TDA4445A Datasheet, PDF (3/6 Pages) STMicroelectronics – SOUND IF AMPLIFIER

TDA4445A - TDA4445B
ABSOLUTE MAXIMUM RATINGS
Symbol
V_CC
I_CC
Ve xt
Supply Voltage Range
Supply Current
External Voltages
Parameter
V_{e xt}
P_{to t}
Tj
Tamb
Tstg
External Voltages
TDA4445A - TDA4445B
TDA4445B
Power Dissipation
Junction Temperature
Ambient Temperature Range
Storage Temperature Range
Pin 11
Pin 11
Pin 3
Pin 12
Pin 5
Pin 6
Value
Unit
15
V
70
mA
12
V
8
V
8
V
8
V
1
W
125
°C
0, + 70
°C
– 25, + 125
°C
THERMAL DATA
Symbol
Rth(j-a)
Parameter
Junction-ambient Thermal Resistance
Value
70
Unit
°C/W
ELECTRICAL OPERATING CHARACTERISTICS
Tamb = + 25°C, VCC = 12V (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
DC CHARACTERISTICS
VCC Supply Voltage
ICC Supply Current (V3 = 3.5V)
VO DC Output Voltage (V3 = 3.5V)
I
Output DC Current (V₃ = 3.5VV₁₁ = 12V)
R
Input Impedance
C
Input Impedance
V
Switch off Control Voltage for VTR Mode
I
Switch off Control Current for VTR Mode
Pin 13
10 12 15 V
Pin 11
45 60 mA
Pin 12
4.25 5 5.75 V
Pin 12
1
2 mA
Pins 1-16
2
kΩ
Pins 1-16
2
pF
Pin 3
9
10 V
Pin 3
150 µA
AGC CHARACTERISTICS
∆_GIF IF AGC Range
62
dB
QUASI PARALLEL SOUND OPERATION
(fPC = 38.9MHz, fSC1 = 33.4MHz, fSC2 = 33.16MHz, PC/SC1 = 13dB, PC/SC2 = 20dB, PC unmodulated)
VI
Min. Input Voltage (5.5MHz - Output Signal - 3dB)
Pins 1-16
70
µV_eff
VI
Max. Input Voltage (5.5MHz - Output Signal + 1dB)
Pins 1-16
90
mVe ff
VO Sound-IF-output Voltage (V1-16 = 20mVeff SC unmodulated)
Pin 12
5.5MHz Output Voltage
200
5.74MHz Output Voltage
100
400 mV_eff
300 mV_eff
Signal to noise ratio measured according to CCIR 468-2
Picture Modulation Ratio 90%, Reference signal (V_1-16 = 10mV),
FM-frequency deviation30kHz ¨
Out 1 350mVRMS
fmod = 1kHz, measured at audio-output
Out 2 350mVRMS
Pin 12
S + N Black Screen (1. Channel/2. Channel)
N
Grid Screen (1. Channel/2. Channel)
AM DEMODULATI0N (TDA4445B only) (f_SC = 39.2MHz, m = 80%, f_mod = 1kHz)
VI
Min. Input Voltage (Audio Output Signal - 3dB)
Pins 1-16
VO
Output DC Voltage (V1-16 = 10mVeff unmodulated)
Pin 6
I
Output DC Current (V₆ = 7.5V, V₃ = 3.5V)
Pin 6
d
Distortion (V_1-16 = 10mV, f_mod = 1kHz , m = 80%)
Pin 6
VO
AF Output Voltage (V1-16 = 100mVeff, m = 50% , fmod = 10kHz) Pin 6
55/50
dB
45/40
dB
70
µV_eff
3.3
4.5 V
0.3
1.2 mA
2.5 4
%
500 700 900 mVeff
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