Datasheet > VCA2614

VCA2614

更新时间： 2024-11-01 22:16:15

品牌	Logo	应用领域
BB		放大器
页数	文件大小	规格书
15页	289K
描述
Dual, VARIABLE GAIN AMPLIFIER with Input Buffer

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VCA2614 数据手册

VCA2614

SBOS185D – JANUARY 2001 – REVISED MARCH 2003

Dual, VARIABLE GAIN AMPLIFIER

with Input Buffer

FEATURES

● GAIN RANGE: 40dB

DESCRIPTION

The VCA2614 is a highly integrated, dual receive channel,

Variable Gain Amplifier (VGA) with analog gain control.

● 40MHz BANDWIDTH

The VCA2614’s VGA section consists of two parts: the Volt-

age Controlled Attenuator (VCA) and the Programmable Gain

Amplifier (PGA). The gain and gain range of the PGA can be

digitally programmed. The combination of these two program-

mable elements results in a variable gain ranging from 0dB up

to a maximum gain as defined by the user through external

connections. The single-ended unity gain input buffer provides

predictable high input impedance. The output of the VGA can

be used in either a single-ended or differential mode to drive

high-performance Analog-to-Digital Converters (ADCs). A sepa-

rate power-down pin reduces power consumption.

● LOW CROSSTALK: 70dB at Max Gain, 5MHz

● HIGH-SPEED VARIABLE GAIN ADJUST

● POWER SHUTDOWN MODE

● HIGH IMPEDANCE INPUT BUFFER

APPLICATIONS

● ULTRASOUND SYSTEMS

● GAMMA CAMERAS

● WIRELESS RECEIVERS

● TEST EQUIPMENT

The VCA2614 also features low crosstalk and outstanding

distortion performance. The combination of low noise and gain

range programmability makes the VCA2614 a versatile build-

ing block in a number of applications where noise perfor-

mance is critical. The VCA2614 is available in a TQFP-32

package.

C_P2A

C_P1A

VCA2614

(1 of 2 Channels)

N_OUTA

Voltage

Control

Attenuator

Programmable

Gain Amplifier

Buffer

IN_A

P_OUTA

MGS₁

Maximum

Gain Select

MGS₃

Analog

Control

Maximum Gain

MGS₂

VCA_CNTL

Select

N_OUTB

Voltage

Control

Attenuator

Programmable

Gain Amplifier

Buffer

IN_B

P_OUTB

C_P2B

C_P1B

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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