参数资料
型号: ISD5104X
厂商: WINBOND ELECTRONICS CORP
元件分类: 音频合成
英文描述: 240 SEC, SPEECH SYNTHESIZER WITH RCDG, UUC27
封装: LEAD FREE, DIE-27
文件页数: 27/89页
文件大小: 600K
代理商: ISD5104X
ISD5100 SERIES
Publication Release Date: May 16, 2007
- 33 -
Revision 1.4
7.4.6. Ana Out Description
Chip Set
ANA OUT+
ANA OUT–
*VO L
*FILTO
*SUM2
3 (AOS2,AOS1,AOS0)
* FTHRU
1
(AOPD)
*INP
*SUM1
(1 Vp -p m a x. from AUX INo r ARRAY)
(69 4 mVp-p max. fro m mi crop ho ne input)
INS0
15
14
13
12
11
10
98
76
54
32
10
AIG1
AIG0 AIPD
AXG1 AXG0 AXPD
AOS2 AOS1
AOS0 AOPD
OPS1 OPS0 OPA1 OPA0 VLPD
CFG0
7.4.7. Analog Inputs
Microphone Inputs
The microphone inputs transfer the voice signal to the on-chip AGC preamplifier or directly to the ANA
OUT MUX, depending on the selected path. The direct path to the ANA OUT MUX has a gain of 6
dB so a 208 mV p-p signal across the differential microphone inputs would give 416 mV p-p across
the ANA OUT pins. The AGC circuit has a range of 45 dB in order to deliver a nominal 694 mV p-p
into the storage array from a typical electric microphone output of 2 to 20 mV p-p. The input
impedance is typically 10k.
The ACAP pin provides the capacitor connection for setting the parameters of the microphone AGC
circuit. It should have a 4.7 F capacitor connected to ground. It cannot be left floating. This is
because the capacitor is also used in the playback mode for the AutoMute circuit. This circuit reduces
the amount of noise present in the output during quiet pauses. Tying this pin to ground gives
maximum gain; to VCCA gives minimum gain for the AGC amplifier but will cancel the AutoMute
function.
AOS2
AOS1
AOS
0
SOURCE
0
FTHRU
0
1
INP
0
1
0
VOL
0
1
FILTO
1
0
SUM1
1
0
1
SUM2
1
0
N/C
1
N/C
AOPD
CONDITION
0
Power Up
1
Power Down
*DIFFERENTIAL PATH
相关PDF资料
PDF描述
ISD5108EYI 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28
ISD5108EY 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28
ISD5108SYI 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28
ISD5108SY 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28
ISD5108X 480 SEC, SPEECH SYNTHESIZER WITH RCDG, UUC27
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