U4275B Datasheet, PDF (10/12 Pages) TEMIC Semiconductors – FM-Receiving Condition Analyser and Multipath Noise Cancellation

U4275B
TELEFUNKEN Semiconductors
Parameters
Test conditions / Pins
Symbol Min.
Typ.
Max.
Unit
Interrupt output INT
Output voltage
low
high
R R_L =
Pin 9
V_INT
0
4.75
0.3
V
5.25
V
Reference voltage VREF
Output voltage
Pin 8
VREF
V_S/2
V
Analog multiplex output
Output voltage
W R_L = 10 k
Pin 11
V_ANA
0.200
5.2
V
Oscillator
Input voltage
Mute
Pin 14
V_OSC
50
mV_RMS
Input voltage
low
high
Pin 10
V_MUTE
0
3
1
V
V_S
Application circuit
560 k
560 k
150 nF
560 k
150 nF
456 kHz
14
Oscillator
Filter
20
19 17
Common
channel
detector
Fieldstrength
1
3
47 kW
2
100 nF
Buffer
Multipath
detector
MNC
control
150 nF
94 8645
Interference
interrupt
Reset
9
Control
signal
12
13
Address ¹⁵
logic
Analogue
multiplex
Multipath
Noise
Cancellation
(Gain 1.5)
11
Exception
quality
7
Bandgap
Supply
voltage
FM – tuner
MPX
Mute
control
10
560 k
1 mF
18
4 56
150 nF
8 ¹⁶
100 nF
MPX – Decoder
&
audio
MPX
10
Preliminary Information
Rev. A1: 14.03.1995