LT2078 Linear Technology Corporation, LT2078 Datasheet

LT2078

Manufacturer Part Number

LT2078

Description

Manufacturer

Linear Technology Corporation

Datasheets

1.LT2078.pdf (16 pages)

2.LT2078.pdf (16 pages)

Specifications of LT2078

Case

SOP8

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APPLICATIONS

FEATURES

TYPICAL

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

Battery or Solar-Powered Systems

Micropower Sample-and-Hold

Thermocouple Amplifier

Micropower Filters

SO Package with Standard Pinout

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

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

–INPUT

APPLICATION

–

1/2 LT2078

10.1k

P-P

, 0.1Hz to 10Hz

NONINVERTING

, 0.1Hz to 10Hz

10.1k

+INPUT

OUTPUT NOISE = 85 V

INPUT RANGE = 0.03V TO 1.8V

OUTPUT RANGE= 0.03V TO 2.3V

OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS

–

1/2 LT2078

(Li-Ion)

= 300 V

(0.3mV

LT2078/79 • TA01

P-P

RMS

OUT

0.1Hz TO 10Hz

IN +

OVER FULL BANDWIDTH

– V

IN –

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

–120

Distribution of Input Offset Voltage

5000 OP AMPS

= 5V, 0V

–80

INPUT OFFSET VOLTAGE ( V)

–40

LT 2078/LT 2079

2078/79 • TA02

120

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