TDA2540 Datasheet, PDF (3/7 Pages) STMicroelectronics – IF AMPLIFIER WITH DEMODULATOR AND AFC

TDA2540 - TDA2541
ELECTRICAL OPERATING CHARACTERISTICS (continued)
Tamb = 25 °C; V (11 – 13) = 12 V; f = 38.9 MHz (unless otherwise specified)
Symbol
Parameter
S/N
Signal to Noise Ratio (V_I = 10mV) (see note 1)
B
Bandwidth of Video Amplifier (– 3dB)
dG
Differential Gain
dφ
Differential Phase
V12-13 Carrier Signal at Video Output (VI = 10mV)
V_12-13 2nd Harmonic of Carrier at Video Output (V_I = 10mV)
Intermodulation at 1.1MHz (blue) (see Figures 2 and 3)
Intermodulation at 1.1MHz (yellow) (see Figures 2 and 3)
Intermodulation at 3.3MHz (blue) (see Figures 2 and 3)
V14-13 VCR Switches Off Output at : (VCR = low Level)
White Spot Inverter Threshold Level (see Figure 1)
White Spot Insertion Level (see Figure 1)
Noise Inverter Threshold Level (see Figure 1)
Noise Insertion Level (see Figure 1)
I4
Tuner AGC output Current Range
V_14-13
I₄
Tuner AGC Output Voltage
Tuner AGC Output Leakage Current
TDA2541 V_14-13 = 11V, V_4-13 = 12V
TDA2540 V_14-13 = 5V, V_4-13 = 12V
∆V5-13
∆f
AFC Output Voltage Swing (∆f = 100 kHz)
Change of Frequency at AFC Output (voltage swing of 10V)
V6-13
AFC Switches OFF (AFC = low level) at :
V_6-13
AFC Switches LOW (AFC = High level) at :
V_5-13
AFC Zero = Signal Output Voltage (minimum gain)
Note :
1.
S
N
=
V_O (black to
V_N ⋅ (RMS at B
white)
= 5MHz)
(dB)
Min.
50
46
46
46
Typ.
58
6
4
2
4
20
60
50
54
6.6
4.7
1.8
3.8
0 to 10
Max.
10
10
30
30
1.1
0.3
15
10
11
100 200
2.5
3.2
4
6
8
Figure 1 : Video Output Waveform Showing White Spot and Noise Inverter Threshold Levels
Unit
dB
MHz
%
%
mVRMS
mV_RMS
dB
dB
dB
V
V
V
V
V
mA
V
µA
V
kHz
V
V
V
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