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AS3502 Datasheet(PDF) 2 Page - ams AG

Part # AS3502
Description  13-BIT LINEAR FEATURE CODEC WITH ANALOGUE FRONTEND
PDF  29 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3502 Datasheet(HTML) 2 Page - ams AG

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REV. M
Page 2
September 1998
AS3502
Pinout Diagramme
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AV DD
CAP
MIC1+
MIC1-
MIC2-
MIC2+
N.C.
POR
VREF
DV DD
SCL
SDI
SDO
RXD
SPK-
SPK+
AV SS
EP-
EP+
TRO-
TRO+
GNDD
MCLK
CS
SCLK
TXD
TXS
RXS
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28 Pin SOIC
A S3502
1
3
6
12
14
16
45
42
40
38
34
MIC2-
MIC2+
VREF
DVDD
PO R
CS
EP+
TRO -
TRO +
G NDD
MCLK
64 pin TQ FP
Pin Description
Pin #
Name
Type
Function
1
AVDD
SI
Analogue Positive Supply Voltage Input
2
CAP
AO
Filter Capacitor Output
This pin requires to be connected to an external blocking capacitor of app. 47µF
and is internally connected to the potential divider of the analogue ground genera-
tion circuit.
3
4
MIC1-
MIC1+
AI
AI
Differential Microphone 1 Inputs
These two pins are differential inputs to the analogue input multiplexer of the gain
programmable microphone amplifier with an input impedance of approx. 60 k
Ω.
5
6
MIC2-
MIC2+
AI
AI
Differential Microphone 2 Inputs
These two pins are differential inputs to the analogue input multiplexer of the gain
programmable microphone amplifier with an input impedance of approx. 60 k
Ω.
7
N.C.
8
VREF
AO
Microphone Reference Voltage Output
This pin provides a stabilized reference voltage for an electret microphone of
approx. 2V.
9
DVDD
SI
Digital Positive Supply Voltage Input



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