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TDA5051A

Home automation modem

Philips Electronics 

Philips Semiconductors

Home automation modem

Product specification

TDA5051A

Table 1 Clock oscillator parameters

OSCILLATOR

FREQUENCY

fosc

6.080 to 9.504 MHz

CARRIER FREQUENCY

fcr

95 to 148.5 kHz

CLOCK OUTPUT

FREQUENCY

1⁄2fosc

3.040 to 4.752 MHz

EXTERNAL COMPONENTS

C1 = C2 = 27 to 47 pF;

Rp = 2.2 to 4.7 MΩ;

XTAL = standard quartz crystal

Table 2 Calculation of parameters depending on the clock frequency

SYMBOL

PARAMETER

fosc

oscillator frequency

fCLKOUT

fcr

tsu

clock output frequency

carrier frequency/digital filter tuning

frequency

set-up time of the shaped burst

th

hold time of the shaped burst

tW(DI)(min) minimum pulse width of DATAIN signal

tW(burst)(min) minimum burst time of VO(DC) signal

tc(AGC)

AGC time constant

tsu(demod) demodulation set-up time

th(demod) demodulation hold time

CONDITIONS

with on-chip oscillator: frequency of the crystal

quartz; with external clock: frequency of the

signal applied at OSC1

1⁄2fosc

1⁄64fosc

UNIT

Hz

Hz

Hz

2-f--c-3--r or 1--f--4o---s7---c-2-

s

-2f--c-3--r or 1--f--4o---s7---c-2-

s

tsu + -f-1c---r

s

tW(DI)(min) + th

s

2--f--5o---s1---c-4-

s

3--f--2o---s0---c-0- (≈max.)

s

3--f--8o---s0---c-0- (≈max.)

s

1999 May 31

11

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