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LT1792AIN8#PBF

P1-P3P4-P6P7-P9P10-P12
1
LT1792
Low Noise, Precision,
JFET Input Op Amp
The LT
®
1792 achieves a new standard of excellence in
noise performance for a JFET op amp. The 4.2nV/√Hz
voltage noise combined with low current noise and
picoampere bias currents make the LT1792 an ideal choice
for amplifying low level signals from high impedance
capacitive transducers.
The LT1792 is unconditionally stable for gains of 1 or more,
even with load capacitances up to 1000pF. Other key
features are 600µV V
OS
and a voltage gain of over 4 million.
Each individual amplifier is 100% tested for voltage noise,
slew rate and gain bandwidth.
The design of the LT1792 has been optimized to achieve
true precision performance with an industry standard
pinout in the SO-8 package. Specifications are also pro-
vided for ±5V supplies.
■
100% Tested Low Voltage Noise: 6nV/√Hz Max
■
A Grade 100% Temperature Tested
■
Voltage Gain: 1.2 Million Min
■
Offset Voltage Over Temp: 800µV Max
■
Gain-Bandwidth Product: 5.6MHz Typ
■
Guaranteed Specifications with ±5V Supplies
, LTC and LT are registered trademarks of Linear Technology Corporation.
Low Noise Hydrophone Amplifier with DC Servo
–
+
–
+
7
4
5V TO 15V
6
2
3
–5V TO –15V
C2
0.47µF
2
3
6
R8
100M
R6
100k
R4
1M
R5
1M
LT1792
LT1097
R3
3.9k
C1*
R1*
100M
R7
1M
R2
200Ω
C
T
HYDRO-
PHONE
OUTPUT
DC OUTPUT ≤ 2.5mV FOR T
A
< 70°C
OUTPUT VOLTAGE NOISE = 128nV/√Hz AT 1kHz (GAIN = 20)
C1 ≈ C
T
≈ 100pF TO 5000pF; R4C2 > R8C
T
; *OPTIONAL
1792 TA01
INPUT VOLTAGE NOISE (nV/√Hz)
3.6
PERCENT OF UNITS (%)
40
30
20
10
0
4.0
4.4
4.6 5.6
1792 TA02
3.8 4.2
4.8
5.0
5.2
5.4
V
S
= ±15V
T
A
= 25°C
270 OP AMPS TESTED
1kHz Input Noise Voltage Distribution
■
Photocurrent Amplifiers
■
Hydrophone Amplifiers
■
High Sensitivity Piezoelectric Accelerometers
■
Low Voltage and Current Noise Instrumentation
Amplifier Front Ends
■
Two and Three Op Amp Instrumentation Amplifiers
■
Active Filters
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LT1792
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
(Note 1)
Supply Voltage ..................................................... ±20V
Differential Input Voltage ...................................... ±40V
Input Voltage (Equal to Supply Voltage)............... ±20V
Output Short-Circuit Duration ........................ Indefinite
Operating Temperature Range............... –40°C to 85°C
Specified Temperature Range
Commercial (Note 8) ......................... –40°C to 85°C
Industrial ........................................... –40°C to 85°C
Storage Temperature Range................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................ 300°C
1792AI
1792I
ORDER PART
NUMBER
T
JMAX
= 160°C, θ
JA
= 190°C/WT
JMAX
= 140°C, θ
JA
= 130°C/W
1
2
3
4
8
7
6
5
TOP VIEW
N8 PACKAGE
8-LEAD PDIP
A
V
OS
ADJ
–IN A
+IN A
V
–
NC
V
+
OUT
V
OS
ADJ
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
V
OS
ADJ
–IN A
+IN A
V
–
NC
V+
OUT
V
OS
ADJ
A
ORDER PART
NUMBER
S8 PART MARKING
Consult factory for Military grade parts.
WU
U
PACKAGE
/
O
RDER I FOR ATIO
LT1792ACN8
LT1792CN8
LT1792AIN8
LT1792IN8
LT1792ACS8
LT1792CS8
LT1792AIS8
LT1792IS8
E
LECTR
IC
AL C CHARA TERIST
ICS
T
A
= 25°C, V
S
= ±15V, V
CM
= 0V, unless otherwise noted. (Note 9)
LT1792C/LT1792I
SYMBOL PARAMETER CONDITIONS (Note 2) MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage 0.2 0.6 0.2 0.8 mV
V
S
= ±5V 0.4 1.0 0.4 1.3 mV
I
OS
Input Offset Current Warmed Up (Note 3) 100 400 100 400 pA
I
B
Input Bias Current Warmed Up (Note 3) 300 800 300 800 pA
e
n
Input Noise Voltage 0.1Hz to 10Hz 2.4 2.4 µV
P-P
Input Noise Voltage Density f
O
= 10Hz 8.3 8.3 nV/√Hz
f
O
= 1000Hz 4.2 6.0 4.2 6.0 nV/√Hz
i
n
Input Noise Current Density f
O
= 10Hz, f
O
= 1000Hz (Note 4) 10 10 fA/√Hz
R
IN
Input Resistance
Differential Mode 10
11
10
11
Ω
Common Mode V
CM
= –10V to 8V 10
11
10
11
Ω
V
CM
= 8V to 11V 10
10
10
10
Ω
C
IN
Input Capacitance 14 14 pF
V
S
= ±5V 27 27 pF
V
CM
Input Voltage Range (Note 5) 13.0 13.5 13.0 13.5 V
–10.5 –11.0 –10.5 –11.0 V
CMRR Common Mode Rejection Ratio V
CM
= –10V to 13V 85 105 82 100 dB
PSRR Power Supply Rejection Ratio V
S
= ±4.5V to ±20V 88 105 83 98 dB
1792A
1792
LT1792AC/LT1792AI
3
LT1792
E
LECTR
IC
AL C CHARA TERIST
ICS
T
A
= 25°C, V
S
= ±15V, V
CM
= 0V, unless otherwise noted.
LT1792C/LT1792I
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
A
VOL
Large-Signal Voltage Gain V
O
= ±12V, R
L
= 10k 1200 4800 1000 4500 V/mV
V
O
= ±10V, R
L
= 1k 600 4000 500 3000 V/mV
V
OUT
Output Voltage Swing R
L
= 10k ±13.0 ±13.2 ±13.0 ±13.2 V
R
L
= 1k ±12.0 ±12.3 ±12.0 ±12.3 V
SR Slew Rate R
L
≥ 2k (Note 7) 2.3 3.4 2.3 3.4 V/µs
GBW Gain-Bandwidth Product f
O
= 100kHz 4.0 5.6 4.0 5.6 MHz
I
S
Supply Current 4.2 5.20 4.2 5.20 mA
V
S
= ±5V 4.2 5.15 4.2 5.15 mA
Offset Voltage R
POT
(to V
EE
) = 10k 10 10 mV
Adjustment Range
The ● denotes specifications which apply over the temperature range 0°C ≤ T
A
≤ 70°C. V
S
= ±15V, V
CM
= 0V,
unless otherwise noted. (Note 9)
LT1792AC LT1792C
SYMBOL PARAMETER CONDITIONS (Note 2) MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage ● 0.4 0.8 0.8 2.7 mV
V
S
= ±5V ● 0.6 1.2 1.2 3.2 mV
∆V
OS
Average Input Offset (Note 6) ● 410 740 µV/°C
∆Temp
Voltage Drift
I
OS
Input Offset Current ● 180 500 180 500 pA
I
B
Input Bias Current ● 500 1800 500 1800 pA
V
CM
Input Voltage Range ● 12.9 13.4 12.9 13.4 V
● –10.0 –10.8 –10.0 –10.8 V
CMRR Common Mode Rejection Ratio V
CM
= –10V to 12.9V ● 81 104 79 99 dB
PSRR Power Supply Rejection Ratio V
S
= ±4.5V to ±20V ● 85 99 81 97 dB
A
VOL
Large-Signal Voltage Gain V
O
= ±12V, R
L
= 10k ● 900 3600 800 3400 V/mV
V
O
= ±10V, R
L
= 1k ● 500 2600 400 2400 V/mV
V
OUT
Output Voltage Swing R
L
= 10k ● ±12.9 ±13.2 ±12.9 ±13.2 V
R
L
= 1k ● ±11.9 ±12.15 ±11.9 ±12.15 V
SR Slew Rate R
L
≥ 2k (Note 7) ● 2.1 3.1 2.1 3.1 V/µs
GBW Gain-Bandwidth Product f
O
= 100kHz ● 3.2 4.5 3.2 4.5 MHz
I
S
Supply Current ● 4.2 5.30 4.2 5.30 mA
V
S
= ±5V ● 4.2 5.25 4.2 5.25 mA
LT1792AC/LT1792AI
P1-P3P4-P6P7-P9P10-P12

LT1792AIN8#PBF

Mfr. #:
Buy LT1792AIN8#PBF
Manufacturer:
Analog Devices Inc.
Description:
Precision Amplifiers L N, Prec, JFET In Op Amp
Lifecycle:
New from this manufacturer.
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