SAA6581T Просмотр технического описания (PDF) - NXP Semiconductors.
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SAA6581T Datasheet PDF : 15 Pages
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Philips Semiconductors
RDS/RBDS demodulator
Product specification
SAA6581
CHARACTERISTICS: ANALOG PART
VDDA = VDDD = 5 V; Tamb = 25 °C; measurements taken in Fig.1; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
VDDA
analog supply voltage
VDDA − VDDD difference between analog and
digital supply voltages
IDD(tot)
Vref
Zo(Vref)
total supply current
reference voltage
output impedance at pin Vref
VDDA = 5 V
MPX input (signal before the capacitor on pin MPX)
Vi(MPX)(rms)
RDS amplitude (RMS value)
∆f = ±1.2 kHz RDS-signal;
∆f = ±3.2 kHz ARI-signal
Vi(max)(p-p)
maximum input signal capability f = 57 ±2 kHz
(peak-to-peak value)
f < 50 kHz
f < 15 kHz
f > 70 kHz
Ri(MPX)
input resistance
f = 0 to 100 kHz
57 kHz bandpass filter
4.0 5.0
−
0
−
6.0
2.25 2.5
−
25
1
−
200 −
1.4
−
2.8
−
3.5
−
40
−
5.5 V
0.5 V
−
mA
2.75 V
−
kΩ
−
mV
−
mV
−
V
−
V
−
V
−
kΩ
fc
B−3dB
GSCOUT-MPX
αsb
centre frequency
−3 dB bandwidth
signal gain
stop band attenuation
Ro(SCOUT)
output resistance at pin SCOUT
Comparator input (pin CIN)
Tamb = −40 to +85 °C
f = 57 kHz
∆f = ±7 kHz
f < 45 kHz
f < 20 kHz
f > 70 kHz
f = 57 kHz
56.5 57.0 57.5 kHz
2.5 3.0 3.5 kHz
17
20
23
dB
31
−
−
dB
40
−
−
dB
50
−
−
dB
40
−
−
dB
−
30
60
Ω
Vi(min)(rms)
Ri
minimum input level
(RMS value)
input resistance
f = 57 kHz
−
1
10
mV
70
110 150 kΩ
2003 Oct 10
8
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