LT1190
Ultrahigh Speed
Operational Amplifier
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Gain Bandwidth Product, A
V
= 1: 50MHz
Slew Rate: 450V/µs
Low Cost
Output Current:
±50mA
Settling Time: 140ns to 0.1%
Differential Gain Error: 0.1%, (R
L
= 1k)
Differential Phase Error: 0.06°, (R
L
= 1k)
High Open-Loop Gain: 10V/mV Min
Single Supply 5V Operation
Output Shutdown
The LT
®
1190 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 85dB, 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 LT1190 features a unity-
gain-stable bandwidth of 50MHz and a 75° phase margin,
making it extremely easy to use.
Because the LT1190 is a true operational amplifier, it is an
ideal choice for wideband signal conditioning, fast inte-
grators, active filters, and applications requiring speed,
accuracy and low cost.
The LT1190 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
Fast Integrators
Pulse Amplifiers
D/A Current to Voltage Conversion
TYPICAL APPLICATIO
5V
7
V
IN1
3
Video MUX Cable Driver
+
–
LT1190
SHDN
5
4
–5V
1k
6
Inverter Pulse Response
2
CMOS IN
CH. SELECT
1k
1k
75Ω CABLE
75Ω
–5V
5V
V
IN2
3
5
74HC04
1k
74HC04
+
SHDN
LT1190
7
6
4
–5V
LT1190 • TA01
2
–
1k
A
V
= – 1, C
L
= 10pF SCOPE PROBE
1k
U
1190 TA02
U
U
1
LT1190
ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
BAL 1
–IN 2
+IN 3
V
–
4
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
Maximum Junction Temperature ......................... 150°C
Operating Temperature Range
LT1190M
(OBSOLETE) .............
–55°C to 125°C
LT1190C ............................................... 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
LT1190CN8
LT1190CS8
S8 PART MARKING
1190
LT1190MJ8
LT1190CJ8
N8 PACKAGE
8-LEAD PDIP
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 PARAMETER
V
OS
I
OS
I
B
e
n
i
n
R
IN
C
IN
CMRR
PSRR
A
VOL
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
= 1
(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
LT1190M/C
TYP
MAX
3
0.2
±0.5
50
4
130
5
2.2
– 2.5
60
60
10
2.5
3.5
±3.7
±6.7
325
17.2
175
70
70
22
6
12
±4
±7
450
23.9
50
250
1.9
2.4
5
140
325
3.5
10
15
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
= –1, 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
= 1, V
O
=
±
125mV, 10% to 90%
A
V
= 1, V
O
=
±
125mV, 50% to 50%
A
V
= 1, 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
W
U
U
W W
W
LT1190
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.
LT1190M/C
MIN
TYP
0.35
0.16
32
38
2
50
1.3
20
100
400
MAX
UNITS
%
Deg
P-P
mA
mA
µA
ns
ns
CONDITIONS
R
L
= 150Ω, A
V
= 2 (Note 7)
R
L
= 150Ω, A
V
= 2 (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
–
24.5
(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
= –1, V
O
= 1V to 3V
V
OUT
High
V
OUT
Low
2
55
2.5
3.6
70
7
3.8
0.25
250
47
29
1.2
20
36
2
50
0.4
CONDITIONS
N8 Package
SO-8 Package
MIN
LT1190M/C
TYP
MAX
3
0.2
±0.5
11
15
1.2
±1.5
3.5
UNITS
mV
mV
µA
µA
V
dB
V/mV
V
V
V/µs
MHz
mA
mA
µA
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
LT1190M
TYP
5
16
0.2
±0.5
MAX
14
2
±2.5
UNITS
mV
µV/°C
µA
µA
dB
dB
V/mV
V/mV
V
55
55
8
1
±3.7
70
70
16
2.5
±3.9
32
1.5
20
38
2.5
mA
mA
µA
3
LT1190
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
LT1190C
TYP
3
16
0.2
±0.5
MAX
11
18
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
58
58
9
2
±3.7
70
70
20
6
±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
±
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
= –1, R
L
= 1k.
Note 7:
NTSC (3.58MHz). For R
L
= 1k, Diff A
V
= 0.1%, Diff Ph = 0.06°.
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
LT1190
6
4
8
–5V
2
INPUT OFFSET VOLTAGE CAN BE ADJUSTED OVER A
±150mV
RANGE WITH A 1kΩ TO 10kΩ POTENTIOMETER
LT1190 • TA03
4
LT1190
TYPICAL PERFOR A CE CHARACTERISTICS
Input Bias Current
vs Common Mode Voltage
4
3
V
S
=
±5V
–0.3
COMMON MODE VOLTAGE (V)
INPUT BIAS CURRENT (µA)
INPUT BIAS CURRENT (µA)
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)
1800
1600
1400
1200
1000
800
600
400
200
0
10
100
V
S
=
±5V
T
A
= 25°C
R
S
= 0Ω
EQUIVALENT INPUT NOISE CURRENT (pA/
√
Hz)
2000
SUPPLY CURRENT (mA)
1k
10k
FREQUENCY (Hz)
Shutdown Supply Current
vs Temperature
5.0
SHUTDOWN SUPPLY CURRENT (mA)
4.5
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
V
SHDN
= –V
EE
+ 0.4V
V
S
=
±5V
30k
OPEN-LOOP VOLTAGE GAIN (V/V)
R
L
= 1k
20k
OPEN-LOOP VOLTAGE GAIN (V/V)
U W
LT1190 • TPC01
LT1190 • 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
–0.4
+I
B
–0.5
I
OS
–0.6
–I
B
–0.7
–V COMMON MODE
–55°C
25°C
125°C
0
2
6
4
8
±V
SUPPLY VOLTAGE (V)
10
LT1190 • TPC02
LT1190 • 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
40
20
125°C
25°C
10
20
0
10
100
1k
10k
FREQUENCY (Hz)
100k
0
0
2
8
4
6
±SUPPLY
VOLTAGE (V)
10
100k
LT1190 • TPC04
LT1190 • TPC05
LT1190 • TPC06
Open-Loop Voltage Gain
vs Temperature
V
S
=
±
5V
V
O
=
±
3V
30k
Open-Loop Voltage Gain
vs Load Resistance
V
S
=
±
5V
V
O
=
±3V
20k
10k
R
L
= 100Ω
10k
0
–50
0
–25
50
0
25
75
TEMPERATURE (°C)
100
125
10
100
LOAD RESISTANCE (Ω)
1000
LT1190 • TPC09
LT1190 • TPC08
5
嵌入式系统
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