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參數(shù)資料
| 型號： | TLV320AIC26IRHB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數(shù)： | 47/67頁 |
| 文件大小： | 883K |
| 代理商： | TLV320AIC26IRHB |
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TLV320AIC26
SLAS412 DECEMBER 2003
www.ti.com
51
REGISTER 1EH: Audio Control 5
BIT
NAME
READ/
WRITE
RESET
VALUE
FUNCTION
D15D9
MAX_AGC_PGA
R/W
1111111
MAX Input Gain Applicable for AGC
0000000 => 0 dB
0000001 => 0.5 dB
0000010 => 1.0 dB
1110110 => 59.0 dB
1110111 => 59.5 dB
1111000 => 59.5 dB
1111111 => 59.5 dB
D8D6
AGC_NOI_DEB
R/W
000
AGC Debounce Time for Speech Mode to Silence Mode Transition
000 => 0 ms
001 => 0.5 ms
010 => 1.0 ms
110 => 16.0 ms
111 => 32.0 ms
D5D3
AGC_SIG_DEB
R/W
000
AGC Debounce Time for Silence Mode to Speech Mode Transition
000 => 0 ms
001 => 0.5 ms
010 => 1.0 ms
110 => 16.0 ms
111 => 32.0 ms
D2
DRV_POP_DIS
R/W
0
Audio Output Driver POP Reduction Enable
0 => Enabled
1 => Disabled
D1
DRV_POP_LEN
R/W
0
Audio Output Driver POP Reduction Duration
0 => Output driver ramps to final voltage in approximately 0.8 sec, if VGND is
powered down (1 msec otherwise).
1 => Output driver ramps to final voltage in approximately 4 sec, if VGND is powered
down (1 msec otherwise).
D0
Reserved
R
0
Reserved. Do not write 1 to this location.
LAYOUT
The following layout suggestions should provide optimum performance from the ’AIC26. However, many portable
applications have conflicting requirements concerning power, cost, size, and weight. In general, most portable devices
have fairly clean power and grounds because most of the internal components are very low power. This situation means
less bypassing for the converter power and less concern regarding grounding. Still, each situation is unique and the
following suggestions should be reviewed carefully.
For optimum performance, care must be taken with the physical layout of the ’AIC26 circuitry. The SAR architecture of the
auxiliary converter is sensitive to glitches or sudden changes on the power supply, reference, ground connections, and
digital inputs that occur just prior to latching the output of the analog comparator. Therefore, during any single conversion
for an n-bit SAR converter, there are n windows in which large external transient voltages can easily affect the conversion
result. Such glitches might originate from switching power supplies, nearby digital logic, and high power devices. The
degree of error in the digital output depends on the reference voltage, layout, and the exact timing of the external event.
The error can change if the external event changes in time with respect to the timing of the critical n windows.
With this in mind, power to the ’AIC26 must be clean and well bypassed. A 0.1-
F ceramic bypass capacitor must be placed
as close to the device as possible. A 1-
F to 10-F capacitor may also be needed if the impedance between the ’AIC26
supply pins and the system power supply is high.
A bypass capacitor on the VREF pin is generally not needed because the reference is buffered by an internal op amp,
although it can be useful to reduce reference noise level. If an external reference voltage originates from an op amp, make
sure that it can drive any bypass capacitor that is used without oscillation.
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| TLV320AIC26IRHBG4 | 功能描述:接口—CODEC Octal Bus Trnscvr With 3-State Outputs RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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| TLV320AIC26IRHBRG4 | 功能描述:接口—CODEC Lo-Pwr Stereo Codec RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TLV320AIC27 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO AUDIO CODEC |
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