Philips Semiconductors
IF amplifier/demodulator for FM radio
receivers
Product specification
TDA1599
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
V8
voltage on capacitor
I7 = 0;
−
2.2
−
V
Vi ≤ 5 µV RMS on
input pin 20
Level detector (I2 = 0)
V6
output voltage
Reference voltage source (pin 5)
V20 ≤ 5 µV RMS
V20 = 1 mV RMS
0.1
−
3.0
−
1.1
V
4.2
V
VREF
reference output voltage
Operation with AM-IF
I5 = −1 mA
3.3
3.7
4.1
V
Level and stop information (on pins 6,13, 14, 15 and 16) is provided for the modes FM-MUTE-ON and
FM-MUTE-OFF. This information is also available in the FM-OFF mode when an AM-IF signal is input (for example
455 kHz). This can also provide a valid detuning information when a suitable AM-IF resonance circuit is provided for
demodulator (Fig.18).
May 1994
Fig.4 Test circuit (TDA1599 pinning in parenthesis).
10