lt1002amj Linear Technology Corporation, lt1002amj Datasheet

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lt1002amj

Manufacturer Part Number
lt1002amj
Description
Dual, Matched Precision Operational Amplifier
Manufacturer
Linear Technology Corporation
Datasheet

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Part Number:
lt1002amj/883
Quantity:
800
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
, LTC and LT are registered trademarks of Linear Technology Corporation
Guaranteed low offset voltage
Guaranteed offset voltage match
Guaranteed low drift
Guaranteed CMRR
Guaranteed channel separation
Guaranteed matching characteristics
Low noise 0.35 V
Thermocouple Amplifiers
Strain Gauge Amplifiers
Low level signal processing
Medical instrumentation
Precision dual limit threshold detection
Instrumentation amplifiers
15V
8.2k
LM329
2k*
LT1002A
LT1002
LT1002A
LT1002
LT1002A
LT1002
LT1002A
LT1002
LT1002A
LT1002
4.99k*
Strain Gauge Signal Conditioner with Bridge Excitation
10
11
4
3
+
+
U
LT1002
LT1002
350 BRIDGE
1/2
1/2
P-P
0.9 V/ C max
1.3 V/ C max
100 V max
110dB min
110dB min
132dB min
130dB min
60 V max
40 V max
80 V max
13
6
IN4148
IN4148
2k
2k
U
–15V
15V
2N2907
2N2219
100
5W
100 5W
301k*
TO MONITORING
REFERENCE OUT
A/D CONVERTER
*RN60C FILM RESISTORS
10k
ZERO
3
2
+
LT1001
1 F
DESCRIPTIO
The LT
fiers combine excellent individual amplifier performance
with tight matching and temperature tracking between
amplifiers.
In the design, processing, and testing of the device,
particular attention has been paid to the optimization of the
entire distribution of several key parameters and their
matching. Consequently, the specifications of even the
low cost commercial grade (LT1002C) have been spec-
tacularly improved compared to presently available de-
vices.
Essentially, the input offset voltage of all units is less than
80 V, and matching between amplifiers is consistently
beter than 60 V (see distribution plot below). Input bias
and offset currents, channel separation, common mode
and power suply rejections of the LT1002C are all speci-
fied at levels which were previsouly attainable only on very
expensive, selected grades of other dual devices. Power
dissipation is nearly halved compared to the most popular
precision duals, without adversely affecting noise or speed
performance. A by-product of lower dissipation is de-
creased warm-up drift. For even better performance in a
single precision op amp, refer to the LT1001 data sheet. A
bridge signal conditioning application is shown below.
This circuit illustrates the requirement for both excellent
matching and individual amplifier specifications.
GAIN
TRIM
6
Dual, Matched Precision
®
340k*
1.1k*
1002 dual, matched precision operational ampli-
0V TO 10V
OUT
1002 TA01
Operational Amplifier
U
Distribution of Offset Voltage Match
70
60
50
40
30
20
10
–100
0
–80
INPUT OFFSET VOLTAGE MATCH ( V)
–60 –40
–20
0
287 UNITS TESTED
20
40
V
T
A
S
60
= 25 C
= 15V
LT1002
1002 TA02
80 100
1002fb
1

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lt1002amj Summary of contents

Page 1

... Low noise 0.35 V P-P U APPLICATIO S Thermocouple Amplifiers Strain Gauge Amplifiers Low level signal processing Medical instrumentation Precision dual limit threshold detection Instrumentation amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation U TYPICAL APPLICATIO Strain Gauge Signal Conditioner with Bridge Excitation 15V 8.2k 2k ...

Page 2

... V+ (A) PART NO. 13 OUT (A) – 12 V– ( +IN ( –IN (B) LT1002ACN – 9 NULL (B) LT1002CN 8 NULL (B) N PACKAGE = 100 C/W JA LT1002AMJ LT1002MJ J PACKAGE LT1002ACJ = 100 C/W JA LT1002CJ OBSOLETE PACKAGE Consider the N Package for Alternate Source W LT1002M/LT1002C TYP MAX MIN TYP MAX 100 0.3 1.5 0.4 2.0 0.3 2 ...

Page 3

ELECTRICAL CHARACTERISTICS, I DIVIDUAL A PLIFIERS The denotes the specifications which apply over the temperature range – SYMBOL PARAMETER V Input Offset Voltage OS V Average Input Offset Voltage Drift OS Temp I Input Offset Current OS ...

Page 4

LT1002 W U ATCHI G CHARACTERISTICS The denotes the specifications which apply over the temperature range – SYMBOL PARAMETER Input Offset Voltage Match Input Offset Voltage Tracking + I Average Non-Inverting Bias B Current + I Non-Inverting ...

Page 5

W U TYPICAL PERFORMANCE CHARACTERISTICS Distribution of Offset Voltage of Individual Amplifiers 100 V = 15V 574 UNITS TESTED –100 –80 –60 –40 – ...

Page 6

LT1002 W U TYPICAL PERFORMANCE CHARACTERISTICS Matching and Individual Amplifier Bias and Offset Currents vs Temperature 2 15V S 1.8 1.6 1.4 MATCHING: NON INVERTING BIAS CURRENT 1.2 1.0 0.8 0.6 0.4 0 100 125 –50 ...

Page 7

W U TYPICAL PERFORMANCE CHARACTERISTICS Channel Separation vs Frequency 160 V = 15V 150 R =10 S 140 130 120 R =100 S 110 100 R = 100 1k 10k 100k ...

Page 8

LT1002 W U TYPICAL PERFORMANCE CHARACTERISTICS Output Swing vs. Load Resistance 16 NEGATIVE SWING 12 POSITIVE SWING 100 300 LOAD RESISTANCE ( ) U U APPLICATIONS INFORMATION The LT1002 dual amplifier may be inserted directly into OP-10, ...

Page 9

U U APPLICATIONS INFORMATION Test Circuit for Offset Voltage and its Drift with Temperature 50k* 15V 3 14 (7) – (10) 13 (6) 1/2 V 100 * O LT1002 (5) (11) 50k* * RESISTORS MUST HAVE LOW ...

Page 10

LT1002 U U APPLICATIONS INFORMATION Advantages of Matched Dual Op Amps In many applica- tions the performance of a system depends on the match- ing between two operational amplifiers rather than the individual characteristics of the two op amps. Two ...

Page 11

U U APPLICATIONS INFORMATION 130k LM129A 8.2k 1% The LT1002 contributes less than 5% of the total drift with temperature, noise and long term drift of the reference. UPPER LIMIT INPUT LOWER LIMIT When the upper or lower limit is ...

Page 12

LT1002 U U APPLICATIONS INFORMATION R1 100k* – INPUTS + * TRIM FOR COMMON-MODE REJECTION † TRIM FOR GAIN R4 GAIN = R3 This application utilizes the guaranteed 10mA load driving capability of the LT1002. The offset voltage of amplifier ...

Page 13

U U APPLICATIONS INFORMATION INPUT 100k** 100k** 2 – 6 LM301A 100k 1 Q1 30pF 2N4393 IN914 100k 15pF 2 – 6 LM301A 3 + 10k 0.1% INPUT –10 to 10V W U Dead Zone Generator Q4 ...

Page 14

LT1002 U U APPLICATIONS INFORMATION 22k* 43k* 100 (SELECT) 3 – 1/2 LT1002 + 15V 4 8.2k LM399 KVD 00000 – 99999 + 1 KELVIN-VARLEY DIVIDER –15V ESI#DP311 KVD = ESI#DP311 * = JULIE RSCH. LABS #R-44 25k 680pF 2 ...

Page 15

... NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS 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. Q27 ...

Page 16

... BSC COMMENTS Precision Op Amp Max V www.linear.com 0.770* (19.558) MAX 0.065 (1.651) TYP 0.018 0.003 (0.457 0.076) N14 1098 , 400pA Max LT/CPI 1101 1.5K REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1985 1002fb ...

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