saa6581 NXP Semiconductors, saa6581 Datasheet - Page 8

• Manufacturer Part Number: saa6581
• Description: Rds/rbds Demodulator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
CHARACTERISTICS: ANALOG PART
V
2003 Oct 10
Supply
V
I
V
Z
MPX input (signal before the capacitor on pin MPX)
V
V
R
57 kHz bandpass filter
f
B
G
R
Comparator input (pin CIN)
V
R
DD(tot)
c
DDA
V
o(Vref)
DDA
ref
i(MPX)(rms)
i(max)(p-p)
sb
i(min)(rms)
i(MPX)
o(SCOUT)
i
RDS/RBDS demodulator
SCOUT-MPX
3dB
DDA
SYMBOL
= V
DDD
V
DDD
= 5 V; T
analog supply voltage
digital supply voltages
total supply current
reference voltage
output impedance at pin V
RDS amplitude (RMS value)
maximum input signal capability
(peak-to-peak value)
input resistance
centre frequency
signal gain
stop band attenuation
output resistance at pin SCOUT
minimum input level
(RMS value)
input resistance
difference between analog and
3 dB bandwidth
amb
= 25 C; measurements taken in Fig.1; unless otherwise specified.
PARAMETER
ref
V
f = 57 2 kHz
f < 50 kHz
f < 15 kHz
f > 70 kHz
f = 0 to 100 kHz
T
f = 57 kHz
f < 45 kHz
f < 20 kHz
f > 70 kHz
f = 57 kHz
f = 57 kHz
f = 1.2 kHz RDS-signal;
f = 3.2 kHz ARI-signal
amb
f = 7 kHz
DDA
= 40 to +85 C
= 5 V
8
CONDITIONS
4.0
2.25
1
200
1.4
2.8
3.5
40
56.5
2.5
17
31
40
50
40
70
MIN.
5.0
0
6.0
2.5
25
57.0
3.0
20
30
1
110
TYP.
Product specification
SAA6581
5.5
0.5
2.75
57.5
3.5
23
60
10
150
MAX.
V
V
mA
V
k
mV
mV
V
V
V
k
kHz
kHz
dB
dB
dB
dB
dB
mV
k
UNIT