TDA3845 Datasheet, PDF (5/18 Pages) NXP Semiconductors – Quasi split-sound circuit and AM demodulator

Philips Semiconductors
Quasi split-sound circuit and AM
demodulator
Objective specification
TDA3845; TDA3845T
CHARACTERISTICS
V_P1 = 5 V (note 11); T_amb = 25 °C; all measurements are referenced to ground (pin 13); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
supply voltage
V_P1
pin 14
V_P2
pin 11 (not for TDA3845T)
I_tot
total supply current
IF amplifier
R_1-16
C_1-16
V_1-16(RMS)
input resistance
input capacitance
minimum IF input voltage
(RMS value)
note 1
V_1-16(RMS) maximum IF input voltage
(RMS value)
note 2
∆G
gain control range
G_v3-16
B_IF
V_1-16
gain control voltage range
IF bandwidth
DC potential
−3 dB
Intercarrier mode (FM mode; standard B/G) notes 3, 4 and 5
Reference amplifier
V_8-9(p-p)
picture carrier amplitude
(peak-to-peak value)
R_8-9
operating resistance
V_8-9
DC potential
Intercarrier mixer and output stage
V_12(RMS)
output signal (RMS value)
at 5.5 MHz
at 5.74 MHz
B₁₂
intercarrier bandwidth
at −1 dB
at −3 dB
residual video AM on intercarrier
signal
note 6
R₁₂
V₁₂
I_12(peak)
output resistance
DC potential
permissible AC output current
(peak value)
note 7
I₁₂
permissible DC output current
4.5
5.0
8.8
V
10.8 12.0 13.2 V
−
40
48
mA
−
2
−
kΩ
−
2.5
−
pF
−
70
100
µV
70
100
−
mV
60
63
−
dB
1.5
−
3.0
V
50
70
−
MHz
−
1.7
−
V
−
270
−
mV
−
4
−
kΩ
−
3.9
−
V
70
100
−
mV
32
45
−
mV
−
8
−
MHz
−
9
−
MHz
−
3
10
%
−
30
−
Ω
−
1.8
−
V
−
−
±0.7 mA
−
−
−2
mA
January 1993
5