VCA610UA-TR

更新时间： 2024-11-03 12:57:55

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BB		放大器
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VCA610UA-TR 数据手册

VCA610

WIDEBAND

VOLTAGE CONTROLLED AMPLIFIER

FEATURES

APPLICATIONS

● WIDE GAIN CONTROL RANGE: 80dB

● SMALL PACKAGE: 8-pin SOIC or DIP

● WIDE BANDWIDTH: 30MHz

● OPTICAL DISTANCE MEASUREMENT

● AGC AMPLIFIER

● ULTRASOUND

● LOW VOLTAGE NOISE: 2.2nV/√Hz

● FAST GAIN SLEW RATE: 300dB/µs

● EASY TO USE

● SONAR

● ACTIVE FILTERS

● LOG AMPLIFIER

● IF CIRCUITS

● CCD CAMERAS

DESCRIPTION

The VCA610 is a wideband, continuously variable,

voltage controlled gain amplifier. It provides linear-

dB gain control with high impedance inputs. It is

designed to be used as a flexible gain control element

in a variety of electronic systems.

The VCA610 is designed with a very fast overload

recovery time of only 200ns. This allows a large

signal transient to overload the output at high gain,

without obscuring low-level signals following closely

behind. The excellent overload recovery time and

distortion specifications optimize this device for low-

level doppler measurements.

The VCA610 has a gain control range of 80dB (–40dB

to +40dB) providing both gain and attenuation for

maximum flexibility in a small 8-lead SO-8 or plastic

dual-in-line package. The broad attenuation range can

be used for gradual or controlled channel turn-on and

turn-off for applications in which abrupt gain changes

can create artifacts or other errors. In addition, the

output can be disabled to provide –80dB of attenua-

tion. Group delay variation with gain is typically less

than ±2ns across a bandwidth of 1 to 15MHz.

+5V –5V

–In

+In

The VCA610 has a noise figure of 3.5dB (with an R_S

of 200Ω) including the effects of both current and

voltage noise. Instantaneous output dynamic range is

70dB for gains of 0dB to +40dB with 1MHz noise

bandwidth. The output is capable of driving 100Ω.

The high speed, 300dB/µs, gain control signal is a

unipolar (0 to –2V) voltage that varies the gain lin-

early in dB/V.

V_OUT

V_C

Gain

Control

VCA610

International Airport Industrial Park

•

Mailing Address: PO Box 11400, Tucson, AZ 85734

FAXLine: (800) 548-6133 (US/Canada Only)

•

Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706

•

Tel: (520) 746-1111

•

Twx: 910-952-1111

Internet: http://www.burr-brown.com/

•

Cable: BBRCORP

•

Telex: 066-6491

•

FAX: (520) 889-1510

•

Immediate Product Info: (800) 548-6132

PDS-1140D

Printed in U.S.A. January, 1995

12 3 4 5 6 7...12

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