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VCA610 Datasheet, PDF (1/12 Pages) Burr-Brown (TI) – WIDEBAND VOLTAGE CONTROLLED AMPLIFIER | |||
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VCA610
VCA610
VCA610
WIDEBAND
VOLTAGE CONTROLLED AMPLIFIER
FEATURES
q WIDE GAIN CONTROL RANGE: 80dB
q SMALL PACKAGE: 8-pin SOIC or DIP
q WIDE BANDWIDTH: 30MHz
q LOW VOLTAGE NOISE: 2.2nV/âHz
q FAST GAIN SLEW RATE: 300dB/µs
q EASY TO USE
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 has a gain control range of 80dB (â40dB
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 â80dB of attenua-
tion. Group delay variation with gain is typically less
than ±2ns across a bandwidth of 1 to 15MHz.
The VCA610 has a noise figure of 3.5dB (with an RS
of 200â¦) 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 100â¦.
The high speed, 300dB/µs, gain control signal is a
unipolar (0 to â2V) voltage that varies the gain lin-
early in dB/V.
APPLICATIONS
q OPTICAL DISTANCE MEASUREMENT
q AGC AMPLIFIER
q ULTRASOUND
q SONAR
q ACTIVE FILTERS
q LOG AMPLIFIER
q IF CIRCUITS
q CCD CAMERAS
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.
+5V â5V
6 72
8
âIn
1
+In
3
VC
Gain
Control
VCA610
5
VOUT
International Airport Industrial Park ⢠Mailing Address: PO Box 11400, Tucson, AZ 85734 ⢠Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 ⢠Tel: (520) 746-1111 ⢠Twx: 910-952-1111
Internet: http://www.burr-brown.com/ ⢠FAXLine: (800) 548-6133 (US/Canada Only) ⢠Cable: BBRCORP ⢠Telex: 066-6491 ⢠FAX: (520) 889-1510 ⢠Immediate Product Info: (800) 548-6132
©1992 Burr-Brown Corporation
PDS-1140D
Printed in U.S.A. January, 1995
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