TDA8213 Datasheet, PDF (3/8 Pages) STMicroelectronics – VIDEO & SOUND IF SYSTEM

TDA8213
ELECTRICAL CHARACTERISTICS
(Tamb = 25^oC, VCC = 9V, IF input = 10mVRMS top sync, D = 90%, Video BW = 5MHz,
Sound carrier input : 5.5MHz, 10mV_RMS, f_m = 1kHz, Audio BW = 20kHz, ∆f = ± 25kHz,
Volume attenuation = 0dB, unless otherwise specified)
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
IF AMPLIFIER
AGC range
IF - sensitivity (RMS)
R input differential
C input Stray
Video out -3dB
Guaranteed by process
58 64 67
dB
70
µV
1 1.5 2
kΩ
2
pF
DEMODULATED VIDEO OUTPUT
S/N video (BW = 5MHz)
Intermodulation 1.07MHz
Detected video output peak to
peak (positive)
Top synchro output level
Video Bandwidth with output filter
Differential phase
Differential gain
White noise clamp
White noise insertion
Video output current capability
Residual output carrier (RMS)
IF
inp.
=
10mV_RMS
,
20
log₁₀
(WH − BL)
N_RMS
49
55
dB
AGC open loop, Picture carrier = 0dB,
50
dB
Chrominance carrier = -3.2dB,
Sound carrier = -20dB
1.8 2 2.4
V
-3dB, see Figures 1 and 2
Referred to the video output
see Figure 6
At 38.9MHz
At 77.8MHz
1.9
V
7
MHz
3 7 Degree
37
%
4.5
V
3.2
V
1.2 2 2.6 mA
10 mV
20 mV
AFC
AFC slope
AGC CIRCUIT
With R_Load = 200kΩ, see Figure 3
25 40 60 mV/kHz
Maximum I charge
Maximum I discharge
I_{CH /} I_DISCH Ratio
550 900 1200 µA
14 20 26
µA
45
-
TUNER AGC
Sinked Current
Slope
Suitable for Mosfet-NCH
RTD = 0 ÷ 10kΩ
1.15 2
2.6 mA
600 µA/dB
DEMODULATED AUDIO OUTPUT
Detected output audio signal (RMS)
120 270 350 mV
Total harmonic distorsion
0.5 2
%
Amplitude modulation rejection
m = 30%
40 53
dB
2nd IF sound sensitivity -3dB FM
detected audio signal (RMS)
200
µV
S+ N
N
∆f = ± 25kHz for signal
50 60
dB
∆f= 0 after deemphasis (BW = 20kHz)l
Thermal drift of volume
0.05
dB
o_C
Input resistance limiter
400 560 720
Ω
Volume Control versus V9
See Figure 4
V9 = 4.5V
V₉ = 2.5V
V9 = 0.9V
0
dB
12 18 24
dB
65 74
dB
3/8