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SAA6588T Datasheet(PDF) 18 Page - NXP Semiconductors

Part No. SAA6588T
Description  RDS/RBDS pre-processor
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 18 page
background image
1997 Sep 01
18
Philips Semiconductors
Product specification
RDS/RBDS pre-processor
SAA6588
tdec(MRO)
decay time of the rectifier
C6 = 100 nF; R4 = 470 k
Ω−
50
ms
Gv(MPTH)
rectifier voltage gain;
VLVIN(rms) = 0.1 V;
fLVIN = 21 kHz
20
dB
Zo(MPTH)
output impedance at pin MPTH
150
200
250
Vo(MPTH)
output voltage swing at
pin MPTH
0.5
3.5
V
ZL(MPTH)
load impedance at pin MPTH
with respect to ground
5
−−
k
CL(MPTH)
load capacitance at pin MPTH
with respect to ground
−−
20
pF
Signal quality detector (pin MPX)
fco
cut-off frequency
85
90
95
kHz
PBRR
pass-band ripple rejection
−−
1dB
αsb
stop band attenuation
f = 40 kHz
30
−−
dB
VSTEP2-3(rms)
input voltage (RMS value) for
transition of signal quality
indication between step 2 and 3
(SQI = 0010 and 0011)
sensitivity = 0 dB
(SQS = 01111; see Table 10);
f = 100 kHz
85
mV
∆G
SQ
step size for signal quality input
gain
0.4
0.6
0.8
dB
CRGSQ
control range for signal quality
input gain
15.6
18.6
21.6
dB
tSQD
measuring time
after acknowledgement of the
I2C-bus transceiver
−−
850
µs
Pause detector (pins AFIN and PSWN)
Zi(AFIN)
input impedance
f = 10 kHz
−−
10
VI(AFIN)
DC input voltage
unloaded
Vref
V
Ith(rms)
AC input current for threshold
(RMS value)
PL1 = 1; PL0 = 1
3.1
4.4
6.2
µA
THpause(step)
step size for pause threshold
345dB
THpause(R)
control range for pause
threshold
10
12
14
dB
Ii(offset)
input offset current
−−
0.4
µA
tPON(min)
minimum time for pause
PT1 = 0; PT0 = 0
20.2
ms
PT1 = 0; PT0 = 1
40.4
ms
PT1 = 1; PT0 = 0
80.8
ms
PT1 = 1; PT0 = 1
161.7
ms
tPOFF(min)
minimum time for no pause
5
ms
∆t
time error (all values)
−−
1.0
ms
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
G
v(MPTH)
20 log
V
MPTH(DC)
V
LVIN(rms)
--------------------------
=




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