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參數(shù)資料
| 型號(hào)： | BU8732AKV |
| 廠(chǎng)商： | Rohm CO.,LTD. |
| 元件分類(lèi)： | Codec |
| 英文描述： | CODEC IC for digital mobile phone |
| 中文描述： | 編解碼器集成電路數(shù)字移動(dòng)電話(huà) |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大小： | 159K |
| 代理商： | BU8732AKV |
BU8732AKV
Communication ICs
CODEC IC for digital mobile phone
1/10
BU8732AKV
BU8732AKV is a PCM codec IC for digital cellular phones. This includes plenty of analog input / output functions such as
a 14bit precision linear.
μ
/ A-LAW codec, a microphone amplifier with two systems, amplifiers for speaker and earphone
and a switch transistor for driving a ringer. This IC is the most suitable for both PDC system and CDMA system cellular
phones.
z
Application
Digital cellular phones with CDMA system, Digital cellular phones with PDC system.
z
Features
1) +3V single power supply. (V
DD
=2.7 to 3.3V)
2) 14bit precision linear
μ
/ A-LAW codec.
3) Transmission filter of the codec block is in conformity to the ITU-T recommendation G. 714.
4) Built-in PLL circuit for system clock generation.
5) Built-in DSP I/F which is in conformity with PDC and N-CDMA.
6) Arbitrary setting of the clock frequency of PCM data transmission is allowed :
μ
/ A-LAW
64kHz to 2048kHz
Linear 128kHz to 2048kHz
7) Plenty of input / output analog functions :
Two systems of built-in microphone amplifier (differential input type, single input type)
Built-in speaker amplifier for receiver (32
BTL type)
Built-in speaker amplifier for earphone (32
single type)
Built-in speaker amplifier for REXT of call receiving system (600
)
Built-in electronic volumes for gain adjustment. (Call-receiving system, call sending system, TONE system)
Built-in input / output circuit for data signal which allows external connection.
Pop noise of REXT earphone and receiver outputs at the time of switching on and off the power supply is reduced
by means of soft mute.
8) A built-in function to generate DTMF signals and musical scale tones is provided in the tone signal generating block.
9) Built-in switch transistor for driving a ringer.
10) VQFP 48 pin package.
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