LT1113
Dual Low Noise,
Precision, JFET Input Op Amps
FEATURES
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DESCRIPTIO
100% Tested Low Voltage Noise: 6nV/鈭欻z Max
SO-8 Package Standard Pinout
Voltage Gain: 1.2 Million Min
Offset Voltage: 1.5mV Max
Offset Voltage Drift: 15碌V/擄C Max
Input Bias Current, Warmed Up: 450pA Max
Gain Bandwidth Product: 5.6MHz Typ
Guaranteed Specifications with
鹵5V
Supplies
Guaranteed Matching Specifications
The LT
廬
1113 achieves a new standard of excellence in noise
performance for a dual JFET op amp. The 4.5nV/鈭欻z 1kHz
noise combined with low current noise and picoampere
bias currents makes the LT1113 an ideal choice for ampli-
fying low level signals from high impedance capacitive
transducers.
The LT1113 is unconditionally stable for gains of 1 or more,
even with load capacitances up to 1000pF. Other key fea-
tures are 0.4mV V
OS
and a voltage gain of 4 million. Each
individual amplifier is 100% tested for voltage noise, slew
rate and gain bandwidth.
The design of the LT1113 has been optimized to achieve
true precision performance with an industry standard
pinout in the S0-8 package. A set of specifications are
provided for
鹵5V
supplies and a full set of matching speci-
fications are provided to facilitate the use of the LT1113 in
matching dependent applications such as instrumenta-
tion amplifier front ends.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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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
TYPICAL APPLICATIO
5V TO 15V
Low Noise Hydrophone Amplifier with DC Servo
R3
3.9k
1kHz Input Noise Voltage Distribution
V
S
=
鹵15V
T
A
= 25擄C
138 S8
276 OP AMPS TESTED
R2 C1*
200鈩?/div>
鈥?V TO 鈥?5V
C
T
HYDRO-
PHONE
R6
100k
7
1/2
LT1113
R7
1M
DC OUTPUT
鈮?/div>
2.5mV FOR T
A
< 70擄C
OUTPUT VOLTAGE NOISE = 128nV/鈭欻z AT 1kHz (GAIN = 20)
C1
鈮?/div>
C
T
鈮?/div>
100pF TO 5000pF; R4C2 > R8C
T
; *OPTIONAL
鈥?/div>
R8
100M
+
+
3
1/2
LT1113
4
1
C2
0.47碌F
R4
1M
R5
1M
OUTPUT
PERCENT OF UNITS (%)
鈥?/div>
R1*
100M
40
2
8
30
20
6
10
5
0
3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 5.8
INPUT VOLTAGE NOISE (nV/鈭欻z)
1113 TA02
1113 TA01
U
U
U
1
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