SC72131
PLL FOR DIGITAL TUNING SYSTEM(DTS)
DESCRIPTION
The SC72131 is phase-locked loop (PLL) LSI for digital turning
systems (DTS).
The LSI is use to configure high-performance digital tuning
systems,such as radio/cassette players. They allow high-performance
AM/FM tuners to be implemented easily.
SDIP-22-300-1.778
FEATURES
* Built-in prescalers. Operate at input frequency ranging from
10~160MHz during FMIN input and at 0.5~40MHz during AMIN
input.
* 12 possible reference frequencies (with 4.5 or 7.2 MHz crystal) 1, 3,
5, 9, 10, 3.125, 6.25, 12.5, 15, 25, 50 and 100 kHz
* Built-in 20bit general-purpose counter for such as measuring
intermediate frequency (IF), IF input frequency ranging from
0.4M~12MHz.
* Has an unlock detector circuit an dead zone control circuit and an
deadlock clear circuit
* Built-in MOS transistor for forming an active low-pass filter
* 4 N-channel open-drain output ports (OFF withstanding Voltage:
13V) and 2 input or output ports.
* Serial data I/O
— All functions controlled through 4 serial bus lines
* Operating ranges
— Supply voltage.....................… 5.0±0.5 V
— Operating temperature........–40 to +85° C
* Packages
— SDIP-22-300-1.78
— SOP-20-300-1.27
* Digital Tuning Systems
SOP-20-300-1.27
ORDERING INFORMATION
Part No.
SC72131
SC72131S
Package
SDIP-22-300-1.778
SOP-20-300-1.27
APPLICATIONS
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0
2004.08.03
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