NIPPON PRECISION CIRCUITS INC.

NIPPON PRECISION CIRCUITS-1

OVERVIEW

SM8220/SM8221

Calling Number Identification Receiver IC

The SM8220/SM8221 Calling Number Identification

Receiver IC is a CMOS integrated circuit, which provides

an interface to various calling information delivery services

such as Calling Number Delivery (CND) and Calling

Name Delivery (CNAM) compatible with the Bellcore

GR-30-CORE. The device also contains a power down cir-

cuit, a ring detect circuit and a carrier detect circuit for eas-

ier system implementation.

FEATURES

•Compatible with Bellcore GR-30-CORE

•Integrated band pass filter

•FSK demodulator

Bell 202 and ITU-T V.23

•High input sensitivity: −48 dBm typical

•Ring detect output

•Carrier Detect Output (SM8220)

•Power down mode: 1µA power down current

•Uses 3.579545 MHz crystal (SM8220) or external

clock source

•Power supply voltage: 3V to 5.5V

•Low power consumption

•Molybdenum-gate CMOS process

•Package

SM8220: 16 pin SOP, 16 pin DIP

SM8221: 8 pin SOP, 8 pin DIP

APPLICATIONS

•Calling Number Delivery service

•Adjunct Boxes

•Telephone Answering Machines

•Feature Phones

•Fax Machines

•Computer Interface Products

1

9

16

8

TIP

RING

AGND

RDIN

RDRC

RDET

PDWN

VDD

FOUT

DMIN

DOUT

NC

CDET

OSCOUT

GND

OSCIN

/CLKIN

1

9

16

8

SM8220S (16pin SOP)

SM8220P (16pin DIP)

1

4

5

8

TIP

RING

PDWN

GND

VDD

DOUT

CDET

CLKIN

1

4

5

8

SM8221S (8pin SOP)

SM8221P (8pin DIP)

TIP

RING

AGND

RDIN

RDRC

RDET

PDWN

VDD

FOUT

DMIN

DOUT

NC

CDET

OSCOUT

GND

OSCIN

/CLKIN

TIP

RING

PDWN

GND

VDD

DOUT

CDET

CLKIN