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LTC1047

Description
OP-AMP
Categorysemiconductor    Analog mixed-signal IC   
File Size153KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1047 Overview

OP-AMP

LTC1047 Parametric

Parameter NameAttribute value
stateActive
Amplifier typeOPERATIONAL AMPLIFIER
sub_categoryOperational Amplifier
LTC1047
Dual Micropower
Zero-Drift Operational Amplifier
with Internal Capacitors
DESCRIPTIO
The LTC
®
1047 is a micropower, high performance
dual zero-drift operational amplifier. The sample-and-hold
capacitors usually required by other chopper amplifiers
are integrated on-chip, minimizing the need for external
components.
The LTC1047 has a typical offset voltage of 3µV, drift
of 10nV/°C, input noise voltage typically 3.5µV
P-P
,
and typical voltage gain of 150dB. The common mode
rejection is 110dB minimum, with minimum power supply
rejection of 105dB. The LTC1047 also offers a 0.2V/µs
slew rate and a gain bandwidth product of 200kHz. Over-
load recovery time from saturation is 70ms, four times
faster than chopper amplifiers with external capacitors.
The LTC1047 is available in a standard plastic 8-pin PDIP
as well as a 16-pin SW package. The LTC1047 is a plug-in
replacement for most dual op amps with improved DC
performance and substantial power savings.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
No External Components Required
Maximum Offset Voltage: 10
µ
V
Maximum Offset Voltage Drift: 50nV/
°
C
Supply Current: 80µA
Minimum CMRR: 110dB
Minimum PSRR: 105dB
Single Supply Operation: 4.75V to 16V
Common Mode Range Includes GND
Output Swings to GND
Typical Overload Recovery Time: 70ms
Pin Compatible with Industry Standard Dual
Op Amps
APPLICATIO S
Thermocouple Amplifiers
Electronic Scales
Battery Powered Instrumentation
Strain Gauge Amplifiers
Remote Located Sensors
TYPICAL APPLICATIO
5V
4
1/2 LTC1043
–IN
18
3
C
S
1µF
2
+IN
6
16
0.1µF
17
5
C
H
1µF
15
100Ω
Micropower Single Supply Instrumentation Amplifier
140
120
100k
5V
6
C
S
= C
H
= 1µF
100
CMRR (dB)
80
60
1/2
LTC1047
7
V
OUT
5
+
40
20
100
4
GAIN = 1000
CMRR > = 120dB AT 60Hz
V
OS
= < 10µV
I
S
= 62µA (INCLUDING THE LTC1043)
LTC1047 • TA01
1k
10k
100k
FREQUENCY OF COMMON MODE SIGNAL
LT1047 • TA02
U
U
U
CMRR vs Frequency
1047fa
1

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