參數(shù)資料
型號： TLV320AIC3110IRHBT
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： AUDIO AMPLIFIER, PQCC32
封裝： 5 X 5 MM, GREEN, PLASTIC, QFN-32
文件頁數(shù)： 40/126頁
文件大小： 1528K
代理商： TLV320AIC3110IRHBT
SLAS647 – DECEMBER 2009
www.ti.com
5.2.1.5
Software Power Down
By default, all circuit blocks are powered down following a reset condition. Hardware power up of each
circuit block can be controlled by writing to the appropriate control register. This approach allows the
lowest power-supply current for the functionality required. However, when a block is powered down, all of
the register settings are maintained as long as power is still being applied to the device.
5.2.2
Audio Analog I/O
The TLV320AIC3110 has a stereo audio DAC and a monaural ADC. It supports a wide range of analog
interfaces to support different headsets and analog outputs. The TLV320AIC3110 has features to interface
output drivers (8-
, 16-, 32-) and a microphone PGA with AGC control. A special circuit has also been
included in the TLV320AIC3110 to insert a short key-click sound into the stereo audio output. The
key-click sound is used to provide feedback to the user when a particular button is pressed or item is
selected. The specific sound of the keyclick can be adjusted by varying several register bits that control its
frequency, duration, and amplitude. See Key-Click Functionality With Digital Sine-Wave Generator
(PRB_P25), Section 5.5.5.
5.3
Digital Processing Low-Power Modes
The TLV320AIC3110 device can be tuned to minimize power dissipation, to maximize performance, or to
an operating point between the two extremes to best fit the application. The choice of processing blocks,
PRB_P1 to PRB_P25 for stereo playback and PRB_R4 to PRB_R18 for mono recording, also influences
the power consumption. In fact, the numerous processing blocks have been implemented to offer a choice
among configurations having a different balance of power-optimization and signal-processing capabilities.
5.3.1
ADC, Mono, 48 kHz, DVDD = 1.8 V, AVDD = 3.3 V
AOSR = 128, Processing Block = PRB_R4 (Decimation Filter A)
Power consumption = 9.01 mW
Table 5-1. PRB_R4 Alternative Processing Blocks, 9.01 mW
Processing Block
Filter
Estimated Power Change (mW)
PRB_R5
A
0.23
PRB_R6
A
0.22
AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B)
Power consumption = 7.99 mW
Table 5-2. PRB_R11 Alternative Processing Blocks, 7.99 mW
Processing Block
Filter
Estimated Power Change (mW)
PRB_R4
A
0.43
PRB_R5
A
0.67
PRB_R6
A
0.66
PRB_R10
B
–0.14
PRB_R12
B
0.04
20
APPLICATION INFORMATION
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV320AIC3110
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