TDA4472-A Datasheet, PDF (6/14 Pages) TEMIC Semiconductors – Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sound (QPS) Processing

TDA4472-A
TELEFUNKEN Semiconductors
Parameters
Test Conditions / Pins Symbol Min.
Typ.
Max.
Unit
Tuner-AGC
Pin 10, 11 see note 3
Available tuner-AGC
current
I_tun
1
2
4
mA
Allowable output voltage
V₁₁
0.3
IF slip-tuner AGC
current I_tun 10% to 90%
∆G_IF
IF input signal for mini-
R_top = 10 kW (V_top = 4.5 V)
v_in
mum take over point
13.5
V
8
10
dB
4
mV
IF input signal for maxi- R_top = 0 (V_top = 0.8 V)
v_in
40
mV
mum take over point
Variation of the take over
point by temperature
FPLL and VCO
∆T_amb = 55°C
∆v_in
VIF-AGC: G_v = 46 dB
Pin 18, 20, 21, 26
2
3
dB
Max. oscillator frequency
Vision carrier capture range
Oscillator drift (free run-
ning) as function of tem-
perature
for carrier generation
f_vco = 38.9 MHz
C_vco = 6.8 pF
see note 4,
∆Τ_amb = 55°C,
C_vco = 6,8 pF,
f_vco = 38.9 MHz
f_vco
70
∆f_cap
±1.5
±2
MHz
MHz
∆f/_∆T
–0.3
%
Video output
Pin 12
Output current – source
– sunk
±I₁₂
2
5
mA
3
mA
Output resistance
Video output signal
Sync level
Zero carrier level
(ultra white level)
see note 1
peak to peak value
V₈ = 3 V
R_out
100
W
v_o,_vid
1.8
2.0
2.2
V
V_sync
1.2
V
V_DC
3.4
V
Supply voltage influence
on the ultra white level
∆V/_V
1
%/V
Video bandwidth (–3 dB)
Video frequency response
over the AGC range
R_L ≥ 1 kW, C_L ≥ 50 pF
B
6
∆Β
8
MHz
2.0
dB
Differential gain error
DG
2
5
%
Differential phase error
DP
2
5
deg
Intermodulation
f = 1.07 MHz
see note 5
a_IM
52
60
dB
Video signal to noise ratio
Residual vision carrier fun-
damental wave 38.9 MHz
and second harmonic
77.8 MHz
weighted, CCIR-567
S/_N
56
60
dB
v_res1
2
10
mV
Lower limiting level
below sync level
∆V_lim1
400
mV
Upper limiting level
above ultra white level
∆V_lim2
600
mV
Ripple rejection
see note 1 /pin 23/pin 12
RR
35
dB
AFC output
Pin 22
Control slope
Frequency drift by temper-
ature
related to the picture
carrier frequency
∆I/_∆f
0.7
mA/kHz
0.25
0.6
%
6 (14)
Rev. A1: 26.07.1995