1

LT1113

The LT

performance for a dual JFET op amp. The 4.5nV/

√Hz 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-

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

±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.

Dual Low Noise,

Precision, JFET Input Op Amps

s

100% Tested Low Voltage Noise: 6nV/

√Hz Max

s

SO-8 Package Standard Pinout

s

Voltage Gain: 1.2 Million Min

s

Offset Voltage: 1.5mV Max

s

Offset Voltage Drift: 15

µV/°C Max

s

Input Bias Current, Warmed Up: 450pA Max

s

Gain Bandwidth Product: 5.6MHz Typ

s

Guaranteed Specifications with

±5V Supplies

s

Guaranteed Matching Specifications

s

Photocurrent Amplifiers

s

Hydrophone Amplifiers

s

High Sensitivity Piezoelectric Accelerometers

s

Low Voltage and Current Noise Instrumentation

Amplifier Front Ends

s

Two and Three Op Amp Instrumentation Amplifiers

s

Active Filters

Low Noise Hydrophone Amplifier with DC Servo

1kHz Input Noise Voltage Distribution

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

, LTC and LT are registered trademarks of Linear Technology Corporation.

8

4

5V TO 15V

1

2

3

–5V TO –15V

C2

0.47

µF

6

5

7

R8

100M

R6

100k

R4

1M

R5

1M

1/2

LT1113

1/2

LT1113

R3

3.9k

C1*

R1*

100M

R7

1M

R2

200

Ω

HYDRO-

PHONE

OUTPUT

DC OUTPUT

OUTPUT VOLTAGE NOISE = 128nV/

√Hz AT 1kHz (GAIN = 20)

C1

1113 TA01

INPUT VOLTAGE NOISE (nV/

√Hz)

3.8

40

30

20

10

0

4.2

4.6 4.8

5.8

1113 TA02

4.0

4.4

5.0 5.2 5.4 5.6

138 S8

276 OP AMPS TESTED