TDA3827 Datasheet, PDF (7/12 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
SYMBOL
PARAMETER
CONDITIONS
B_AF2
dV/dt
∆V₁₃
α_mute
α_7/6
small signal bandwidth
slew rate (pin 13)
offset-voltage between any two
source selector positions
AF suppression at mute
crosstalk attenuation
at −1 dB
Source selector control (see Fig.5)
V₈
voltage for internal selection of
AF-input (pin 6)
I₈
selection input current
V₈
voltage for external selection of
AF-input (pin 7)
I₈
selection input current
V₈
voltage for mute active
I₈
input current
SCART switch and level control
V_15(rms)
Z₁₅
G_17-15
G_max
∆G_V
V₁₇
I₁₇
Z₁₇
C_L
V_17(rms)
B_AF3
THD
AC input signal (RMS value)
input impedance
voltage gain
maximum voltage gain
volume control range
DC voltage
DC output current
dynamic output impedance
capacitive output load (pin 17)
output signal (RMS value)
noise voltage (RMS value)
small signal bandwidth (pin 17)
distortion (pin 17)
V₁₆ = 4.1 V
V₁₆ = 5.0 V
see Fig.7
THD ≤ 1 %
B_noise = 20 kHz
at −3 dB
at maximum gain
∆V₁₇
offset voltage between internal and
SCART
V₁₆
control voltage
minimum gain −80 dB;
see Fig.7
I₁₆
α_6,7/15
control current
crosstalk attenuation between
IF-stage and control-stage
IF sound modulated;
SCART switch on;
source-selector on
position input 1
MIN.
100
1
−
80
70
1/3 V_P
−
2/3 V_P
+0.7
40
0
−10
−
50
−1.5
+ 4.0
80
−
−
−
−
−
−
50
−
−
0.7
−
80
TYP.
−
−
5
MAX.
−
−
20
UNIT
kHz
V/µs
mV
90
−
dB
76
−
dB
−
2/3 V_P
V
−0.7
−
200
µA
−
V_P
V
−
600
µA
−
1/3 V_p−1 V
−
−500
µA
500 1000
mV
80
−
kΩ
0
+ 1.5
dB
+ 5.0 + 6.0
dB
86
−
dB
2.3 −
V
−
−1
mA
−
10
Ω
−
1500
pF
1.0 1.1
V
100 −
µV
100 −
kHz
0.5 1.0
%
5
20
mV
1.0 −
V
−
50
µA
90
−
dB
March 1991
7