TDA8120B Datasheet, PDF (3/6 Pages) STMicroelectronics – MULTISTANDARD VIDEO AND SOUND IF SYSTEM

TDA8120B
ELECTRICAL CHARACTERISTICS (VS = 12V, Tamb = 25°C)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
VIDEO IF SECTION VI = 10 mVRMS (black field), FO = 38.9MHz ; unless otherwise specified
Vs Supply Voltage (Pins 4 and 9)
10.8 12 13.2 V
I_s
Supply Current
V_I= 0
V_{8 H} Top White Level
V_I = 0, R_L = 1.5kΩ
V_{8 L} Top Synchronous Level
V8 Video Output B/G
Modulation Depth, D = 90%, RL = 1.5kΩ
V8 Video Output L
RL = 1.5kΩ, M = 100%
∆V₈ Video Output Variation between M = 100%
Standards B/G and L
120
mA
5.5 6 6.5 V
2.7 3 3.3 V
2.2 3 3.4 Vpp
2.2 3 3.4 Vpp
±2
%
– I₈ Output Current
I8
Input Current
R_L = 1.5kΩ
4
mA
2
mA
I14 Tuner AGC Current Capability
S/N Signal to Noise Ratio
B = 5MHz, D = 90%
4.5
mA
50
dB
∆V_I
B
V_16–17
AGC Range
Bandwidth
Input Sensitivity for Full Output
Signal
∆V₈ = 1dB, D = 90%
∆V₈ = – 3dB, D = 90%
D = 90%
60
7
50
dB
MHz
µV
V8 Carrier Leakages
Fo = 38.9MHz
Fo = 77.8MHz
20
mV
50
mV
dG Differential Gain
Subcarrier Modulated Staircase Video
Signal, D = 90%
10 %
dφ Differential Phase
Subcarrier Modulated Staircase Video
Signal, D = 90%
10 degree
dIM Intermodulation Product
Video Carrier Relative Level = 0dB
50
dB
1.07MHz
Chroma Subcarrier Relative Level = – 3.2dB
Sound Carrier Relative Level = – 20dB
R_i Input Resistance
(between Pins 16 and pin 17)
1.5
kΩ
C_i Input Capacitance
(between Pins 16 and pin 17)
2
pF
QUASI SPLIT SOUND CHANNEL OR FRENCH SOUND CHANNEL (see notes 1 and 2)
V20–21
∆V_i
V5
I₅
Z5
R_i
Ci
S/N
V₁
I₁
Z₁
S/N
Input Sensitivity for Full Output R Channel Missing
Signal (between Pins 20 and 21)
AGC Range
Output Voltage Standard B/G
∆V₅ = 1dB, R Channel Missing
RL = 600Ω, AC Coupled, FO = 5.5MHz
Output Current
Small Signal Output Impedance FO = 5.5MHz or FO = 5.74MHz
(QSS)
Input Resistance
(between Pin 21 and Pin 20)
Input Capacitance
(between Pin 21 and Pin 20)
Noise Ratio QSS (after SIF
limitation and FM demodulation)
FO = 5.50MHz
FO = 5.74MHz
Channel R or Channel L Switched off
Fm = 1kHz, ∆f = ± 30kHz
Carrier Modulated with Syncs. Pulses Only.
CCIR 468-2 Recommendant
Output Voltage Standard L
Output Current
AF Output Impedance (L)
Noise Ratio AM Standard L
BN = 20kHz
50
60
100
2.5
1.5
2
60
58
0.58 0.7
2.5
46
µV
dB
mVRMS
mA
50 kΩ
kΩ
pF
dB
1 V_RMS
mA
50 Ω
dB
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