August 1990 2
Philips Semiconductors Product specification
Integrated FM tuner for radio receivers TDA1574T
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
PACKAGE OUTLINE
20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 September 9.
PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT
Supply voltage range
(pin 17) VP7−14 V
Mixer input bias voltage
(pins 1 and 2) V1,2-4 −1−V
Noise factor NF −9−dB
Oscillator output voltage
(pin 6) V6-4 −2−V
Output admittance at pin 6 f = 108.7 MHz Y22 −1.5 + j2 ms
Oscillator output buffer
DC output voltage (pin 9) V9-4 −6−V
Total harmonic distortion THD −−15 −dB
Linear IF amplifier output
voltage (pin 12) V12-4 −4.5 −V
Noise factor RS= 300 ΩNF −6.5 −dB
Keyed AGC output voltage
range (pin 20) V20-4 0.5 −VP−0.3 V