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參數(shù)資料
| 型號(hào)： | MSM7502 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | Multi-Function PCM CODEC |
| 中文描述： | 多功能的PCM編解碼器 |
| 文件頁(yè)數(shù)： | 5/35頁(yè) |
| 文件大?。?/td> | 196K |
| 代理商： | MSM7502 |
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Semiconductor
MSM7502
5/35
RMI, RMO0, RMO1
Receive main amplifier input and outputs.
RMI is the inverted input and RMO0 and RMO1 are the outputs of the receive main amplifier.
The output signal on RMO1 is inverted against RMO0 by a gain 1 (0 dB), so the earphone of a
handset is directly connected between RMO0 and RMO1. During the system power down, the
RMO0 and RMO1 outputs are in a high impedance state. The receive main amplifier gain is
determined by a resistor connected between RPO and RMI, and a resistor connected between
RMI and RMO0. The receive main amplifier gain varies between 0 and +20 dB in effect. A piezo-
receiver with an impedance greater than 1.2 k
W
is available.
If the adjusting of receive path frequency characteristics is required, insert the following circuit
for adjustment. During the whole system Power ON, the speech path from RMI to RMO0 and
RMO1 is disconnected and the output of RMO0 and RMO1 is at the SG level (VA/2). The speech
path is provided by processor control.
A circuit example for adjustment of frequency characteristics
RPO
RMI
R1
RMO0
Main amplifier gain without capacitors
G=R2
R1
C1
R2
C2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7503 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM7503GS-BK | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM7507-01 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7507-01GS-K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7507-01MS-K | 制造商:ROHM Semiconductor 功能描述: |
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