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參數(shù)資料
| 型號(hào)： | LC78835 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | 18 Bits Digital Filter and D/A Converter for Digital Audio |
| 中文描述： | 18位數(shù)字濾波和D / A數(shù)字音頻轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 11/14頁(yè) |
| 文件大小： | 400K |
| 代理商： | LC78835 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)當(dāng)前第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)
Pulse-Width Modulation (PWM) D/A Converter
This is a 3-bit circuit that applies pulse width modulation to voltages V2 and V1 output from the R-string D/A
converter to produce an 8-way division. Depending on the value of the data in bits D8 to D6, one of the voltages,
V2 or V1, is output to the CH1OUT (or CH2OUT) pin.
Level Shift D/A Converter
The variable resistors VRH and VRL are connected in series to the two ends of the R-string D/A converter
resistance, configuring a 6-bit D/A conversion circuit. Depending on the values of the data in the LSBs (bits D5 to
D0), VRH and VRL change as follows.
(1) The sum of VRH and VRL is constant, irrespective of the data value.
(2) Irrespective of the data value, VRH and VRL are in the range of 0 to 63R/512 (where R is the unit resistance of
the R-string D/A converter) and resistance changes in R/512 steps in accordance with the data value.
This means that the R-string D/A converter outputs, V2 and V1, each vary in the range of 0 to 63
×
V/512 (
V =
(VH - VL)/512) in
V/512 steps.
— Vref H/L, REF H/L Pins
The voltage on the Vref pins, used to apply the reference voltage to the resistance strings, are usually set so that
VrefH = AV
DD
and VrefL = AGND. In addition, a 10 μF rated condenser connects REFH and AGND as well
as REFL and AGND. When VrefH = 5.0 V, VrefL = 0 V, the LC78835K on-chip RH and RL resistors
maximum output amplitude at 0 dB playback is output in the 3.0 Vp-p range extending from a minimum 0.6 V
to maximum 3.6 V.
No. 4624-11/14
LC78835K, 78835KM
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC78835K | 18 Bits Digital Filter and D/A Converter for Digital Audio |
| LC78835KM | 18 Bits Digital Filter and D/A Converter for Digital Audio |
| LC78836 | Digital Audio 16-Bit D/A Converter with On-Chip Digital Filters |
| LC78836M | Digital Audio 16-Bit D/A Converter with On-Chip Digital Filters |
| LC7883KM | 16-bit Digital Filter and Digital-to-analog Converters for Digital Audio |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC78835K | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:18 Bits Digital Filter and D/A Converter for Digital Audio |
| LC78835KM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:18 Bits Digital Filter and D/A Converter for Digital Audio |
| LC78835M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Digital-to-Analog Converter |
| LC78836 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Digital Audio 16-Bit D/A Converter with On-Chip Digital Filters |
| LC78836M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Digital Audio 16-Bit D/A Converter with On-Chip Digital Filters |
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