Datasheet > 508586G

508586G

更新时间： 2024-11-27 23:21:39

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
20页	442K
描述
IC

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508586G 数据手册

LT1078/LT1079

Micropower, Dual and

Quad, Single Supply, Precision Op Amps

FEATURES

DESCRIPTION

The LT^®1078 is a micropower dual op amp in 8-pin

■

Available in 8-Pin SO Package

■

packages including the small outline surface mount pack-

age. The LT1079 is a micropower quad op amp offered in

the standard 14-pin packages. Both devices are optimized

for single supply operation at 5V. ±15V specifications are

also provided.

50µA Max Supply Current per Amplifier

■

70µV Max Offset Voltage

■

180µA Max Offset Voltage in 8-Pin SO

■

250pA Max Offset Current

■

0.6µV_P-P, 0.1Hz to 10Hz Voltage Noise

■

3pA_P-P, 0.1Hz to 10Hz Current Noise

Micropowerperformanceofcompetingdevicesisachieved

at the expense of seriously degrading precision, noise,

speedandoutputdrivespecifications. Thedesigneffortof

the LT1078/LT1079 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.

■

0.4µV/°C Offset Voltage Drift

200kHz Gain Bandwidth Product

0.07V/µs Slew Rate

Single Supply Operation

■

Input Voltage Range Includes Ground

Output Swings to Ground while Sinking Current

No Pull-Down Resistors Needed

■

Output Sources and Sinks 5mA Load Current

APPLICATIONS

The 1/f corner of the voltage noise spectrum is at 0.7Hz,

at least three times lower than on any monolithic op amp.

This results in low frequency (0.1Hz to 10Hz) noise

performance which can only be found on devices with an

order of magnitude higher supply current.

■

Battery or Solar-Powered Systems

Portable Instrumentation

Remote Sensor Amplifier

Satellite Circuitry

■

Micropower Sample-and-Hold

Both the LT1078 and LT1079 can be operated from a

single supply (as low as one lithium cell or two Ni-Cad

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 resistors are needed.

■

Thermocouple Amplifier

■

Micropower Filters

, LTC and LT are registered trademarks of Linear Technology Corporation.

Distribution of Input Offset Voltage

Single Battery, Micropower, Gain = 100, Instrumentation Amplifier

(LT1078 and LT1079 in H, J, N Packages)

10.1k

= 5V, 0V

= 25°C

3V (LITHIUM CELL)

–

10.1k

–

1/2 LT1078

INVERTING

INPUT

OUT

1/2 LT1078

–

NONINVERTING

INPUT

LT1078/79 • TA01

TYPICAL PERFORMANCE

OUTPUT NOISE = 8µ5V 0.1Hz TO 10Hz

P-P

INPUT OFFSET VOLTAGE = 40µV

INPUT OFFSET CURRENT = 0.2nA

TOTAL POWER DISSIPATION = 240µW

= 30µ0V

OVER FULL BANDWIDTH

RMS

= 0.03V TO 1.8V

INPUT RANGE

OUTPUT RANGE = 0.03V TO 2.3V

–

(0.3mV≤ V – V ≤ 23mV)

IN IN

COMMON MODE REJECTION = 110dB (AMPLIFIER LIMITED)

GAIN BANDWIDTH PRODUCT = 200kHz

OUTPUTS SINK CURRENT—NO PULL-DOWN RESISTORS

ARE NEEDED

–120 –80

–40

120

INPUT OFFSET VOLTAGE (µV)

1078/79 • TA02

12 3 4 5 6 7...20

中文翻译

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