LT2078IS8 Linear Technology, LT2078IS8 Datasheet

IC OPAMP MICROPOWER DUAL 8-SOIC

LT2078IS8

Manufacturer Part Number
LT2078IS8
Description
IC OPAMP MICROPOWER DUAL 8-SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT2078IS8

Amplifier Type
General Purpose
Number Of Circuits
2
Slew Rate
0.1 V/µs
Gain Bandwidth Product
200kHz
Current - Input Bias
6nA
Voltage - Input Offset
70µV
Current - Supply
47µA
Voltage - Supply, Single/dual (±)
2.2 V ~ 36 V, ±1.1 V ~ 18 V
Operating Temperature
-40°C ~ 85°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
APPLICATIO S
FEATURES
FEATURES
TYPICAL
TYPICAL APPLICATIO
TYPICAL PERFORMANCE
INPUT OFFSET VOLTAGE = 40 V
INPUT OFFSET CURRENT = 0.2nA
TOTAL POWER DISSIPATION = 240 W
COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED)
GAIN BANDWIDTH PRODUCT = 200kHz
Supply Current per Amplifier: 50 A Max
Offset Voltage: 70 V Max
Offset Current: 250pA Max
Voltage Noise: 0.6 V
Current Noise: 3pA
Offset Voltage Drift: 0.4 V/ C
Gain Bandwidth Product: 200kHz
Slew Rate: 0.07V/ s
Single Supply Operation
Output Sources and Sinks 5mA Load Current
SO Package with Standard Pinout
Battery or Solar-Powered Systems
Micropower Sample-and-Hold
Thermocouple Amplifier
Micropower Filters
Single Battery, Micropower, Gain = 100, Instrumentation Amplifier
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry
Input Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors Needed
INVERTING
1M
–INPUT
2
3
APPLICATION
+
1/2 LT2078
10.1k
A
U
U
P-P
P-P
, 0.1Hz to 10Hz
NONINVERTING
1
, 0.1Hz to 10Hz
10.1k
+INPUT
U
U
6
5
OUTPUT NOISE = 85 V
INPUT RANGE
OUTPUT RANGE = 0.03V TO 2.3V
OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS
+
1/2 LT2078
(Li-Ion)
B
1M
3V
8
4
7
= 300 V
= 0.03V TO 1.8V
(0.3mV V
LT2078/79 • TA01
P-P
RMS
OUT
0.1Hz TO 10Hz
IN +
OVER FULL BANDWIDTH
– V
IN –
DESCRIPTIO
DESCRIPTION
The LT
outline, standard surface mount package, and LT2079 is
a micropower quad op amp offered in the standard 14-pin
surface mount package. Both devices are optimized for
single supply operation at 5V. 15V specifications are also
provided.
Micropower performance of competing devices is achieved
at the expense of seriously degrading precision, noise,
speed and output drive specifications. The design effort of
the LT2078/LT2079 was concentrated on reducing sup-
ply current without sacrificing other parameters. The
offset voltage achieved is the lowest on any dual or quad
nonchopper stabilized op amp––micropower or other-
wise. Offset current, voltage and current noise, slew rate
and gain bandwidth product are all two to ten times better
than on previous micropower op amps.
Both the LT2078/LT2079 can be operated from a single
supply (as low as one lithium cell or two NiCd batteries).
The input range goes below ground. The all NPN output
stage swings to within a few millivolts of ground while
sinking current––no power consuming pull-down resis-
tors are needed. For applications requiring DIP packages
refer to the LT1078/LT1079.
23mV)
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
2078 is a micropower dual op amp in 8-pin small
Micropower, Dual and
Quad, Single Supply,
Precision Op Amps
800
700
600
500
400
300
200
100
Distribution of Input Offset Voltage
0
–120
U
U
V
5000 OP AMPS
S
= 5V, 0V
–80
INPUT OFFSET VOLTAGE ( V)
–40
LT 2078/LT 2079
0
40
80
2078/79 • TA02
120
20789fa
1

Related parts for LT2078IS8

LT2078IS8 Summary of contents

Page 1

... The input range goes below ground. The all NPN output stage swings to within a few millivolts of ground while sinking current––no power consuming pull-down resis- tors are needed. For applications requiring DIP packages refer to the LT1078/LT1079. , LTC and LT are registered trademarks of Linear Technology Corporation (Li-Ion – ...

Page 2

... Specified Temperature Range Commercial ............................................. Industrial ............................................ – Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER OUT A –IN A LT2078ACS8 +IN A LT2078AIS8 V LT2078CS8 +IN B LT2078IS8 –IN B PART MARKING OUT B 2078A 2078 2078AI 2078I 5V, 0V 0.1V CONDITIONS (NOTE 2) MIN LT2078 LT2079 0 ...

Page 3

ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS (NOTE 1) A Large-Signal Voltage Gain V VOL V Maximum Output Voltage Output Low, No Load Swing Output Low GND Output Low, I Output High, No Load Output High GND SR ...

Page 4

LT2078/LT 2079 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER CONDITIONS A Large-Signal Voltage Gain V VOL V Maximum Output Voltage Output Low, No Load Swing Output Low, I Output High, No Load Output High ...

Page 5

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T SYMBOL PARAMETER V Input Offset Voltage OS V Input Offset Voltage Drift OS T (Note 6) I Input Offset Current OS I Input Bias Current B A Large-Signal Voltage Gain VOL ...

Page 6

LT2078/LT 2079 W U TYPICAL PERFORMANCE CHARACTERISTICS 0.1Hz to 10Hz Noise 2.5V S CHANNEL A CHANNEL TIME (SEC) LT2078/79 • TPC04 10Hz Voltage Noise Distribution 35 T ...

Page 7

W U TYPICAL PERFORMANCE CHARACTERISTICS Gain, Phase vs Frequency 30 PHASE MARGIN 58 20 15V 5V, 0V PHASE MARGIN 15V – 100 300 FREQUENCY (kHz) LTC2078/79 TPC12 Slew Rate, Gain Bandwidth Product and ...

Page 8

LT2078/LT 2079 W U TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Temperature 15V 5V –50 – 100 125 TEMPERATURE ( C) LT2078/79 • ...

Page 9

PLIFIED SCHEMATIC 10k 10k 2.2k Q16 Q12 4 Q11 1 Q27 Q1 600 – Q21 IN Q28 Q2 600 + Q22 + IN V Q39 175pF 6.2k 6.2k 1/2 ...

Page 10

LT2078/LT 2079 U U APPLICATIONS INFORMATION The LT2078/LT2079 devices are fully specified with + – 5V 0V 0.1V. This set of operating CM conditions appears to be the most representative for battery powered micropower ...

Page 11

U U APPLICATIONS INFORMATION 1. When the input is more than a diode drop below ground, unlimited current will flow from the substrate (V terminal) to the input. This can destroy the unit. On the LT2078/LT2079, resistors in series with ...

Page 12

LT2078/LT 2079 U U APPLICATIONS INFORMATION the individual characteristics of the two devices, the two and three op amp instrumentation amplifier configura- tions shown in this data sheet are examples. Matching characteristics are not 100% tested on the LT2078/LT2079. Some ...

Page 13

U TYPICAL APPLICATIONS Picoampere Input Current, Triple Op Amp Instrumentation Amplifier with Bias Current Cancellation – 1/4 LT2079 2 – 20M 200k R1 6 – 1/4 LT2079 ...

Page 14

LT2078/LT 2079 U TYPICAL APPLICATIONS Single Supply, Micropower, Second Order Lowpass Filter with 60Hz Notch 27.6k 27.6k 0.1% 0. 40Hz 505k 0.1% Y INPUT (5mV TO 50V – 1/4 LT2079 ...

Page 15

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 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. ...

Page 16

... BSC S14 0502 5k 220 C TRIM 7 0.02V TO 2.2V = OUT 220 C 0.1 C LT2078/79 • TA14 Max Drift Max Input Voltage Range Includes Ground LT/GP 0903 1K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1996 20789fa ...

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