U4270B TEMIC [TEMIC Semiconductors], U4270B Datasheet - Page 2

• Manufacturer Part Number: U4270B
• Description: FM IF limiter amplifier and detector
• Manufacturer: TEMIC [TEMIC Semiconductors]

U 4270 B
Pin description
2
DIP
STOP SEN
MUTE DE
18
10
STOP SIG
MUTE IN
1
2
–
3
4
5
6
7
8
9
DEMOD
RVOLT
GND
AFC
AF
SSO
20
10
11
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
STOP SEN Search tuning stop sensi-
MUTE DE Mute depth
STOP SIG Search stop signal output
MUTE IN Mute input
DEMOD
DEMOD
Symbol
RVOLT
GND
AFC
NC
AF
Ground
N.C.
AF output
tivity
AFC output
Reference voltage output
Demodulator circuit
Demodulator circuit
94 8949
Function
Preliminary Information
17
18
16
15
14
13
12
11
10
FS
MPOUT
IF
MPIN
RTC
DEMOD
BFB
V
BFB
S
STOP SEN
MUTE DE
DIP
STOP SIG
MUTE IN
DEMOD
18
11
12
13
14
15
16
17
18
–
RVOLT
GND
AFC
NC
AF
SSO
20
12
13
14
15
16
17
18
19
20
10
1
2
3
4
5
6
7
8
9
TELEFUNKEN Semiconductors
MPOUT
Symbol
MPIN
RTC
BFB
BFB
NC
V
FS
IF
S
Field strength
Multipath identification
output
Rectifier time constant
Supply voltage
Multipath identification
input
N.C.
Bias feedback
Bias feedback
IF input
94 8948
Rev. A1: 07.10.1994
Function
20 IF
19
18
17
16
15
14
13
12
11
FS
MPOUT
MPIN
RTC
DEMOD
BFB
V
BFB
NC
S