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PT2579 Datasheet(PDF) 7 Page - Princeton Technology Corp

Part # PT2579
Description  RDS Demodulator IC
PDF  21 Pages
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Manufacturer  PTC [Princeton Technology Corp]
Direct Link  http://www.princeton.com.tw
Logo PTC - Princeton Technology Corp

PT2579 Datasheet(HTML) 7 Page - Princeton Technology Corp

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Tel: 886-2-66296288
Fax:886-2-29174598
URL:http://www.princeton.com.tw
PT2579 V1.6
- 7 -
May, 2008
RDS Demodulator IC
PT2579
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, AVDD=DVDD=5V, Ta=25℃)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Analog supply
voltage
AVDD
AVDD
3.3
5.0
5.5
V
Digital supply
voltage
DVDD
DVDD
3.3
5.0
5.5
V
Total supply current
Itot
I5 + I12
-
6
-
mA
Reference voltage
Vref
VREF, AVDD=5V
-
2.5
-
V
MPX Input (Signal before the Capacitor on Pin 4)
RDS amplitude
(RMS value)
ViMPX(rms)
f=+1.2KHz RDS
f=+3.5KHz ARI (see Note)
1
-
-
mV
f=57±2KHz
200
-
-
mV
f<50KHz
1.4
-
-
V
f<15KHz
2.8
-
-
V
Maximum input
signal capability
(peak to peak value)
ViMPX(p-p)
f>70KHz
3.5
-
-
V
Input impedance
R4-6
f=0 to 100KHz
40
-
-
KΩ
Signal gain
G8-4
f=57KHz
17
20
23
dB
57KHz Band-Pass Filter
Center frequency
fc
Ta=-40 to +85℃
56.5
57.0
57.5
KHz
-3dB bandwidth
B
-
2.5
3.0
3.5
KHz
f=±7KHz
31
-
-
dB
f<45KHz
40
-
-
dB
f<20KHz
50
-
-
dB
Stop band gain
G
f>70KHz
40
-
-
dB
Output resistance
(pin 8)
Ro (8)
f=57KHz
-
26
-
Ω
Comparator Input (Pin 7)
Minimum input level
(RMS value)
Vi(rms)
f=57KHz
-
1
10
mV
Input resistance
Ri
-
70
110
150
KΩ
Oscillator Input (Pin 13)
High level input
voltage
VIH
DVDD=5.0V
4.0
-
-
V
Low level input
Voltage
VIL
DVDD=5.0V
-
-
1.0
V
Input current
II
DVDD=5.5V
-
-
±1
µA



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