900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




Intersil Electronic Components Datasheet

CD22204 Datasheet

5V Low Power Subscriber DTMF Receiver

No Preview Available !

Data Sheet
CD22204
February 1999 File Number 1696.4
5V Low Power Subscriber DTMF Receiver
The CD22204 complete dual tone multiple frequency (DTMF)
receiver detects 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 reference) and a bias
resistor. Extremely high system density is possible through
the use of the Alternate Time Base (ATB) output of a crystal
connected CD22204 receiver to drive the time bases of up to
10 additional receivers. This is a monolithic integrated circuit
fabricated with low power, complementary symmetry CMOS
processing. It only requires a single power supply.
The CD22204 employs state-of-the-art ‘‘switched-capacitor’’
filter technology, resulting in approximately 40 poles of filtering
and digital circuitry on the same CMOS chip. The analog input
is preprocessed by 60Hz reject and bandsplitting filters and
then zero-cross detected to provide AGC. Eight bandpass
filters detect the individual tones. Digital processing is used to
measure the tone and pause durations and provides the
correctly coded and timed digital outputs. The outputs
interface directly to standard CMOS circuitry and are three-
state enabled to facilitate bus oriented architectures.
Ordering Information
PART
NUMBER
CD22204E
TEMP.
RANGE (oC)
PACKAGE
0 to 70 14 Ld PDIP
PKG. NO.
E14.3
Functional Diagram
7
ANALOG IN
11
ATB
6
XEN
XIN
10
LOW B/P
FILTERS
HIGH B/P
FILTERS
CHIP
CLOCKS
VOLTAGE
9 REG./REF.
XOUT
4
VDD
8
VSS
NOTE: Pin numbers are for PDIP.
5
NC
12
DV
2
D1
1
D2
14
D4
13
D8
3
EN
Features
• No Front End Band Splitting Filters Required
• Single Low Tolerance 5V Supply
• Three-State Outputs for Microprocessor Based
Systems
• Detects all 16 Standard DTMF Digits
• Uses Inexpensive 3.579545MHz Crystal
• Excellent Speech Immunity
• Output in 4-Bit Hexadecimal Code
• Excellent Latch-Up Immunity
Pinouts
CD22204 (PDIP)
TOP VIEW
D2 1
D1 2
EN 3
VDD 4
NC 5
XEN 6
ANALOG 7
IN
14 D4
13 D8
12 DV
11 ATB
10 XIN
9 XOUT
8 VSS
67 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


Intersil Electronic Components Datasheet

CD22204 Datasheet

5V Low Power Subscriber DTMF Receiver

No Preview Available !

CD22204
Absolute Maximum Ratings (Note 1)
Thermal Information
DC Supply Voltage (VDD) (Referenced to VSS Terminal) . . . . . . .7V
Power Dissipation
TA = 25oC (Derate above TA = 25oC at 6.25mW/oC . . . . . . . .65mW
Input Voltage Range
All Inputs Except Analog In . . . . . . . . . . . . . . (VDD 0.5V) to -0.5V
Analog in Voltage Range . . . . . . . . . . . . . (VDD 0.5V) to (VDD -10V)
DC Current into any Input or Output . . . . . . . . . . . . . . . . . . . . . .±20mA
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .175oC
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . .300oC
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Electrical Specifications 0oC TA 70oC, VDD = 5V ±10%
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNITS
Frequency Detect Bandwidth
Amplitude for Detection
Each Tone
±(1.5 + 2Hz)
-32
(Note 3)
±2.3
-
±3.5
% of fO
-2 dBm Referenced to 600
Minimum Acceptable Twist
Twist = H-L----oi--g-w--h----T-T---o-o--n-n---ee--
-8 - +4 dB
60Hz Tolerance
Dial Tone Tolerance
“Precise” Dial Tone
--
--
Talk Off
MITEL Tape #CM7291
-
Digital Outputs (except XOUT)
“0” Level, 400µA Load
0
Digital Inputs
“1” Level, 200µA Load
“0” Level
VDD -0.5
0
Supply Current
Noise Tolerance
“1” Level
TA = 25oC
MITEL Tape #CM7291
(Note 2)
0.7VDD
-
-
Input Impedance
VDD VIN (VDD -10)
100k//15pF
NOTES:
1. Unused inputs must be connected to VDD or VSS as appropriate.
2. Bandwidth limited (3kHz) Gaussian noise.
3. Lower minimum available, please contact sales office.
(-32dBm = 19.45mVRMS, -2dBm = 0.615mVRMS)
2
-
-
-
-
10
-
300k
0.8
0
-
0.5
VDD
0.3VDD
VDD
20
-12
-
VRMS
dB Referenced to Lower
Amplitude Tone
Hits
V
V
V
V
mA
dB Referenced to Lowest
Amplitude Tone
68


Part Number CD22204
Description 5V Low Power Subscriber DTMF Receiver
Maker Intersil Corporation
PDF Download

CD22204 Datasheet PDF






Similar Datasheet

1 CD22202 5V Low Power DTMF Receiver
Intersil Corporation
2 CD22203 5V Low Power DTMF Receiver
Intersil Corporation
3 CD22204 5V Low Power Subscriber DTMF Receiver
Intersil Corporation





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy