Datasheet

TEF6901A_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 20 March 2008 87 of 107
NXP Semiconductors
TEF6901A
Integrated car radio
V
MPXAMIN(M)
noise blanker sensitivity
at MPXAMIN input
(peak value of noise
pulses)
t
pulse
=10µs; f
pulse
= 100 Hz
NBS[1:0] = 00 - 65 - mV
NBS[1:0] = 01 - 100 - mV
NBS[1:0] = 10 - 125 - mV
NBS[1:0] = 11 - 160 - mV
V
LEVEL(M)
noise blanker sensitivity
at LEVEL output
(peak value of noise
pulses) (test mode)
t
pulse
=10µs; f
pulse
= 100 Hz
NBL[1:0] = 00 - 10 - mV
NBL[1:0] = 01 - 25 - mV
NBL[1:0] = 10 - 36 - mV
NBL[1:0] = 11 - 50 - mV
AM audio part
t
sup(min)
minimum suppression
time
- 200 - µs
M
AM
noise blanker sensitivity;
triggered from pulses at
MPXAMIN slew rate
NBS[1:0] = 00 - 16.5 - V/ms
NBS[1:0] = 01 - 18.6 - V/ms
NBS[1:0] = 10 - 21 - V/ms
NBS[1:0] = 11 - 23.5 - V/ms
Weak signal processing
Detectors
V
eqUSN
/∆f USN equivalent voltage
to frequency deviation
ratio
see Figure 24;
f
MPXAMOUT
= 150 kHz;
V
MPXAMOUT
= 250 mV;
HCMP = 1
[1]
USS[1:0] = 00 - −0.06 - V/kHz
USS[1:0] = 01 - −0.08 - V/kHz
USS[1:0] = 10 - −0.12 - V/kHz
USS[1:0] = 11 - −0.16 - V/kHz
V
eqWAM
/V
LEV(p-p)
WAM equivalent voltage
to peak-to-peak voltage
on pin LEVEL ratio
see Figure 24;
V
LEVEL
= 200 mV (p-p) at
f = 21 kHz on the level
voltage; HCMP = 1
[1]
WAS[1:0] = 00 - −7.5 - -
WAS[1:0] = 01 - −10 - -
WAS[1:0] = 10 - −15 - -
WAS[1:0] = 11 - −20 - -
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