2003 Oct 21 14
Philips Semiconductors Product specification
Car radio integrated signal processor TEF6894H
Weak signal processing
DETECTORS
V
eq(USN)
USN sensitivity equivalent
level voltage
see Fig.5; f
MPXRDS
= 150 kHz;
V
MPXRDS
= 250 mV (RMS);
HCMP = 1; note 2
USS[1:0] = 00 − 2.5 − V
USS[1:0] = 01 − 2 − V
USS[1:0] = 10 − 1.5 − V
USS[1:0] = 11 − 0.5 − V
V
eq(WAM)
WAM sensitivity
equivalent level voltage
see Fig.6; V
LEVEL
= 200 mV (p-p) at
f = 21 kHz on the level voltage;
HCMP = 1; note 2
WAS[1:0] = 00 − 2.5 − V
WAS[1:0] = 01 − 2 − V
WAS[1:0] = 10 − 1.5 − V
WAS[1:0] = 11 − 0.5 − V
t
LEVEL(attack)
level detector attack time
(soft mute and HCC)
see Table 24; LETF = 0; SEAR = 0
LET[1:0] = 00 − 3 − s
LET[1:0] = 01 − 3 − s
LET[1:0] = 10 − 1.5 − s
LET[1:0] = 11 − 0.5 − s
see Table 24; LETF = 1; SEAR = 0
LET[1:0] = 00 − 0.5 − s
LET[1:0] = 01 − 0.17 − s
LET[1:0] = 10 − 0.06 − s
LET[1:0] = 11 − 0.06 − s
search mode; SEAR = 1 − 60 − ms
t
LEVEL(decay)
level detector decay time
(soft mute and HCC)
see Table 24; LETF = 0; SEAR = 0
LET[1:0] = 00 − 3 − s
LET[1:0] = 01 − 6 − s
LET[1:0] = 10 − 1.5 − s
LET[1:0] = 11 − 1.5 − s
see Table 24; LETF = 1; SEAR = 0
LET[1:0] = 00 − 0.5 − s
LET[1:0] = 01 − 0.5 − s
LET[1:0] = 10 − 0.17 − s
LET[1:0] = 11 − 0.06 − s
search mode; SEAR = 1 − 60 − ms
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT