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參數資料
| 型號： | CD22202 |
| 廠商： | Intersil Corporation |
| 英文描述： | 5V Low Power DTMF Receiver |
| 中文描述： | 5V的低功耗雙音多頻接收器 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 49K |
| 代理商： | CD22202 |
4-245
Description
The CD22202 and CD22203 complete dual-tone multiple
frequency (DTMF) receivers detect a selectable group of 12
or 16 standard digits. No front-end pre-filtering is needed.
The only externally required components are an inexpensive
3.579545MHz TV “colorburst’’ crystal (for frequency refer-
ence) and a bias resistor. Extremely high system density is
possible through the use of the clock output of a crystal con-
nected CD22202/CD22203 receiver to drive the time bases
of additional receivers. This is a monolithic integrated circuit
fabricated with low-power, complementary symmetry CMOS
processing. It only requires a single low tolerance power
supply.
The CD22202 and CD22203 employ state-of-the-art circuit
technology to combine the digital and analog functions on
the same CMOS chip using a standard digital semiconductor
process. The analog input is preprocessed by 60Hz reject
and band splitting filters and then hard limited to provide
AGC. Eight Bandpass filters detect the individual tones. The
digital post processor times the tone durations and provides
the correctly coded digital outputs. Outputs interface directly
to standard CMOS circuitry and are three-state enabled to
facilitate bus oriented architectures.
January 1997
Pinout
CD22202, CD22203
(PDIP)
TOP VIEW
D1
EN
IN1633
XEN
ANALOG IN
10
11
12
13
14
15
16
17
18
9
8
7
6
5
4
3
2
1
D2
D4
D8
CLRDV
DV
ATB
XIN
XOUT
V
DD
V
SS
V
SS
HEX/B28
ED (203 ONLY),
NC (202)
Functional Diagram
HIGH B/P
FILTERS
LOW B/P
FILTERS
VOLTAGE
REG./REF.
C
G
CHIP
CLOCKS
ATB
XEN
INI633
13
8
12
11
5
10
7
4
D
P
6
15
14
2
1
18
17
16
3
CLRDV
DV
D1
D2
D4
D8
EN
XIN
XOUT
HEX/B28
ED-203
NC-202
V
SS
V
DD
P
B
ANALOG IN
9
Features
Central Office Quality
No Front End Band Splitting Filters Required
Single, Low Tolerance, 5V Supply
Detects Either 12 or 16 Standard DTMF Digits
Uses Inexpensive 3.579545MHz Crystal for Reference
Excellent Speech Immunity
Output in Either 4-Bit Hexadecimal Code or Binary
Coded 2-of-8
Synchronous or Handshake Interface
Three-State Outputs
Excellent Latch-Up Immunity
Ordering Information
PART
NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
CD22202E
0 to 70
18 Ld PDIP
E18.3
CD22203E
0 to 70
18 Ld PDIP
E18.3
File Number
1695.3
DTMF Receivers/Generators
CD22202, CD22203
5V Low Power DTMF Receiver
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
Intersil Corporation 1999
相關PDF資料 |
PDF描述 |
|---|---|
| CD22202E | 5V Low Power DTMF Receiver |
| CD22203 | 5V Low Power DTMF Receiver |
| CD22204 | 5V Low Power Subscriber DTMF Receiver |
| CD22204E | R8C Series, 23 Group, WDTO 48P6Q-A |
| CD22301 | Monolithic PCM Repeater |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CD22202_02 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V Low Power DTMF Receiver |
| CD22202E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V Low Power DTMF Receiver |
| CD22203 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V Low Power DTMF Receiver |
| CD22203E | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:5V Low Power DTMF Receiver |
| CD22203ES2497 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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