Philips Semiconductors
Product specification
RDS/RBDS pre-processor
SAA6588
CHARACTERISTICS ANALOG PART
VDDA = VDDD = 5 V; Tamb = 25 °C; measurements taken in Fig.1; unless otherwise specified.
SYMBOL
Supply
VDDA
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
analog supply voltage
4.5
5.0
5.5
0.5
V
VDDA − VDDD voltage difference between
−
0
V
analog and digital supply
IDD(tot)
Vref
total supply current
−
14.0
2.5
25
−
mA
V
reference voltage
VDDA = 5 V
2.25
−
2.75
−
Zo(Vref)
output impedance at pin Vref
kΩ
MPX input (signal before the capacitor on pin MPX)
Vi(MPX)(rms)
RDS amplitude (RMS value)
∆f = ±1.2 kHz RDS-signal;
1
−
−
mV
∆f = ±3.2 kHz spurious signal
Vi(max)(p-p)
maximum input signal capability f = 57 ±2 kHz
200
1.4
2.8
3.5
33
−
−
−
−
−
−
−
−
−
−
mV
V
(peak-to-peak value)
f < 50 kHz
f < 15 kHz
f > 70 kHz
V
V
Ri(MPX)
input resistance
f = 0 to 100 kHz
kΩ
57 kHz band-pass filter
fc
centre frequency
Tamb = −40 to +85 °C
56.5
2.5
17
31
40
50
40
−
57.0
3.0
20
−
57.5
3.5
23
−
kHz
kHz
dB
dB
dB
dB
dB
Ω
B−3dB
GMPX
αsb
−3 dB bandwidth
signal gain
f = 57 kHz
∆f = ±7 kHz
f < 45 kHz
f < 20 kHz
f > 70 kHz
stop band attenuation
−
−
−
−
−
−
Ro(SCOUT)
output resistance at pin SCOUT f = 57 kHz
30
60
Comparator input (pin CIN)
Vi(min)(rms) minimum input level
f = 57 kHz
f = 21 kHz
−
1
10
mV
(RMS value)
Ri
input resistance
70
110
150
kΩ
Multi-path detector (pins LVIN, MPTH and MRO)
Zi(LVIN)
Vi(LVIN)
fc(MPD)
input impedance at pin LVIN
input voltage at pin LVIN
24
1.0
20
30
2.5
21
36
4.0
22
kΩ
V
centre frequency of the
multi-path detector band-pass
filter
kHz
BMPD
bandwidth of the multi-path
detector band-pass filter
3.6
4.0
4.4
kHz
αsb
stop band attenuation
f = 11 kHz
16
12
−
−
−
−
−
dB
dB
ms
f = 31 kHz
−
tatt(MRO)
attack time of the rectifier
C6 = 100 nF; R4 = 470 kΩ
6.4
1997 Sep 01
17
NXP [ NXP ]
