TDA4470-M Datasheet, PDF (9/16 Pages) TEMIC Semiconductors – Multistandard Video-IF and Quasi Parallel Sound Processing

TDA4470-M
Parameters
Output resistance
Sound IF output voltage
(5.5 MHz output voltage)
Weighted signal to noise ratio:
(CCIR 468)
Ripple rejection
AF output-AM
DC output voltage
Output resistance
AF output voltage
Total harmonic distortion
Signal to noise ratio
Ripple rejection
SIF input selector switch
Control voltage:
input 1 active
input 2 active
Switching current
Test Conditions / Pins
See note 1
v_in = 10 mV
Ref. signal:
v_in = 10 mV;
FM dev. = ±27 kHz
f_mod = 1 kHz;
tested with the double
FM demod. U2860B;
B/G modulated VIF signal
Black screen: Channel 1/2
Grid pattern: Channel 1/2
Grey screen 50%: Channel
1/2
See note 1, Pin 23/Pin 24
Pin 25
See note 1
m = 54%
f_mod = 1 kHz and 12.5 kHz
Reference: m = 54 %,
f_mod = 1 kHz,
22 kHz low pass filter
See note 1, Pin 23/Pin 25
Pin 3
See note 12
Symbol
R_out
v_out
Min.
180
S/N
S/N
S/N
RR
35
see note 11
V_DC
R_out
v_oAF
400
THD
S/N
RR
28
V_SW
2.0
0
I_SW
Typ.
150
250
60/58
54/52
60/57
2.2
150
500
1
65
±100
Max.
350
Unit
W
mV_RMS
dB
dB
dB
dB
V
W
630 mV_RMS
2
%
dB
dB
V_S
V
0.8
V
mA
Notes
1.) _{This parameter is given as an application information and not tested during production.}
2.) _{In VCR mode the VIF- and SIF path is switched off.}
3.) _{Adjustment of turn over point (delayed tuner AGC) with external resistor Rtop or external voltage Vtop possible.}
4.)
w w ^{Resonance circuit of VCO (fo = 38.9 MHz): CVCO = 8.2 – 10 pF,}
Coil L_VCO with unloaded Q-factor Q_o 60 for an oscillator voltage 100 mV_RMS at Pin 20 – 21
(e.g. TOKO coil 7 KM, 292 XNS - 4051Z)
5.) _{The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit.}
6.) _{a (1.07) = 20 log (4.43 MHz component/1.07 MHz component); a (1.07) value related to black-white signal}
input signal conditions: picture carrier = 0 dB, colour carrier = –6 dB, sound carrier = –24 dB
7.) _{Without external control at Pin 13 the IC automatically operates in mode 1:}
⇒ negative modulated video-IF signals and FM/NICAM sound signals.
8.) _{Without control voltage at Pin 19 falling AFC curve is automatically selected.}
9.) _{With open circuit at Pin 14 the L’ switch is not active.}
10.) _{Picture carrier PC = 38.9 MHz; sound carrier SC1 = 33.4 MHz, SC2 = 33.16 MHz;}
PC/SC₁ =13 dB; PC/SC₂ = 20 dB; PC unmodulated (equivalent to sync. peak level).
11.) _{Sound carrier SC = 32.4 MHz, modulated with fmod = 1 kHz, m = 54%; vin =10 mV}
12.) _{Without control voltage at Pin 3 the SIF input 1 is automatically selected.}
TELEFUNKEN Semiconductors
9 (16)
Rev. A2, 15-Oct-96
Preliminary Information