Document
APLESSEY
W Semiconductors.
TBA440N / TBA440P
TBA440N/P
VIDEO IF AMPLIFIER DEMODULATOR
The TBA440 (TBA440N for NPN tuners, TBA440P for PNP tuners) comprises a high-gain regulated video IF amplifier, a controlled demodulator andtwo low-resistance video outputs w i t h positive and negative signal as well as the complete key control and delayed tuner control.
ABSOLUTE MAXIMUM RATINGS
Supply voltage steady transitory
Voltage at pin 5 Voltage at pin 4 Voltage at pin 14 Operating ambient temperature Total power dissipation atTamb<55°C Ohmic resistance between pins: 8 and 9
15V 16.5V
20V 5V 5V
-10° to +60°C
7002m0Wa
IF l/P (DIFFERENTIAL) [ DECOUPLING [
J IF l/P (DIFFERENTIAL! ] DECOUPLING
0V [ CONTROL VOLTAGE DECOUPLING [
TUNER AGC [
TBA 440N | P
TUNER AGC THRESHOLD CONTROL [
GATING PULSE l/P [
DEMODULATOR TUNING
1 WHITE LEVEL PRESET ] »CC
! VIDEO 0/Pi
] SYNC. LEVEL CONTROL ] DEMODULATOR TUNING
DPI 6
FEATURES
Fig. 1 Pin connections
Complete Video IF in one IC High Sensitivity Positive and Negative Video Signals Gated AGC and Delayed AGC for Tuner White and Black Levels Separately Adjustable Ability to Control PIN Diode Attenuators
Fig. 2 TBA440 block diagram
141
TBA440N / TBA440P
ELECTRICAL CHARACTERISTICS
T«ft Conditioni (unless otherwise stated):
T a m b = +25°C Vcc = +'3V Reference point is pin 3 (OV)
Characteristic
Value Pin Units
Min. Typ. Max.
Conditions
Supply voltage, V c c Current consumption DC output voltage
White level deviation
a a
v v
, ,
,
2
/ /
av, av1
3 3
Resistance R 1 4 . 3 for A V ^ = 1V
AGC threshold V j o = sync pulse level for R10-11 = 0
Regulating slope R1 o-11 /V11
Sync, pulse level with async. or without gating pulses
Control current for tuner pre amp.
13 13 11 11 12 12
11, 13 12, 13 14 3
10,11
10, 11
11 5
10.5 28 4.1
OS
10
IF control voltage for max gain for mln gain
Gating pulse voltage Residual IF voltage Output current to earth
Output current to V13 Input impedance at max gain
at min gain
Input voltage for V ] 1 = 3V p-p Video bandwidth
AGC range Intermodulation
4 4 7 11,12 11, 12
11, 12 1 1 1
0 2.5
-2
52
13 40 5.1 6.2 1.1 2.5
0.15 0.05
1
1.2 4.5
0.2 15
50
1.8/2 1.9/0 100
7
58 55
15 V 52 mA Vcc: = 15V 6.1 V V i n = 0 V . R 1 4 = ° °
V V|„ = 0V,R14 = 0
1.8 V v i n = o v , r 1 4 = ~
V Vin = 0V,R14 = 0
kfi
V v10 = v,, kS2/V
V mA V 5 > 2V, 10dB after AGC (TBA440P)
10dB before AGC (TBA440N) 0.5 V
5V -5 V
mV 5 mA - 1 mA
kli/pF kO/pF
uv Input 6 0 n via 3:5 transformer
MHz dB dB Input 0.3 to 1.5V p-p
// /
// >
"11 3V Vcc-ISV 1 -3GMKJ &t * 3MHI
142
) 20 30 40 ATTENUATION (dB)
SO
Fig. 3 Noise figure v. attenuation (measured at video frequency}
v„.3v Vcc-uv I ' JtMHi ftQ »MOA
10 JO 10 50 ATTENUATION (dBI Fig. 4 Control voltage v. attenuation
TBA440N / TBA440P
0 -10 -M -10 -40 -SO ATTENUATION ( J_»7f
»N
4='
H^t
si
..Him®
Vcc 1i
1) TBAUOP FOR PNP TUNER
1I
1 = 0 ITUNER MAX GAIN) IilOm* ITUNER: MIN CAIN)
2) TBA UON FOR NPN TUNER
UIOmA ITUNER MAX GAIN)
1:0 (TUNER • MIN GAIN)
PNP TUNER PREAMP
NPH TUNER PREAMP
Fig. 7 IF application with TBA440P or TBA440N for CCIR standard (values in brackets for U.S. standard)
143
.