VCA8613

更新时间： 2024-11-02 22:16:15

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
21页	376K
描述
8-Channel VARIABLE GAIN AMPLIFIER

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VCA8613 数据手册

VCA8613

8613

SBOS200C – APRIL 2003 – REVISED MARCH 2004

8-Channel

VARIABLE GAIN AMPLIFIER

● INTEGRATED INPUT CLAMP DIODES

FEATURES

● DIFFERENTIAL OUTPUT

● 3V OPERATION

● INTEGRATED INPUT LNA

● LOW INPUT NOISE: 1.2nV√Hz at f_IN= 5MHz

● READABLE CONTROL REGISTERS

● EXTREMELY LOW POWER OPERATION:

75mW/CHANNEL

● INTEGRATED CONTINUOUS WAVE (CW)

PROCESSOR

● INTEGRATED LOW-PASS, 2-POLE FILTER

14MHz BANDWIDTH

gain range of the PGA can be digitally configured separately. The

gain of the PGA can be varied between two discrete settings of

21dB and 26dB. The VCA has four programmable maximum

attenuation settings: 29dB, 33dB, 36.5dB, and 40dB. Also, the

VCA can be continuously varied by a control voltage from 0dB to

a maximum of 29dB, 33dB, 36.5dB, and 40dB.

DESCRIPTION

The VCA8613 is an 8-channel variable gain amplifier ideally

suited to portable ultrasound applications. Excellent dynamic

performance enables use in low-power, high-performance

portable applications. Each channel consists of a Low-Noise

pre-Amplifier (LNA) and a Variable Gain Amplifier (VGA). The

differential outputs of the LNA can be switched through the

8x10 cross-point switch, which is programmable through the

serial interface input port.

The output of the PGA feeds directly into an integrated

2-pole, low-pass filter, allowing for direct connection to a

differential input Analog-to-Digital Converter (ADC), such as

the ADS5121 or ADS5122 from Texas Instruments. The

VCA8613 is available in a TQFP-64 package.

The output of the LNA is fed directly into the VGA stage. The

VGA consists of two parts, a Voltage Controlled Attenuator

(VCA) and a Programmable Gain Amplifier (PGA). The gain and

5x8

FIFO

D^(0-3)

CW^(1-10)

CW Processor

DATA

Serial

Interface

CLK

Analog

Control

OutP⁽¹⁾

OutN⁽¹⁾

2-Pole

Filter

LNAIN1

LNA

Attenuator

PGA

•

V_LNA

OutP⁽⁸⁾

OutN⁽⁸⁾

2-Pole

Filter

LNAIN8

LNA

Attenuator

PGA

V_LNA

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.

All trademarks are the property of their respective owners.

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

12 3 4 5 6 7...21

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与VCA8613相关器件

型号	品牌	获取价格	描述	数据表
VCA8613YR	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8613YT	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617	BB	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617_14	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617PAGR	BB	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617PAGR	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617PAGRG4	TI	获取价格	SPECIALTY ANALOG CIRCUIT, PQFP64, GREEN, PLASTIC, TQFP-64
VCA8617PAGT	BB	获取价格	8-Channel VARIABLE GAIN AMPLIFIER
VCA8617PAGT	TI	获取价格	8-Channel VARIABLE GAIN AMPLIFIER

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