M-982-02
Precise Call Progress Tone Detector
Features
•
Precise detection of call progress tones
•
Linear (analog) input
•
Digital (CMOS compatible), tri-state outputs
•
22-pin DIP and 20-pin SOIC
•
Single supply 3 to 5 volt (low power CMOS)
•
Inexpensive 3.58 MHz crystal time base
•
Wide dynamic range (30 dB)
•
Lower power consumption (power-down mode)
•
425 Hz detection
Description
The M-982-02 is an integrated circuit precise tone
detector for special-purpose use in automatic following
of switched telephone calls. The circuit uses low-
power CMOS techniques to provide the complete fil-
tering and control required for this function. The basic
timing of the M-982-02 is designed to permit operation
with almost any progress tone system.The use of inte-
grated circuit techniques allows the M-982-02 to pack
the five filters for call progress following into a single
22-pin DIP or 20-pin SOIC. A 3.58 MHz crystal-con-
trolled time base guarantees accuracy and repeatabil-
ity.
The M-982-02 is an enhanced drop-in replacement for
the M-982-01. It has a wider operating voltage range
(down to 3V). It has lower power consumption under
normal operating conditions. In addition, a power-
down (PD) feature is provided to further reduce power
consumption when inactive. It includes a 425 Hz
detector to support common international call progress
requirement.
Applications
•
Automatic dialers
•
Dialing modems
•
Traffic
•
Measurement equipment
•
Test equipment
•
Service evaluation
•
Billing systems
Pin Diagram
Ordering Information
Part #
Description
M-982-02P
M-982-02S
M-982-02T
22-pin plastic DIP
20-pin plastic SOIC
20-pin plastic SOIC,Tape and Reel
Block Diagram
DS-M982-02-R4
www.clare.com
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CLARE [ CLARE, INC. ]
