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参数资料
| 型号： | PGA2500IDBG4 |
| 英文描述： | Digitally Controlled Microphone Preamplifier |
| 中文描述： | 数控麦克风前置放大器 |
| 文件页数： | 10/17页 |
| 文件大小： | 206K |
| 代理商： | PGA2500IDBG4 |
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SBOS289A NOVEMBER 2003 REVISED DECEMBER 2003
www.ti.com
10
DAISY-CHAINING MULTIPLE PGA2500
PREAMPLIFIERS
Since the serial port interface may be viewed as a serial in,
serial out shift register, multiple PGA2500 preamplifiers
may be connected in a cascaded or daisy-chained fashion,
as shown in Figure 4. The daisy-chained PGA2500
devices behave as a 16 x
N
-bit shift register, where
N
is the
number of cascaded PGA2500 devices. To program all of
the devices, simply force CS low for 16 x
N
serial clock
periods and clock in 16 x
N
bits of control data. The CS
input is then forced high to latch in the new settings.
A timing diagram for the daisy-chain application is shown
in Figure 5.
CS
SCLK
SDI
SDO
V
OUT
+
V
OUT
V
IN
+
V
IN
PGA2500
#1
CS
SCLK
SDI
SDO
V
OUT
+
V
OUT
V
IN
+
V
IN
PGA2500
#2
CS
SCLK
SDI
SDO
V
OUT
+
V
OUT
V
IN
+
V
IN
PGA2500
#
N
CS
DATACLK
DOUT
DIN
Micro
or DSP
Figure 4. Daisy-Chain Configuration for Multiple PGA2500 Preamplifiers
SCLK
CS
SDI
DC
G0
DC
G0
DC
Device #1
Device #2
Device #
N
G0
Figure 5. Serial Port Operation for Daisy-Chain Operation
相关PDF资料 |
PDF描述 |
|---|---|
| PGA2500IDBRG4 | Digitally Controlled Microphone Preamplifier |
| PGA4311U2 | 4-Channel Audio Volume Control |
| PGA4311UA1 | 4-Channel Audio Volume Control |
| PGA4311UAG4 | 4-Channel Audio Volume Control |
| PGA4311UG4 | 4-Channel Audio Volume Control |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PGA2500IDBR | 功能描述:传声器前置放大器 0dB & 10dB-65dB in 1dB steps RoHS:否 制造商:Texas Instruments 可用增益调整:Digital control, 65 dB to 0 dB 共模抑制比（最小值）: 输入补偿电压: 最大输入电阻:9200 Ohms 最大工作温度:+ 85 C 封装 / 箱体:SSOP-28 封装:Tube |
| PGA2500IDBRG4 | 功能描述:传声器前置放大器 0dB & 10dB-65dB in 1dB steps RoHS:否 制造商:Texas Instruments 可用增益调整:Digital control, 65 dB to 0 dB 共模抑制比（最小值）: 输入补偿电压: 最大输入电阻:9200 Ohms 最大工作温度:+ 85 C 封装 / 箱体:SSOP-28 封装:Tube |
| PGA2505 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Digitally-Controlled MICROPHONE PREAMPLIFIER |
| PGA2505EVM | 功能描述:音频 IC 开发工具 PGA2505 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| PGA2505IDB | 功能描述:传声器前置放大器 Dig-Controlled Micro phone Preamp RoHS:否 制造商:Texas Instruments 可用增益调整:Digital control, 65 dB to 0 dB 共模抑制比（最小值）: 输入补偿电压: 最大输入电阻:9200 Ohms 最大工作温度:+ 85 C 封装 / 箱体:SSOP-28 封装:Tube |
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