TDA3827 Datasheet, PDF (6/12 Pages) NXP Semiconductors – TV-sound demodulator circuit with SCART switches and AF control

Philips Semiconductors
TV-sound demodulator circuit with SCART
switches and AF control
Preliminary specification
TDA3827
CHARACTERISTICS
All voltages are measured to GND (pin 1); V_P = 5 V; V_IF = 10 mV; f_o = 5.5 MHz; f_AF = 1 kHz; ∆f = 50 kHz; T_amb = 25 °C;
measured in test circuit of Fig.4.; unless otherwise specified.
SYMBOL
PARAMETER
V_P
supply voltage.range (pin 18)
I_P
supply current (pin 18)
V₁₄
reference voltage
I₁₄
output current
IF limiting amplifier
V_i(rms)
input signal at pin 3
(RMS value)
R_3-1
V_2,3,4
input resistance
DC voltage
FM demodulator (Q_L = 20)
V_5(rms)
TC
AF-output signal (RMS value)
residual 2f_o-signal (RMS value)
temperature coefficient (pin 5)
α_AM
AM suppression
THD
Z_o
B_AF1
total harmonic distortion
output impedance (pin 5)
small signal bandwidth (pin 5)
(S+N)/N signal to weighted noise ratio
RR
ripple rejection
V_9,10
DC voltage
Source selector
V_{i 6,7(rms)}
Z_6,7
G_o
G_13/6,7
input signal (RMS value)
input impedance
open loop gain
gain
gain (typical application)
V₁₃
I₁₃
Z₁₃
C_L
V_13(rms)
DC voltage
DC output current
output impedance dynamic
capacitive output load (pin 13)
output signal (RMS value)
noise voltage (RMS value)
CONDITIONS
V_P = 5.0 V
V_P = 12.0 V
MIN.
4.5
−
−
2.2
−
TYP.
5.0
26
28
2.3
± 250
MAX.
13.2
30
32
2.4
−
UNIT
V
mA
mA
V
µA
−
3 dB below nominal AF −
level at pin 5
−
−
−
200
mV
30
50
µV
600 −
Ω
2.1 −
V
450
without de-emphasis −
−
f_AM = 400 Hz, m = 0.3, 50
V_i(rms) = 500 µV; Fig.8
see Fig.8
−
−
at −1 dB;
100
without de-emphasis
CCIR468-3, DIN45405; 73
see Fig.8
f_R = 70 Hz,
30
V_R = 100 mV_(p-p)
−
500 550
−
30
1
2
62
−
0.3 0.5
6.6 −
−
−
78
−
35
−
3.2 −
mV
mV
mV/K
dB
%
kΩ
kHz
dB
dB
V
−
50
−
see Fig.4
−
see Fig.1
−
−
−
−
−
handling THD < 0.1 % −
B_noise = 20 kHz
−
500 1000
mV
80
−
kΩ
60
−
dB
0
−
dB
6
−
dB
2.3 −
V
−
1.0
mA
−
10
Ω
−
1500
pF
1.0 1.1
V
20
−
µV
March 1991
6