Silan

Semiconductors

SC9270C/D

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2001.04.27

2

BLOCK DIAGRAM

BIAS

CIRCUIT

18

9

6

Chip power

Chip bias

1

2

DIAL

TONE

FILTER

3

5

HIGH GROUP

FILTER

HIGH GROUP

FILTER

DIGITAL

DETECTION

ALGORITHM

CODE

CONVERTER

AND

LATCH

11

12

13

14

STEERING

LOGIC

16

15

17

8

7

10

St

GT

Chip clock

Chip ref

Zero crossing detectors

-

+

+

-

IN+

GS

IN-

Q1

Q2

Q3

Q4

TOE

StD

ESt

St/GT

OSCO

OSCI

4

INH

Figure 1. block diagram

Characteristic

Symbol

Value

Unit

Power Supply Voltage

6V

Voltage on any pin

--

V

Current at any pin

--

10

mA

Operating temperature

Topr

-40~+85

°C

Storage Temperature

Tstg

-65~+150

°C

Package power dissipation

500

mW

Note: 1. Absolute maximum ratings are those values beyond which damage to the device may occur.

2. Unless otherwise specified, all voltages are referenced to ground.

3. Power dissipation temperature derating: -12 mV / from 65°C to 85°C

Parameter

Symbol

Conditions

Min

Max

Unit

Positive Supply Voltages

1.2

5

--

V

Oscillator Clock Frequency

fc

--

--

3.579545

--

MHz

Oscillator Frequency Tolerance

∆fc

--

--

±0.1

--

%

Note: 1. Voltages are with respect to ground(Vss), unless otherwise stated.

2 .Typical figures are at 25

°C and are for design aid only: not guaranteed and not subject to production testing.