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參數(shù)資料
| 型號： | VCA8613YR |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 可變增益放大器 |
| 英文描述： | 8-Channel VARIABLE GAIN AMPLIFIER |
| 中文描述： | 8通道可變增益放大器 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大?。?/td> | 378K |
| 代理商： | VCA8613YR |
8-Channel
VARIABLE GAIN AMPLIFIER
FEATURES
G
3V OPERATION
G
LOW INPUT NOISE: 1.2nV
√
Hz
at f
IN
= 5MHz
G
EXTREMELY LOW POWER OPERATION:
75mW/CHANNEL
G
INTEGRATED LOW-PASS, 2-POLE FILTER
14MHz BANDWIDTH
VCA8613
SBOS200C – APRIL 2003 – REVISED MARCH 2004
www.ti.com
Copyright 2003-2004, Texas Instruments Incorporated
OutP
(1)
OutN
(1)
LNAIN1
LNA
V
LNA
V
LNA
Attenuator
Analog
Control
PGA
2-Pole
Filter
CW
(1-10)
D
(0-3)
CW Processor
5x8
FIFO
OutP
(8)
OutN
(8)
LNAIN8
LNA
Attenuator
PGA
2-Pole
Filter
DATA
CLK
CS
Serial
Interface
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 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
G
INTEGRATED INPUT CLAMP DIODES
G
DIFFERENTIAL OUTPUT
G
INTEGRATED INPUT LNA
G
READABLE CONTROL REGISTERS
G
INTEGRATED CONTINUOUS WAVE (CW)
PROCESSOR
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.
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.
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.
VCA8613
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.
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參數(shù)描述 |
|---|---|
| VCA8613YT | 功能描述:特殊用途放大器 8-Channel Variable Gain Amplifier RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA8616PAGT | 制造商:Texas Instruments 功能描述: |
| VCA8617 | 制造商:BB 制造商全稱:BB 功能描述:8-Channel VARIABLE GAIN AMPLIFIER |
| VCA8617PAGR | 功能描述:特殊用途放大器 8-Channel Variable Gain Amplifier RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA8617PAGRG4 | 功能描述:特殊用途放大器 8-Channel Variable Gain Amplifier RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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