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參數(shù)資料
| 型號(hào)： | PGA2320IDWG4 |
| 英文描述： | Stereo Audio Volume Control |
| 中文描述： | 立體聲音頻音量控制 |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 218K |
| 代理商： | PGA2320IDWG4 |
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SBOS312B JULY 2004 REVISED DECEMBER 2004
ANALOG INPUTS AND
OUTPUTS
The PGA2320 includes two independent channels,
referred to as the left and right channels. Each channel has
a corresponding input and output pin. The input and output
pins are unbalanced, or referenced to analog ground
(either AGNDR or AGNDL). The inputs are named V
IN
R
(pin 9) and V
IN
L (pin 16), while the outputs are named
V
OUT
R (pin 11) and V
OUT
L (pin 14).
www.ti.com
7
GENERAL DESCRIPTION
The PGA2320 is a stereo audio volume control. It may be
used in a wide array of professional and consumer audio
equipment. The PGA2320 is fabricated in a mixed-signal
BiCMOS process in order to take advantage of the
superior analog characteristics that the process offers.
The heart of the PGA2320 is a resistor network, an analog
switch array, and a high-performance bipolar op amp
stage. The switches are used to select taps in the resistor
network that, in turn, determine the gain of the amplifier
stage. Switch selections are programmed using a serial
control port. The serial port allows connection to a wide
variety of host controllers. Figure 1 shows a functional
block diagram of the PGA2320.
POWER-UP STATE
On power up, all internal flip-flops are reset. The gain byte
value for both the left and right channels are set to 00
HEX
,
or mute condition. The gain will remain at this setting until
the host controller programs new settings for each channel
via the serial control port.
It is important to drive the PGA2320 with a low source
impedance. If a source impedance of greater than 600
is
used, the distortion performance of the PGA2320 will
begin to degrade.
MUX
Serial
Control
Port
MUX
ZCEN
CS
SCLK
SDI
SDO
MUTE
V
OUT
R
V
OUT
L
V
IN
L
AGNDL
AGNDR
V
IN
R
V
A
+
V
A
V
D
+ DGND
12
13
4
5
11
7
3
6
2
1
8
14
16
15
10
9
8
8
8
8
Figure 1. PGA2320 Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PGA2320IDWR | 功能描述:音頻放大器 .+/-15V Stereo Audio Volume Control RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| PGA2320IDWRG4 | 功能描述:音頻放大器 .+/-15V Stereo Audio Volume Control RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| PGA2320IN | 制造商:Texas Instruments 功能描述:+/-15V STEREO AUDIO VOLUME CONTROL - Rail/Tube |
| PGA238H008B5-1938R | 制造商:FCI 功能描述: |
| PGA238H012B1-1938R | 制造商:FCI 功能描述: |
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