AK2125 Datasheet, PDF (3/6 Pages) List of Unclassifed Manufacturers – Receiver/ Demodulator for time code signals transmitted by the transmitter DCF77( Germany) ,MSF(UK), or WWVB(USA)

Pinning
SOP 14 - package
Pin
Symbol
01
A2
02
A1
03
M
04
E1
05
CK
06
V_CC
07
A
08
CR
09
PON
10
CD
11
AP2
12
REF
13
E3
14
AP1
Pin designation
RF output 2
RF output 1
Ground
Antenna input
Compensation capacity
Supply voltage
Output
Charging capacitor (for control amplifier)
Stand by switch
Demodulation capacity
Operating point regulator 2
Reference voltage
Booster amplifier input
Operating point regulator 1
Block Diagram and Application Circiut
47 n
14 AP1
4 E1
A
47 n
12 REF
77.5 kHz
2
A1
330 k
1p
1 13
A2 E3
150 n
11
AP2
22 n
10
CD
680
100 µ
8
CR
a
AK 2125
GND
3
V2
-
V3
D
CONTROL AMPLIFIER
I
R1
I
R2
100 k
REFERENCE
CURRENT SOURCE
COMPARATOR
VR
100 k
A7
A
PON
9
OFF
ON
VCC
CK
5
100 p
V
CC
6V
CC
10 µ
2
09/00
AK2125