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參數資料
| 型號： | AK4533 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Audio Codec with Touch Screen Controller |
| 中文描述： | 音頻編解碼器與觸摸屏控制器 |
| 文件頁數： | 1/40頁 |
| 文件大小： | 473K |
| 代理商： | AK4533 |
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[ASAHI KASEI]
<Revision 0.9a>
July 00
0
Featues
[ADC]
1ch mono16-bit ADC (For Microphone)
1
st
MIC Amplifier: 20dB Fixed Gain
2
nd
Amplifier: from -8dB to +27.5dB (0.5dB step)
AGC function
Analog Performance:
-
S/N: 82dBA @ fs=44.1kHz, MIC_GAIN=20dB(AGC=off, 0dB)
[Sampling Frequency]
Audio : from 8kHz to 44.1kHz
[DAC]
2ch(stereo) DAC
Single End output
Digital Attenuator
Analog Performance
-
S/N: 88dBA@fs= 44.1kHz
[Touch Screen/Battery Check]
SAR type A/D Converter: 12bit(10bit accuracy)
-
S/H circuit
-
4-1 Multiplex (2ch :Touch Screen, 2ch : Check for the battery)
Low Power Current: 20mA
Low Voltage Operation
- Analog, Digital: 3.0V
Small Package: 48pin LQFP
[General Description]
The AK4533 is audio codec with touch screen controller. The AK4533 incorporates several functions into one-chip; the
position detection of the touch screen, the measurement of battery voltage, the record of the voice, and the playback of audio
data.
The AK4533 has monaural A/D converter with AGC, and stereo D/A converter with digital attenuator. As codec can operate
from 8kHz to 44.1kHz, the AK4533 can playback the sound like MP3 with high quality. On-chip digital attenuator with 1.5dB
step can control DAC volume without the increase of CPU load. As AGC with 0.5dB step automatically controls voice input
level to the appropriate level, the voice can be recorded clearly. As the AK4533 also has on-chip 20dB fixed gain preamplifier
in addition to AGC, no other external preamplifier for microphone is required.
The AK4533 controls the voltages which are supplied to two pairs of electrode of touch screen. As the AK4533 also has
12bit/100kHz sampling SAR type A/D converter, it is possible to detect the pressed location by two A/D conversions. 12 bit
digital code is output through serial interface. The AK4533 also has 2 analog channels as the input of Touch Screen A/D
converter. The main purpose is for the measurement of the battery voltage.
As the AK4533 is small package, and can operate from 2.7V with low power consumption, it is suitable for mobile products,
especially PDA.
Audio Codec with Touch Screen Controller
AK4533
相關PDF資料 |
PDF描述 |
|---|---|
| AK4534 | 16Bit CODEC with MIC/HP/SPK-AMP |
| AK4534VN | 16Bit CODEC with MIC/HP/SPK-AMP |
| AK4536 | 16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4536VN | 16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4537 | 16-Bit ツヒ Stereo CODEC with MIC/HP/SPK-AMP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AK4534 | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit CODEC with MIC/HP/SPK-AMP |
| AK4534VN | 制造商:AKM 制造商全稱:AKM 功能描述:16Bit CODEC with MIC/HP/SPK-AMP |
| AK4534VQ | 功能描述:IC CODEC 16BIT MIC/HP/SPK-AMP 制造商:akm semiconductor inc. 系列:* 零件狀態:上次購買時間 標準包裝:1,000 |
| AK4536 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4536VN | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
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