Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 86 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
S/N signal-to-noise ratio f
MPXAMIN
= 20 Hz to 15 kHz;
referenced to 1 kHz at
91 % FM modulation;
DEMP = 1
70 - - dB
THD total harmonic distortion FM mode; DEMP = 1;
measured with 15 kHz
brick-wall low-pass filter
f
MPXAMIN
= 200 Hz to
15 kHz
- - 0.3 %
V
MPXAMIN
= 50 %; L; pilot on - - 0.3 %
V
MPXAMIN
= 50 %; R;
pilot on
- - 0.3 %
V
o(bal)
mono channel balance FM mode −1 - +1 dB
α
19
pilot signal suppression 9 % pilot; f
pilot
= 19 kHz;
referenced to 1 kHz at
91 % FM modulation;
DEMP = 1
40 50 - dB
α subcarrier suppression modulation off; referenced to
1 kHz at 91 % FM modulation
f
sc
= 38 kHz 35 50 - dB
f
sc
= 57 kHz 40 - - dB
f
sc
= 76 kHz 50 60 - dB
PSRR power supply ripple
rejection
FM mode; f
ripple
= 100 Hz;
V
CC(AC)
=V
ripple
= 100 mV
(RMS)
24 - - dB
∆V
out
frequency response FM mode
f
MPXAMIN
=20Hz −0.5 - +0.5 dB
f
MPXAMIN
=20kHz −0.5 - +0.5 dB
f
cut(de-em)
cut-off frequency of
de-emphasis filter
−3 dB point; see Figure 31
DEMP = 1 (τ =50µs) - 3.18 - kHz
DEMP = 0 (τ =75µs) - 2.12 - kHz
m
i(pilot)
pilot threshold
modulation for automatic
switching by pilot input
voltage
stereo
on - 4.0 5.5 %
off 1.3 2.7 - %
hys
pilot
hysteresis of pilot
threshold voltage
-2- dB
Noise blanker
FM part
t
sup(min)
minimum suppression
time
-15- µs
Table 111. Dynamic characteristics of the sound processor
…continued
V
CC
= 8.5 V; T
amb
=25 ° C; see Figure 43; all AC values are given in RMS; treble: 10 kHz filter frequency; treble = 0 dB;
bass: 60 Hz filter frequency; bass = 0 dB; f
audio
= 1 kHz; G
vol
= 0 dB; G
fader
= 0 dB; loudness off; standard output gain
(byte OUTPUT; bit OUTA = 0); R
L
= 10 k Ω ; C
L
= 1 nF; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
oL
V
oR
---------