LT1457S8#TR Linear Technology, LT1457S8#TR Datasheet

IC OPAMP JFET PREC DUAL 8SOIC

LT1457S8#TR

Manufacturer Part Number
LT1457S8#TR
Description
IC OPAMP JFET PREC DUAL 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1457S8#TR

Amplifier Type
J-FET
Number Of Circuits
2
Slew Rate
4 V/µs
Gain Bandwidth Product
1.7MHz
Current - Input Bias
7pA
Voltage - Input Offset
220µV
Current - Supply
1.8mA
Voltage - Supply, Single/dual (±)
±4.5 V ~ 18 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Output Type
-
Current - Output / Channel
-
-3db Bandwidth
-

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APPLICATIONS
FEATURES
TYPICAL PERFORMANCE CHARACTERISTICS
Sample-and-Hold (Drives Large Hold Capacitors)
A/D and D/A Converters
Photodiode Amplifiers
Voltage-to-Frequency Converters
Handles 10,000pF Capacitive Load
450 V Max Offset Voltage
1200 V Max Offset Voltage in S8 Package
50pA Bias Current at 70 C
13nV/ Hz Voltage Noise
4V/ s Slew Rate
4 V/ C Drift
130dB Channel Separation
100
80
60
40
20
0
0.1
V
T
A
A
S
V
Capacitive Load Handling
= 25 C
= ±15V
= +1
U
CAPACITIVE LOAD (nF)
1
W
10
U
LT11457• TA01
100
DESCRIPTION
The LT1457 is a dual, JFET input op amp optimized for
handling large capacitive loads in combination with preci-
sion performance.
Precision specifications include 220 V offset voltage in
plastic and surface mount packages. At 70 C input bias
current is 50pA, input offset current is 20pA. Channel
separation is 130dB.
Other dual JFET input op amps from Linear Technology
include the LT1057, which is three times faster than the
LT1457 but at the expense of significantly lower capacitive
load handling capability; and the LT1113 with 4.5nV/ Hz
voltage noise.
21
18
15
12
9
6
3
0
–1.0
Input Offset Voltage Distribution
–0.8
JFET Input Op Amp
V
T
S
A
= 15V
= 25 C
–0.6
INPUT OFFSET VOLTAGE (mV)
U
–0.4
S8 Package
–0.2
Dual, Precision
0
0.2
400 DUALS
(800 OP AMPS)
TESTED FROM
3 RUNS
0.4
0.6
LT1457 • TA02
0.8
1.0
LT1457
1

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LT1457S8#TR Summary of contents

Page 1

... input bias current is 50pA, input offset current is 20pA. Channel separation is 130dB. Other dual JFET input op amps from Linear Technology include the LT1057, which is three times faster than the LT1457 but at the expense of significantly lower capacitive load handling capability; and the LT1113 with 4.5nV/ Hz voltage noise ...

Page 2

LT1457 ABSOLUTE MAXIMUM Supply Voltage ...................................................... 20V Differential Input Voltage ....................................... 40V Input Voltage .......................... Equal to Supply Voltages Output Short-Circuit Duration .......................... Indefinite Operating Temperature Range ................ – Storage Temperature Range ...

Page 3

ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER GBW Gain-Bandwidth Product I Supply Current Per Amplifier S Channel Separation ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER V Input Offset Voltage OS Average Temperature Coefficient of Input Offset Voltage (Note 4) I Input Offset Current OS I Input ...

Page 4

LT1457 W U TYPICAL PERFORMANCE CHARACTERISTICS Input Bias and Offset Current vs Temperature 1000 V = ±15V 300 WARMED UP 100 BIAS CURRENT 30 10 OFFSET CURRENT 100 AMBIENT TEMPERATURE ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS Common-Mode Rejection Ratio vs Frequency 120 V = ±15V 100 100 1k 10k 100k 1M 10M FREQUENCY (Hz) LT1457• TPC10 Slew Rate, Gain-Bandwidth ...

Page 6

LT1457 W U TYPICAL PERFORMANCE CHARACTERISTICS Large-Signal Response 100pF V L LT1457 TPC19 U U APPLICATIONS INFORMATION Phase Reversal Protection Most industry standard JFET input single, dual, and quad op amps (e.g., LF156, LF351, LF353, ...

Page 7

... TYP 0.406 – 1.270 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. W ...

Page 8

... Linear Technology Corporation Rm. 801, No. 46, Sec. 2 Chung Shan N. Rd. Taipei, Taiwan, R.O.C. Phone: 886-2-521-7575 FAX: 886-2-562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. The Coliseum, Riverside Way Camberley, Surrey GU15 3YL United Kingdom Phone: 44-276-677676 FAX: 44-276-64851 0294 LT/GP 0594 10K • PRINTED IN USA ...

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