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| TDA8041H Datasheet, PDF (4/16 Pages) NXP Semiconductors – Quadrature demodulator controller | |||
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Philips Semiconductors
Quadrature demodulator controller
Preliminary speciï¬cation
TDA8041H
PINNING
SYMBOL
LCKTC
LCKO
LCKTH
LCKIO
VDD(A)
VSS(A)
Vref(pos)
Vref(mid)
Vref(neg)
AFC2O
VSS2
AGCTC
AGCO
SWPO
CARTC
CARO
VSSA(C)
Iana
Qana
VDDA(C)
CLKRTC
CLKRO
CLKIX
PIN
DESCRIPTION
1 carrier lock time constant
2 carrier lock output
3 carrier lock threshold voltage
4 carrier lock indicator output
5 supply voltage for operational
ampliï¬ers
6 negative supply voltage for
operational ampliï¬ers
7 positive reference voltage for
converters
8 middle reference voltage for
converters
9 negative reference voltage for
converters
10 AFC 2 output
11 negative supply voltage 2
12 automatic gain control time
constant
13 automatic gain control output
14 sweep current output
15 carrier recovery time constant
16 carrier recovery output
17 analog negative supply voltage for
converters
18 analog input I
19 analog input Q
20 analog supply voltage for
converters
21 clock recovery time constant
22 clock recovery output
23 clock input from crystal circuit
(at double symbol rate)
SYMBOL
VSS1
CLKSR
QDO2
QDO1
QDO0
VSS(I/O)
VDD(I/O)
IDO2
IDO1
IDO0
VSSD
VDDD
AFC1
AFC2
BQN
SWEEP
TEST
Ibias
VDD(C)
VSS(C)
LCKDAC
PIN
DESCRIPTION
24 negative supply voltage 1
25 clock output at symbol rate
26 Q digital output (bit 2)
27 Q digital output (bit 1)
28 Q digital output (bit 0)
29 negative supply voltage for digital
inputs/outputs
30 supply voltage for digital
inputs/outputs
31 I digital output (bit 2)
32 I digital output (bit 1)
33 I digital output (bit 0)
34 negative supply voltage for digital
section
35 supply voltage for digital section
36 AFC control switch 1 (1 = on;
0 = off)
37 AFC control switch 2 (1 = on;
0 = off)
38 BPSK/QPSK control switch
(1 = BPSK; 0 = QPSK)
39 sweep control switch (1 = on;
0 = off)
40 test control switch (1 = on; 0 = off)
41 input bias current for analog blocks
42 supply voltage for digital part of
ADC and DAC
43 negative supply voltage for digital
part of ADC and DAC
44 carrier lock DAC output
November 1994
4
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