LT1113C View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LT1113C

Dual Low Noise, Precision, JFET Input Op Amps

Linear Technology 

LT1113

TYPICAL APPLICATI

S

Low Noise Light Sensor with DC Servo

C1

2pF

R1

1M

2–

D2

1N914

1

1/2 LT1113

3+

C2

0.022µF

CD

2N3904

+V

R2

D1

1N914

R3

1k

7

8

6

100k

1/2 LT1113

5

HAMAMATSU

S1336-5BK

R5

1k

V–

R4

4

1k

–V

R2C2 > C1R1

CD = PARASITIC PHOTODIODE CAPACITANCE

VO = 100mV/µWATT FOR 200nm WAVE LENGTH

330mV/µWATT FOR 633nm WAVE LENGTH

OUTPUT

1113 • TA05

10Hz Fourth Order Chebyshev Lowpass Filter (0.01dB Ripple)

R1

237k

VIN

R2

237k

C1

33nF

R3

249k

C2

100nF

15V

2– 8

1

1/2 LT1113

3+

4

–15V

R5

154k

C3

10nF

R4

R6

154k

249k 6 –

C4

330nF

7

1/2 LT1113

5+

VOUT

TYPICAL OFFSET ≈ 0.8mV

1% TOLERANCES

FOR VIN = 10VP-P, VOUT = –121dB AT f > 330Hz

= – 6dB AT f = 16.3Hz

LOWER RESISTOR VALUES WILL RESULT IN LOWER THERMAL NOISE AND LARGER CAPACITORS

1113 • TA06

14

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