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August 1990 7
Philips Semiconductors Product specification
Integrated FM tuner for radio receivers TDA1574T
Output voltage (pin 12) V
12
− 4.5 − V
AC characteristics
f
i
= 10.7 MHz
Input impedance R
16-15
240 300 360 Ω
C
16-15
− 13 − pF
Output impedance R
12
240 300 360 Ω
C
12
− 3 − pF
Voltage gain note 2 G
v
27 30 − dB
Voltage gain with
variation of temperature T
amb
= −40
to + 85 °C ∆G
T
− 0 − dB
1 dB compression point
(RMS value)
at V
P
= 8.5 V V
12(rms)
− 750 − mV
at V
P
= 7.5 V V
12(rms)
− 550 − mV
Signal-to-noise ratio R
S
= 300 Ω S/N − 6.5 − dB
Keyed AGC
DC characteristics
Output voltage range
(pin 20) ∆V
20
0.5 − V
P
−0.3 V
AGC output current
at I
3
= 0 or
V
14
= 450 mV;
V
20
= V
P
/2 −I
20
25 50 100 µA
at V
3
= 2 V and
V
14
= 1 V; V
20
= V
15
I
20
2 − 5mA
Narrowband threshold
at V
3
= 2 V; V
14
= 550 mV V
20
−−1V
at V
3
= 2 V; V
14
= 450 mV V
20
V
P
−0.3 −−V
AC characteristics
f
i
= 98 MHz
Input impedance R
3
− 4 − kΩ
C
3
− 3 − pF
PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT