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)
V
P
7
−
14
V
Mixer input bias voltage
(pins 1 and 2)
V
1,2-4
−
1
−
V
Noise factor
NF
−
9
−
dB
Oscillator output voltage
(pin 6)
V
6-4
−
2
−
V
Output admittance at pin 6
f = 108.7 MHz
Y22
−
1.5 + j2
ms
Oscillator output buffer
DC output voltage (pin 9)
V
9-4
−
6
−
V
Total harmonic distortion
THD
−
−
15
−
dB
Linear IF amplifier output
voltage (pin 12)
V
12-4
−
4.5
−
V
Noise factor
R
S
= 300
Ω
NF
−
6.5
−
dB
Keyed AGC output voltage
range (pin 20)
V
20-4
0.5
−
V
P
−
0.3
V