LT1102 查看數據表（PDF） - Linear Technology

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LT1102

High Speed, Precision, JFET Input Instrumentation Amplifier (Fixed Gain = 10 or 100)

Linear Technology 

LT1102

High Speed, Precision,

JFET Input Instrumentation Amplifier

(Fixed Gain = 10 or 100)

FEATURES

■ Slew Rate: 30V/μs

■ Gain-Bandwidth Product: 35MHz

■ Settling Time (0.01%): 3μs

■ Overdrive Recovery: 0.4μs

■ Gain Error: 0.05% Max

■ Gain Drift: 5ppm/°C

■ Gain Nonlinearity: 16ppm Max

■ Offset Voltage (Input + Output): 600μV Max

– Drift with Temperature: 2μV/°C

■ Input Bias Current: 40pA Max

■ Input Offset Current: 40pA Max

– Drift with Temperature (to 70°C): 0.5pA/°C

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APPLICATIO S

■ Fast Settling Analog Signal Processing

■ Multiplexed Input Data Acquisition Systems

■ High Source Impedance Signal Amplification from

High Resistance Bridges, Capacitance Sensors,

Photodetector Sensors

■ Bridge Amplifier with < 1Hz Lowpass Filtering

DESCRIPTIO

The LT®1102 is the first fast FET input instrumentation

amplifier offered in the low cost, space saving 8-pin

packages. Fixed gains of 10 and 100 are provided with

excellent gain accuracy (0.01%) and non-linearity (3ppm).

No external gain setting resistor is required.

Slew rate, settling time, gain-bandwidth product,

overdrive recovery time are all improved compared to

competitive high speed instrumentation amplifiers.

Industry best speed performance is combined with

impressive precision specifications: less than 10pA input

bias and offset currents, 180μV offset voltage. Unlike

other FET input instrumentation amplifiers, on the LT1102

there is no output offset voltage contribution to total error,

and input bias currents do not double with every 10°C rise

in temperature. Indeed, at 70°C ambient temperature the

input bias current is only 40pA.

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

TYPICAL APPLICATIO

Wideband Instrumentation Amplifier

with ±150mA Output Current

V+ = 15V

5

6+

7

8

LT1102

3–

4

2

1

R

BIAS

LT1010

OUT

V – = – 15V

OUTPUT = ± 10V INTO 75Ω TO 330kHz (R = 50Ω)

± 10V INTO 200Ω TO 330kHz (R = 200Ω)

DRIVES 2.2nF CAP LOAD

GAIN = 10, DEGRADED 0.01% DUE TO LT1010

LT1102 • TA01

Slew Rate

FPO

G = 10

0.5μs/DIV

FPOLT1102 • TA02

1102fb

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