Datasheet SM8220P, SM8220S, SM8221P, SM8221S Datasheet (NPC)

Download

Page 1

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 circuit, a ring detect circuit and a carrier detect circuit for easier 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

PINOUT

(Top View)

220

TIP

RING

AGND

RDIN

RDRC

RDET

PDWN

VDD FOUT DMIN DOUT NC CDET OSCOUT

GND

OSCIN /CLKIN

SM8220S (16pin SOP) SM8220P (16pin DIP)

S M

220

S MS

TIP

RING

PDWN

GND

VDD DOUT CDET CLKIN

SM8221S (8pin SOP) SM8221P (8pin DIP)

221

S M

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

221

Page 2

NIPPON PRECISION CIRCUITS-2

SM8220/SM8221

PACKAGE DIMENSIONS

(Unit: mm)

TIP

RING

OSCIN* /CLKIN

OSCOUT*

PDWN

RDIN*

FOUT* DMIN*

DOUT

CDET

RDET*

Band Pass

Filter

FSK

Demodulator

Power Down Control

and Clock Generator

Carrier Detect

(SM8221)

AGND* VDD

GND

*: Not available for SM8221.

RDRC*

BLOCK DIAGRAM

19.05

2.54

0.25

2.54 0.46 1.52

3.68 to 4.32

0.38 to 1.02

6.35

3.18 3.30

7.49 to 8.13

8.13 to 9.40

0 to 8

9.89 0.09

6.00 0.20

3.90 0.09

1.375 0.275

1.27

0.25

0.41 0.05

0.10

1.55 0.20

0.175 0.075

0.13 0.06

0.84 0.43

SM8220S (16 pin SOP) SM8220P (16 pin DIP)

SM8221S (8 pin SOP) SM8221P (8 pin DIP)

8.89

2.54

0.25

2.54 0.46

1.52

3.68 to 4.32

0.38 to 1.02

6.35

3.18 3.30

7.49 to 8.13

8.13 to 9.40

1.27

0.10 to 0.25

4.80 to 4.98

3.81 to 3.99

0.36 to 0.46

0.19 to 0.25

1.35 to 1.75

1.10 to 1.65

0.41 to 1.27

0 to 8

5.80 to 6.20

Page 3

NIPPON PRECISION CIRCUITS-3

SM8220/SM8221

PIN DESCRIPTIONS

Number Name i/o Function

SM8220 SM8221

1 1 TIP i

2 2 RING i

3 - AGND o 4 - RDIN si 5 - RDRC od

6 - RDET o

7 3 PDWN si

8 4 GND 9 5 OSCIN i

/CLKIN

10 - OSCOUT o

11 6 CDET o 12 - NC 13 7 DOUT o

14 - DMIN i

15 - FOUT o

16 8 VDD -

(Note) si: Schmitt Triger Input, od: Open Drain Output.

Tip Input: This pin is connected to the tip side of the twisted pair telephone wires. This pin must be DC isolated from the phone line. Ring Input: This pin is connected to the ring side of the twisted pair telephone wires. This pin must be DC isolated from the phone line. Analog Ground: 1/2 V

DD voltage output. This pin must be grounded through 0.1 µF capacitor.

Ring Detect Input: The attenuated ring signal is connected to this pin for the ring detection. Ring Detect RC Terminal: An RC network will be connected to this pin to set time delays for

the ring signal detection. Ring Detect Output: This pin is an output of a schmitt trigger buffer which input is connected to RDRC pin. The low level at this pin indicates that the ring signal is detected. Power Down Control: This pin must be kept at low level for the normal operation. When it is high, the device will be in the power down. Under the power down mode, OSCOUT, CDET and DOUT pins are set to high level and AGND, FOUT pins are set to high impedance.

Device Ground: This pin is connected to the system ground. Crystal Oscillator Input: A crystal will be connected between this pin and OSCOUT pin.

This pin may be driven from an external clock source. Crystal Oscillator Output: A crystal will be connected between this pin and OSCIN pin. This pin must be kept open when OSCIN pin is driven from an external clock source. Carrier Detect Output: When low, this output indicates that a valid carrier present on the line. No connection pin. Data Out: This pin presents the output of the demodulator while CDET pin is low. When CDET pin goes high, this pin is held high. Demodulator Input: This pin is connected from FOUT pin through a 0.1µF capacitor. No other components should be connected to this pin. Band Pass Filter Output: This pin is connected to DMIN pin through a 0.1µF capacitor. No other components should be connected to this pin. Power Supply: Positive power supply pin.

Page 4

NIPPON PRECISION CIRCUITS-4

SM8220/SM8221

ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Condition Rating Unit

Supply Voltage V

DD −0.5 to 7.0 V

Input Voltage V

IN −0.3 to VDD+0.3 V

Input Current I

IN ±10 mA

Power Dissipation P

D 120 mW

Operating Temperature Range Ta −20 to 85 °C

Storage Temperature Range TSTG −40 to 125 °C

Soldering Temperature T

SLD 255 °C

Soldering Time

tSLD 10 sec

(GND= 0V unless otherwise noted)

ELECTRICAL CHARACTERISTICS

DC CHARACTERISTICS

Rating

Parameter Symbol Condition MIN TYP MAX Unit

DC Supply Voltage V

DD 3 5 5.5 V

Supply Current I

DD *1 1.7 3 mA

Power Down Current I

DPD *2 1 µA

Input Low Voltage1 V

IL1 OSCIN/CLKIN pin 0.3VDD V

OSCOUT= 0.8VDD

Input High Voltage1 VIH1 OSCIN/CLKIN pin 0.7VDD V

OSCOUT= 0.2VDD

Input Low Voltage2 VIL2 PDWN, RDIN, RDRC pin 2 0.3VDD V

Input High Voltage2 V

IH2 PDWN, RDIN, RDRC pin 0.75VDD 3V

Output Low Voltage V

OL DOUT, RDET, CDET, RDRC 0.4 V

pin, V

DD= 4.5V, IOL= 1.6mA

Output High Voltage V

OH DOUT, RDET, CDET pin 3.7 V

DD= 4.5V, IOH= −1.6mA

Input Leakage Current I

IN OSCIN/CLKIN, PDWN, RDIN −11µA

pin, V

DD= 5.5V, VIN= 0 or 5V

Output Leakage Current I

OFF RDRC pin, RDIN= 0V 1 µA

DD= 5.5V,VOH= 5.5V

Input DC Resistance R

IN TIP, RING pin, VDD= 5V 175 250 325 kΩ

Impedance measured from 1/2V

(VDD= 5±0.5 V, GND = 0 V, fCLK = 3.579545 MHz, Ta = −20 to 85 ˚C unless otherwise noted)

*1: OSCIN/CLKIN= 0V, PDWN= 0V, RDIN= 0V, RDRC= 0V, Other Input Pins= open *2: OSCIN/CLKIN= 0V, PDWN= V

DD, RDIN= 0V, RDRC= 0V, Other Input Pins= open

Page 5

NIPPON PRECISION CIRCUITS-5

SM8220/SM8221

AC CHARACTERISTICS

Rating

Parameter Symbol Condition MIN TYP MAX Unit

Input Sensitivity TIP, RING pin −48 dBm

TIP, RING pin V

DD= 5V −15 dBm

Input Level V

DD= 3V −18

Band Pass Filter Frequency Response 60Hz −80 dB

(relative to 1700 Hz @ −34 dBm 1200 Hz −1

input level) 2200Hz 0

4000Hz −43

≥10000Hz −54

Carrier Detect ON Sensitivity CD

ON CDET pin −48 −44 dBm

Carrier Detect OFF Sensitivity CD

OFF CDET pin −55 −51 dBm

Oscillator Frequency f

CLK −0.1% 3.579545 +0.1% MHz

(VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= −20 to 85 ˚C, 0dBm= 0.7746Vrms @ 600Ω unless otherwise noted)

TYPICAL BAND-PASS FILTER FREQUENCY RESPONSE

(Relative to 1700 Hz @ −34 dBm input level)

-100

-80

-60

-40

-20

0 1000 2000 3000 4000

Frequency (Hz)

Gain (dB)

SWITCHING CHARACTERISTICS

Rating

Parameter Symbol Condition MIN TYP MAX Unit

Power Down Low to

tDOSC 5ms

Oscillator Start Up

Power Down Low to

tSUPD 10 ms

FSK Data Detect

Carrier Detect Acquisition Time

tDAQ 10 ms

End of Data to Carrier Detect High

tDCH 10 ms

(VDD= 5.0V, GND= 0V, fCLK= 3.579545MHz, Ta= 25 ˚C, CL= 50pF unless otherwise noted)

Page 6

NIPPON PRECISION CIRCUITS-6

SM8220/SM8221

FUNCTIONAL DESCRIPTION

Bell 202 ITU-T V.23

Modulation Type Continuous - phase binary frequency shift keying (FSK)

Logical 1 (Mark) 1200 ± 12Hz 1300 ± 22Hz

Logical 0 (Space) 2200 ± 22Hz 2100 ± 22Hz Carrier Frequency 1700Hz 1700Hz Transmission rate 1200BPS 1200BPS

Data format serial, asynchronous serial, asynchronous

The SM8220/SM8221 Calling Number Identification Receiver IC is a device compatible with the Bellcore GR30-CORE for transmitting asynchronous voice-band data to Customer Premises Equipment (CPE) from a serving Stored Program Controlled Switching System (SPCS) or a Central Office (CO). This data transmission technique is

applicable in a variety of services such as Calling Number Delivery (CND), Calling Name Delivery (CNAM). With these services, a subscriber will have the ability to display a message containing the phone number of the calling party, the name of a calling party, the date and the time.

The data signaling interface should conform to Bell 202 and ITU-T V.23 specification, which is:

101010... 1 Data

1st Ring 2nd Ring

Channel

Seizure

Signal

Mark

Signal

Message

Type Word

Message

Length

Word

Message

Words

Checksum

Word

*: Mark bits

Single

Message

Format

101010... 1 Data

1st Ring 2nd Ring

Channel

Seizure

Signal

Mark

Signal

Message

Type Word

Message

Length

Word

Multi

Message

Format

Parameter

Type

Word

Parameter

Length

Word

Parameter

Words

Checksum

Word

Parameter

Type

Word

Parameter

Length

Word

* *

Parameter

Type

Word

Parameter

Length

Word

* *

Parameter

Words

Parameter

Words

*: Mark bits

Bellcore GR-30-CORE Data Format

Page 7

NIPPON PRECISION CIRCUITS-7

SM8220/SM8221

TIMING DIAGRAM

TYPICAL APPLICATION CIRCUIT

101010... 1 Data

1st Ring 2nd Ring

101010... 1 Data

INPUT

(TIP, RING)

PDWN

DOUT

OSCOUT*

RDRC*

RDET*

CDET

*: Not available for SM8221.

IH2

VIL2

tSUPD

tDAQ tDCH

tDOSC

Protection

Network

TIP RING AGND RDIN RDRC RDET PDWN GND

VDD

DOUT

DMIN

FOUT

CDET

OSCOUT

OSCIN

/CLKIN

SM8220

Controller

From TIP

From RING

0.001µF

91kΩ (240kΩ)

0.2µF

0.001µF 91kΩ (240kΩ)

0.1µF

470kΩ

33kΩ

270kΩ

0.2µF

10µF

0.1µF

+5V

LCD Driver

LCD Display

3.579545 MHz

( ) = When 3V range

Protection

Network

TIP RING PDWN GND

VDD

DOUT

CLKIN

SM8221

Controller

From TIP

From RING

0.001µF 91kΩ (240kΩ)

0.001µF

91kΩ (240kΩ)

10µF

+5V

LCD Driver

LCD Display

CDET

3.579545MHz

( ) = When 3V range

(Note)

When the Ring Detect feature of SM8220 is not used, always connect RDIN and RDRC pins to the system ground level. This will cut excess current drain from VDD under the normal and power down mode of operation. This diagram example is desingned to adapt to the specifications of United States. When it is used in other area, the constants may have to chenged appropriately.

Page 8

NIPPON PRECISION CIRCUITS-8

SM8220/SM8221

NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to

improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.

NIPPON PRECISION CIRCUITS INC.

4-3, FUKUZUMI 2 CHOME, KOTO-KU TOKYO,135-8430 JAPAN Telephon: +81-3-3642-6661 Facsimile: +81-3-3642-6698

NC9508DE 1998. 7

NIPPON PRECISION CIRCUITS INC.

Datasheet SM8220P, SM8220S, SM8221P, SM8221S Datasheet (NPC)

Specifications and Main Features

Frequently Asked Questions

User Manual