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Philips Semiconductors
Integrated FM tuner for radio receivers
GENERAL DESCRIPTION
The TDA1574T is an integrated FM tuner circuit designed for use in the RF/IF section of car radios and home receivers.
The circuit contains a mixer and an oscillator and a linear IF amplifier for signal processing. The circuit also incorporates
the following features.
Features
Keyed Automatic Gain Control (AGC)
Regulated reference voltage
Buffered oscillator output
Electronic standby switch
Internal buffered mixer driving.
QUICK REFERENCE DATA
PARAMETER
Supply voltage range
(pin 17)
Mixer input bias voltage
(pins 1 and 2)
Noise factor
Oscillator output voltage
(pin 6)
Output admittance at pin 6
Oscillator output buffer
DC output voltage (pin 9)
Total harmonic distortion
Linear IF amplifier output
voltage (pin 12)
Noise factor
Keyed AGC output voltage
range (pin 20)
PACKAGE OUTLINE
20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 September 9.
August 1990
CONDITIONS
SYMBOL
V
P
V
1,2-4
NF
V
6-4
f = 108.7 MHz
Y22
V
9-4
THD
V
12-4
R
= 300
NF
S
V
20-4
2
Product specification
MIN.
TYP.
7
14
1
9
2
1.5 + j2
6
15
4.5
6.5
0.5
V
TDA1574T
MAX.
UNIT
V
V
dB
V
ms
V
dB
V
dB
0.3
V
P
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