SAA6579 Просмотр технического описания (PDF) - Philips Electronics
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SAA6579 Datasheet PDF : 16 Pages
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Philips Semiconductors
Radio Data System (RDS) demodulator
Product specification
SAA6579
CHARACTERISTICS
VDDA = VDDD = 5 V; Tamb = 25 °C and measurements taken in Fig.1; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
VDDA
VDDD
Itot
Vref
analog supply voltage (pin 5)
digital supply voltage (pin 12)
total supply current
reference voltage (pin 3)
I5 + I12
VDDA = 5 V
MPX input (signal before the capacitor on pin 4)
3.6 5.0
3.6 5.0
−
6
−
2.5
Vi MPX(rms) RDS amplitude (RMS value)
Vi MPX(p-p) maximum input signal capability
(peak-to-peak value)
R4-6
input resistance
G8-4
signal gain
57 kHz band-pass filter
∆f = ±1.2 kHz RDS;
1
−
∆f = ±3.5 kHz ARI; see Fig.5
f = 57 ±2 kHz
200 −
f < 50 kHz
1.4 −
f < 15 kHz
2.8 −
f > 70 kHz
3.5 −
f = 0 to 100 kHz
40
−
f = 57 kHz
17
20
fc
centre frequency
B
−3 dB bandwidth
G
stop band gain
Ro(8)
output resistance (pin 8)
Tamb = −40 to +85 °C
∆f = ±7 kHz
f < 45 kHz
f < 20 kHz
f > 70 kHz
f = 57 kHz
56.5 57.0
2.5 3.0
31
−
40
−
50
−
40
−
−
26
Comparator input (pin 7)
Vi(rms)
Ri
minimum input level (RMS value)
input resistance
Oscillator input (pin 13)
f = 57 kHz
−
1
70
110
VIH
HIGH level input voltage
VIL
LOW level input voltage
II
input current
VDDD = 5.0 V
VDDD = 5.0 V
VDDD = 5.5 V
4.0 −
−
−
−
−
MAX. UNIT
5.5 V
5.5 V
−
mA
−
V
−
mV
−
mV
−
V
−
V
−
V
−
kΩ
23
dB
57.5 kHz
3.5 kHz
−
dB
−
dB
−
dB
−
dB
−
Ω
10
mV
150 kΩ
−
V
1.0 V
±1
µA
1997 Feb 24
6
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