TDA1575 View Datasheet(PDF) - Philips Electronics
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TDA1575 Datasheet PDF : 16 Pages
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Philips Semiconductors
FM front end circuit for
CENELEC EN 55020 applications
Preliminary specification
TDA1575T
CHARACTERISTICS
VP = 8.5 V and Tamb = +25°C, measurements taken in Fig.1 with f0 = 98 MHz (EMF1) unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VP
IP
VREF
Mixer
supply voltage (pin 13)
supply current
reference voltage (pin 5)
without mixer
I5 ≤ 3 mA
7
8.5
10
V
16
23
30
mA
3.9
4.2
4.4
V
I14+15
V1,2
Z1,2
V14,15
C14,15
GP
EMF1IP3
NF
mixer supply current (pins 14 and 15)
DC voltage input (pins 1 and 2)
input impedance
DC output voltage (pins 14 and 15)
output capacitance
conversion power gain
3rd order intercept point
noise figure
total noise figure
−
−
−
4
−
note 1
−
−
−
including
−
transforming network
4
−
1
−
14
−
−
10
13
−
14
−
115
−
9
−
11
−
mA
V
Ω
V
pF
dB
dBµV
dB
dB
Oscillator
V7,8
DC input voltage (pins 7 and 8)
V6
DC output voltage (pin 6)
∆f
residual FM at pin 6
−
1.3
−
V
−
2.0
−
V
f = 300 to 15000 Hz; −
2.2
−
Hz
de-emphasis 50 µs
Oscillator buffered output (pin 9)
VO
V9
R9
THD
fS
output signal (RMS value)
DC output voltage
DC output resistor
total harmonic distortion
spurious frequencies
Automatic gain control (AGC)
RL= 500 Ω; CL= 2 pF 75
−
−
mV
−
6
−
V
−
950
−
Ω
−
−15
−
dBC
EMF1 = 2 V;
−
RS = 50 Ω;
fOSC = 108.7 MHz
−37
−
dBC
R3
C3
V16
I16
EMF2
input resistance (pin 3)
input capacitance
AGC output swing (DC)
output current at I3 = 0
output current at U3 = 2 V
threshold (RMS value)
−
4
−
kΩ
−
3
−
pF
Figs 3 and 4
V16 = 1⁄2VP
0.5
−
VP − 0.3 V
−25
−50
−150 µA
V16 = 7 to 10 V
2
−
5
mA
I16 = 0; V16 = 1⁄2VP; −
17
−
mV
Figs 4 and 5
April 1993
5
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