Datasheet > LT1028

LT1028

更新时间： 2024-11-24 14:57:19

品牌	Logo	应用领域
亚德诺 - ADI		放大器运算放大器
页数	文件大小	规格书
28页	712K
描述
超低噪声、精准型高速运算放大器

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LT1028 数据手册

LT1028/LT1128

Ultralow Noise Precision

High Speed Op Amps

FEATURES

DESCRIPTION

Voltage Noise

The LT^®1028(gain of –1 stable)/LT1128(gain of +1 stable)

achieveanewstandardofexcellenceinnoiseperformance

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

ultralow 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 (0.1µV/°C drift, 10µV 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.

1.1nV/√Hz Max at 1kHz

0.85nV/√Hz Typ at 1kHz

1.0nV/√Hz Typ at 10Hz

35nV Typ, 0.1Hz to 10Hz

P-P

Voltage and Current Noise 100% Tested

Gain-Bandwidth Product

LT1028: 50MHz Min

LT1128: 13MHz Min

Slew Rate

LT1028: 11V/µs Min

LT1128: 5V/µs Min

Offset Voltage: 40µV Max

Drift with Temperature: 0.8µV/°C Max

Voltage Gain: 7 Million Min

Available in 8-Lead SO Package

The LT1028/LT1128’s voltage noise is less than the noise

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

impedance transducer or audio amplifier applications,

the LT1028/LT1128’s contribution to total system noise

will be negligible.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

APPLICATIONS

Low Noise Frequency Synthesizers

High Quality Audio

Infrared Detectors

Accelerometer and Gyro Amplifiers

350Ω Bridge Signal Conditioning

Magnetic Search Coil Amplifiers

Hydrophone Amplifiers

TYPICAL APPLICATION

Ultralow Noise 1M TIA Photodiode Amplifier

Voltage Noise vs Frequency

= 15V

0.1µF

4.32k

= 25°C

MAXIMUM

1/f CORNER = 14Hz

JFET

NXP

0.5pF

TYPICAL

BF862

PHOTO

DIODE

SFH213

–

1/f CORNER = 3.5Hz

= ~0.4V + I • 1M

OUT

LT1028

1028 TA01

4.99k

–

= ±15V

–

0.1

100

FREQUENCY (Hz)

1028 TA02

1028fd

For more information www.linear.com/LT1028

12 3 4 5 6 7...28

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