Figure 8, Figure 9, Tda5051a – Philips TDA5051A User Manual
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TDA5051A
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Product data sheet
Rev. 5 — 13 January 2011
12 of 29
NXP Semiconductors
TDA5051A
Home automation modem
t
W(burst)(min)
minimum burst time of V
O(DC)
signal t
W(DI)(min)
+ t
h
s
t
c(AGC)
AGC time constant
2514/f
osc
s
t
su(demod)
demodulation set-up time
3200/f
osc
(max.)
s
t
h(demod)
demodulation hold time
3800/f
osc
(
≈max.)
s
(1) t
W(DI)
> t
W(DI)(min)
(2) t
W(DI)(min)
= t
su
+ 1/f
cr
(3) t
W(DI)(min)
< t
su
; wrong operation
Fig 8.
Relationship between DATA_IN and TX_OUT (see
)
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
h
)
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
002aaf044
t
W(burst)
t
su
0
V
O(DC)
t
h
t
W(burst)(min)
TX_OUT
t
W(DI)
t
W(DI)(min)
DATA_IN
(1)
(2)
(3)
t
W(burst)
t
su
t
h
100 %
002aaf045