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CD22357AE Scheda tecnica(PDF) 1 Page - Harris Corporation

Il numero della parte CD22357AE
Spiegazioni elettronici  CMOS Single-Chip, Full-Feature PCM CODEC
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Produttore elettronici  HARRIS [Harris Corporation]
Homepage  http://www.harris.com
Logo HARRIS - Harris Corporation

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4-165
Semiconductor
February 1999
Pinout
CD22354A, CD22357A
(PDIP)
TOP VIEW
Functional Block Diagram
FULL-FEATURE PCM CODEC
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
BCLKX
MCLKX
DX
FSX
GSX
VFX1+
VFX1-
TSX
V-
GND
VFRO
V+
FSR
DR
BCLKR/
CLKSEL
MCLKR/
PDN
RCV
VREF
XMIT
VREF
COMPARATOR
XMIT
CLOCK
CIRCUIT
BAND
GAP
REFERENCE
XMIT DIGITAL
RCV DIGITAL
3
VFRO
+5V
-5V
V+
V-
11
10
12
13
9
8
5
7
6
4
DX
FSX
FSR
DR
PARALLEL
TO
SERIAL
S.A.R.
SIGN
BIT INT.
TRANSMIT
D/A
LADDER
RECEIVE
FILTER
FILTER
RECEIVE
D/A LADDER
FILTER
XMIT
LOW
PASS
FILTER
XMIT
HIGH
PASS
FILTER
14
+
15
2
BCLKR/
CLKSEL
MCLKR/
PDN
MCLKX
SERIAL
TO
PARALLEL
D/A
REGISTER
BCLKX
TSX
16
1
SMOOTHING
GND
VFX1+
VFX1-
GSX
ANTI-ALLAS
LOW PASS
RCV
CLOCK
CIRCUIT
CD22354A,
CD22357A
CMOS Single-Chip,
Full-Feature PCM CODEC
File Number
1682.4
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1999
Description
The CD22354A and CD22357A are monolithic silicon-
gate, double-poly CMOS integrated circuits containing
the band-limiting filters and the companding A/D and D/A
conversion circuits that conform to the AT&T D3/D4
specifications
and
CCITT
recommendations.
The
CD22354A provides the AT&T
µ-law and the CD22357A
provides the CCITT A-law companding characteristic.
The primary applications for the CD22354A and
CD22357A are in telephone systems. These circuits
perform the analog and digital conversions between the
subscriber loop and the PCM highway in a digital
switching system. The functional block diagram is
shown below.
With flexible features, including synchronous and
asynchronous operations and variable data rates, the
CD22354A and CD22357A are ideally suited for PABX,
central office switching system, digital telephones as
well as other applications that require accurate A/D and
D/A conversions and minimal conversion time.
Ordering Information
PART
NUMBER
TEMP.
RANGE (oC)
PACKAGE PKG. NO.
CD22354AE
-40 to 80
16 Ld PDIP E16.3
CD22357AE
-40 to 80
16 Ld PDIP E16.3
Features
• Meets or Exceeds All AT&T D3/D4 Specifications and CCITT
Recommendations
• Complete CODEC and Filtering Systems: No External Components
for Sample-and-Hold and Auto-Zero Functions. Receive Output Fil-
ter with (SIN X)/X Correction and Additional 8kHz Suppression
• Variable Data Clocks - From 64kHz . . . . . . . . . . . . . . . . . . . . . 2.1MHz
• Receiver Includes Power-Up Click Filter
• TTL or CMOS-Compatible Logic
• ESD Protection on All Inputs and Outputs
Applications
• PABX
• Central Office Switching Systems
• Accurate A/D and D/A Conversions
• Digital Telephones
• Cellular Telephone Switching Systems
• Voice Scramblers - Descramblers
• T1 Conference Bridges
• Voice Storage and Retrieval Systems
• Sound Based Security Systems
• Computerized Voice Analysis
• Mobile Radio Telephone Systems
• Microwave Telephone Networks
• Fiber-Optic Telephone Networks
[ /Title
(CD22
354A,
CD223
57A)
/Sub-
ject
(CMO
S Sin-
gle-
Chip,
Full-
Fea-
ture
PCM
CODE
C)
/
Author
()
/Key-
words
(Har-
ris
Semi-
con-
ductor,
RSLIC
18,
Tele-
com,
SLICs,
SLACs
, Tele-
phone,
Tele-
phony,
WLL,
Wire-
less
Local
Loop,
OBSOLETE
PRODUCT
NO RECOMMENDED
REPLA
CEMENT
Call
Central
Applications
1-800-442-7747
or email:
centapp@harris.com


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