HC CMOS operating between 0V and – 5V.
LT1192
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APPLICATIO S I FOR ATIO
Small-Signal Transient Response
Output Shutdown
0V
VSHDN
– 5V
VOUT
LT1192 • TA08
LT1192 • TA09
1MHz SINE WAVE GATED OFF WITH
SHUTDOWN PIN, AV = 10, RL = 1k
AV = 10, SMALL-SIGNAL RISE TIME, WITH FET PROBES
The ability to maintain shutoff is shown on the curve
Shutdown Supply Current vs Temperature in the Typical
Performance Characteristics section. At very high
elevated temperatures it is important to hold the SHDN pin
close to the negative supply to keep the supply current
from increasing.
Closed-Loop Voltage Gain vs Frequency
When using decompensated amplifiers it should be realized that peaking in the frequency domain, and overshoot
and ringing in the time domain occur as closed-loop gain
is lowered. The LT1192 is stable to a closed-loop gain of
5, however, peaking and ringing can be minimized by
increasing the closed-loop gain. For instance, the LT1192
peaks 5dB when used in a gain of 5, but peaks by less than
0.5dB for a closed-loop gain of 10. Likewise, the overshoot
drops from 50% to 4% for gains of 10.
Murphy Circuits
There are several precautions the user should take when
using the LT1192 in order to realize its full capability.
Although the LT1192 can drive a 50pF load, isolating the
capacitance with 20Ω can be helpful. Precautions primarily have to do with driving large capacitive loads.
CLOSED-LOOP VOLTAGE GAIN (dB)
Operating with Low Closed-Loop Gains
24
22
20
AV = 10
18
16
14
AV = 5
12
10
100k
1M
10M
100M
FREQUENCY (Hz)
1G
LT1192 • TA10
Other precautions include:
1. Use a ground plane (see Design Note 50, High Frequency Amplifier Evaluation Board).
2. Do not use high source impedances. The input capacitance of 2pF, and RS = 10k for instance, will give an
8MHz – 3dB bandwidth.
3. PC board socket may reduce stability.
4. A feedback resistor of 1k or lower reduces the effects of
stray capacitance at the inverting input.
9
LT1192
U
W
U U
APPLICATIO S I FOR ATIO
Driving Capacitive Load
Driving Capacitive Load
LT1192 • TA11
LT1192 • TA12
AV = –5, IN DEMO BOARD, CL = 50pF
AV = –5, IN DEMO BOARD, CL = 50pF
WITH 20Ω ISOLATING RESISTOR
Murphy Circuits
5V
3
+
5V
6
LT1192
2
3
7
–
+
COAX
7
6
LT1192
2
4
–
–5V
4
–5V
An Unterminated Cable Is
a Large Capacitive Load
1X SCOPE
PROBE
A 1X Scope Probe Is a
Large Capacitive Load
5V
3
+
7
6
LT1192
2
–
+
LT1192
4
–
–5V
SCOPE
PROBE
LT1192 • TA13
A Scope Probe on the Inverting
Input Reduces Phase Margin
10
LT1192 Is Stable for Gains ≥ 5V/V
LT1192
W
W
SI PLIFIED SCHE ATIC
7 V+
VBIAS
VBIAS
CM
+
3
–
2
CFF
+V
6 VOUT
+V
*
4 V–
LT1191 • TA14
5
1
8
SHDN
BAL
BAL
*SUBSTRATE DIODE, DO NOT FORWARD BIAS
U
PACKAGE DESCRIPTIO
J8 Package
8-Lead CERDIP (Narrow .300 Inch, Hermetic)
(Reference LTC DWG # 05-08-1110)
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.300 BSC
(0.762 BSC)
0.200
(5.080)
MAX
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
0.015 – 0.060
(0.381 – 1.524)
0.008 – 0.018
(0.203 – 0.457)
0.005
(0.127)
MIN
0.405
(10.287)
MAX
8
7
6
5
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
0° – 15°
1
0.045 – 0.065
(1.143 – 1.651)
0.014 – 0.026
(0.360 – 0.660)
0.100
(2.54)
BSC
2
3
4
J8 1298
0.125
3.175
MIN
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
OBSOLETE PACKAGE
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
LT1192
U
PACKAGE DESCRIPTIO
N8 Package
8-Lead PDIP (Narrow .300 Inch)
(Reference LTC DWG # 05-08-1510)
0.300 – 0.325
(7.620 – 8.255)
0.009 – 0.015
(0.229 – 0.381)
(
0.045 – 0.065
(1.143 – 1.651)
+0.889
–0.381
0.130 ± 0.005
(3.302 ± 0.127)
0.065
(1.651)
TYP
8
7
6
5
1
2
3
4
0.255 ± 0.015*
(6.477 ± 0.381)
+0.035
0.325 –0.015
8.255
0.400*
(10.160)
MAX
)
0.125
(3.175) 0.020
MIN (0.508)
MIN
0.018 ± 0.003
0.100
(2.54)
BSC
N8 1098
(0.457 ± 0.076)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
0.010 – 0.020
× 45°
(0.254 – 0.508)
0.008 – 0.010
(0.203 – 0.254)
0.053 – 0.069
(1.346 – 1.752)
0°– 8° TYP
0.016 – 0.050
(0.406 – 1.270)
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
8
7
6
5
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
0.150 – 0.157**
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
SO8 1298
1
2
3
4
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1221
High Speed Operational Amplifier
150MHz Gain Bandwidth, 200V/µs Slew Rate, en = 6nV/√Hz
LT1222
High Speed Operational Amplifier
500MHz Gain Bandwidth, 200V/µs Slew Rate, en = 3nV/√Hz
LT1225
High Speed Operational Amplifier
150MHz Gain Bandwidth, 400V/µs Slew Rate, IS = 7mA
12
Linear Technology Corporation
1192fa LT/CP 0801 1.5K REV A • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 1991