TDA3845 Datasheet, PDF (7/18 Pages) NXP Semiconductors – Quasi split-sound circuit and AM demodulator

Philips Semiconductors
Quasi split-sound circuit and AM
demodulator
Objective specification
TDA3845; TDA3845T
SYMBOL
PARAMETER
AM mode (standard L) note 9
S/N weighted in accordance with CCIR 468-3
V_6(RMS)
B_AF
THD
AF output signal (RMS value)
AF bandwidth
total harmonic distortion
(S +W)/W signal-to-weighted-noise ratio
R₆
V₆
I_6(peak)
output resistance
DC potential
permissible AC output current
(peak value)
I₆
permissible DC output current
Standard switch (note 4)
V₇
peak signal AGC (FM mode)
V₇
or switch open-circuit
V₇
mean signal AGC (AM mode)
I₇
switch current
at 0 V
at V_P1
at V_P2
Ripple rejection (note 13)
AM/AF signal
αRR
voltage ripple on V_P/
voltage ripple on output signal
FM phase noise
∆f(RMS) intercarrier signal
CONDITIONS
MIN. TYP. MAX. UNIT
−3 dB; note 12
note 10
note 7
440
550
0.02 −
−
1
50
56
−
200
−
1.8
−
−
−
−
660
mV
120
kHz
2
%
−
dB
−
Ω
−
V
±0.3 mA
−1
mA
V_P1 used
V_P2 used
1.8
−
1.8
−
−
−
−
−
−
−
via a 2.2 kΩ series resistor −
−
V_P1
V
5.5
V
0.8
V
−200 µA
10
µA
2.5
mA
30
40
−
dB
−
10
20
Hz
January 1993
7