LT1128AM Datasheet

IC型號：
LT1128AM
PDF描述：
Linear Technology [Ultra Low Noise Precision High Speed Op ...
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439.14KB
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LT1028/LT1128

Ultra Low Noise Precision

High Speed Op Amps

FEATURES

DESCRIPTIO

Voltage Noise

1.1nV/鈭欻z Max. at 1kHz

0.85nV/鈭欻z Typ. at 1kHz

1.0nV/鈭欻z Typ. at 10Hz

35nV

P-P

Typ., 0.1Hz to 10Hz

Voltage and Current Noise 100% Tested

Gain-Bandwidth Product

LT1028: 50MHz Min.

LT1128: 13MHz Min.

Slew Rate

LT1028: 11V/碌s Min.

LT1128: 5V/碌s Min.

Offset Voltage: 40碌V Max.

Drift with Temperature: 0.8碌V/擄C Max.

Voltage Gain: 7 Million Min.

Available in 8-Pin SO Package

The LT1028(gain of 鈥? stable)/LT1128(gain of +1 stable)

achieve a new standard of excellence in noise performance

with 0.85nV/鈭欻z 1kHz noise, 1.0nV/鈭欻z 10Hz noise. This

ultra low noise is combined with excellent high speed

specifications (gain-bandwidth product is 75MHz for

LT1028, 20MHz for LT1128), distortion-free output, and

true precision parameters (0.1碌V/擄C drift, 10碌V offset

voltage, 30 million voltage gain). Although the LT1028/

LT1128 input stage operates at nearly 1mA of collector

current to achieve low voltage noise, input bias current is

only 25nA.

The LT1028/LT1128鈥檚 voltage noise is less than the noise

of a 50鈩?resistor. Therefore, even in very low source

impedance transducer or audio amplifier applications, the

LT1028/LT1128鈥檚 contribution to total system noise will

be negligible.

APPLICATI

Low Noise Frequency Synthesizers

High Quality Audio

Infrared Detectors

Accelerometer and Gyro Amplifiers

350鈩?Bridge Signal Conditioning

Magnetic Search Coil Amplifiers

Hydrophone Amplfiers

Flux Gate Amplifier

VOLTAGE NOISE DENSITY (nV/鈭欻z)

DEMODULATOR

SYNC

OUTPUT TO

DEMODULATOR

LT1028

鈥?/div>

SQUARE

WAVE

DRIVE

1kHz

FLUX GATE

TYPICAL

SCHONSTEDT

#203132

1/f CORNER = 3.5Hz

50鈩?/div>

0.1

1028/1128 TA01

Voltage Noise vs Frequency

= 鹵15V

= 25擄C

MAXIMUM

1/f CORNER = 14Hz

TYPICAL

100

FREQUENCY (Hz)

1028/1128 TA02

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