U4223B Datasheet, PDF (10/18 Pages) ATMEL Corporation – Time-Code Receiver with A/D Converter

U4223B
Application Circuit for DCF 77.5 kHz
+V_CC
Control lines
Ferrite
Antenna
f_res = 77.5 kHz
77.5 kHz ²⁾
1
20
D0
10 nF
2
19
D1
10 nF
3
18
D2
10 nF
D3
4
17
10 nF _{PON 3)}
5
16
U4223B
6
15 ^{77.5 kHz}
Microcomputer
7
C₁
6.8 nF
8
C₂
33 nF
9
14
SL ¹⁾
13
12
10
11
C₃
10 nF
Figure 20.
Application Circuit for WWVB 60 kHz
+V_CC
CLK ⁴⁾
Display
Keyboard
1) _{If SL is not used, SL is connected to VCC}
2) _{77.5-kHz crystal can be replaced by 10 pF}
3) _{If IC is activated, PON is connected to GND}
4) _{Voltage swing 100 mVpp at Pin 12}
Control lines
Ferrite
1
Antenna
2
f_res = 60 kHz
3
RSB
4
10 kW
5
60 kHz ²⁾
6
U4223B
20
D0
10 nF
19
D1
10 nF
18
D2
10 nF
D3
17
10 nF _{PON 3)}
16
60 kHz
15
Microcomputer
7
C₁
15 nF
8
C₂
47 nF
9
10
C₃
10 nF
14
SL ¹⁾
13
12
11
Figure 21.
CLK ⁴⁾
Display
Keyboard
1) _{If SL is not used, SL is connected to VCC}
2) _{60-kHz crystal can be replaced by 10 pF}
3) _{If IC is activated, PON is connected to GND}
4) _{Voltage swing 100 mVpp at Pin 12}
10 (18)
Rev. A7, 06-Mar-01