Philips TDA5051A Manual de usuario descargar pdf (Pagina 12)

Product data sheet Rev. 5 — 13 January 2011 12 of 29

NXP Semiconductors

TDA5051A

Home automation modem

W(burst)(min)

minimum burst time of V

O(DC)

signal t

W(DI)(min)

+ t

c(AGC)

AGC time constant 2514/f

osc

su(demod)

demodulation set-up time 3200/f

osc

(max.) s

h(demod)

demodulation hold time 3800/f

osc

(≈max.) s

(1) t

W(DI)

W(DI)(min)

(2) t

W(DI)(min)

+1/f

(3) t

W(DI)(min)

; wrong operation

Fig 8. Relationship between DATA_IN and TX_OUT (see Table 8)

Table 8. Relationship between DATA_IN

and TX_OUT

X = don’t care.

PD DATA_IN TX_OUT

1 X high-impedance

0 1 high-impedance (after t

)

0 0 active with DC offset

Fig 9. Pulse shape characteristics

Table 7. Calculation of parameters depending on the clock frequency

…continued

Symbol Parameter Conditions Unit

002aaf04

W(burst)

O(DC)

W(burst)(min)

TX_OUT

W(DI)

W(DI)(min)

DATA_IN

(1) (2) (3)

W(burst)

100 %

002aaf04

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 28 29

TDA5051A 1

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Philips TDA5051A Manual de usuario Pagina 12

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