- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367929 > PGA2311PG4 Stereo Audio VOLUME CONTROL PDF資料下載
參數(shù)資料
| 型號： | PGA2311PG4 |
| 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)： | 7/17頁 |
| 文件大?。?/td> | 653K |
| 代理商： | PGA2311PG4 |
SBOS218A
–
DECEMBER 2001
–
REVISED JUNE 2002
www.ti.com
7
GENERAL DESCRIPTION
The PGA2311 is a stereo audio volume control. It may
be used in a wide array of professional and consumer
audio equipment. The PGA2311 is fabricated in a sub
–
micron CMOS process.
The heart of the PGA2311 is a resistor network, an ana-
log switch array, and a high
–
performance op amp
stage. The switches are used to select taps in the resis-
tor network that, in turn, determine the gain of the am-
plifier 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 PGA2311.
POWER
–
UP STATE
On power up,
“
power
–
up reset
”
is activated for about
100ms during which the circuit is in hardware MUTE
state and all internal flip-flops are reset. At the end of this
period, the offset calibration is initiated without any exter-
nal signals. Once this has been completed, the gain byte
value for both the left and right channels are set to 00
HEX
,
or the software MUTE condition. The gain will remain at
this setting until the host controller programs new set-
tings for for each channel via the serial control port.
If during normal operation the power supply voltage
drops below
±
3.2V, the circuit enters a hardware MUTE
state. A power-up sequence will be initiated if the power
supply voltage returns to greater than
±
3.2V.
ANALOG INPUTS AND OUTPUTS
The PGA2311 includes two independent channels, re-
ferred to as the left and right channels. Each channel has
a corresponding input and output pin. The input and out-
put 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).
The input and output pins may swing within 1.25V of the
analog power supplies, V
A
+ (pin 12) and V
A
–
(pin 13).
Given V
A
+ = +5V and V
A
–
=
–
5V, the maximum input or
output voltage range is 7.5Vp-p.
For optimal performance, it is best to drive the PGA2311
with a low source impedance. A source impedance of
600
or less is recommended. Source impedances up
to 2k
will cause minimal degradation of THD+N. Please
refer to the
“
THD+N vs Source Impedance
”
plot in the
Typical Characteristics section of the datasheet.
Figure 1. PGA2311 Block Diagram.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PGA2311UAG4 | Stereo Audio VOLUME CONTROL |
| PGA2311UG4 | Stereo Audio VOLUME CONTROL |
| PGA2320IDWG4 | Stereo Audio Volume Control |
| PGA2500IDBG4 | Digitally Controlled Microphone Preamplifier |
| PGA2500IDBRG4 | Digitally Controlled Microphone Preamplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PGA2311U | 功能描述:音頻放大器 5V 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 |
| PGA2311U/1K | 功能描述:音頻放大器 5V Stereo Audio Vol 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 |
| PGA2311U/1KG4 | 功能描述:音頻放大器 5V Stereo Audio Vol 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 |
| PGA2311UA | 功能描述:音頻放大器 +/-5V St Aud Vol 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 |
| PGA2311UA | 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL 2311 SOIC16 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL, 2311, SOIC16 制造商:Texas Instruments 功能描述:AUDIO VOLUME CONTROL, 2311, SOIC16; Audio Control Type:Volume; Supply Voltage Range: 4.75V to 5.25V; Control Interface:Serial, SPI; Audio IC Case Style:SOIC; No. of Pins:16; Operating Temperature Min:-40C; Operating Temperature ;RoHS Compliant: Yes |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。