AK2125 Datasheet, PDF (5/6 Pages) List of Unclassifed Manufacturers – Receiver/ Demodulator for time code signals transmitted by the transmitter DCF77( Germany) ,MSF(UK), or WWVB(USA)

2. Parameters
Refering to the test circuit with generator signal
f = 77500 Hz ± 5 Hz
pulse modulation of RF-signal from 100% to 25 %
during modulation time t = 200 ms,
V_CC = 1.4 V ; V_PON = 0 V ; T_a = 25 °C
unless specified otherwise
min.
typ.
Supply voltage range
(+5 °C < T_a < +55 °C)
1.2
1.4
supply voltage range
1.4
(-25 °C < T_a < +85 °C)
current consumption
600
(normal operating)
current consumption ( Stand - by )
<1
Switch current I_PON ( V_PON = ground )
-15
Input voltage
3
Input impedance of the
750
RF amplifier
Input impedance of the
95
booster amplifier
Output impedance of the
0.3
RF segment ( A1 )
Output impedance of the
7.5
RF segment ( A2 )
Amplification RF segment A1
53
Range of input voltage
30
booster amplifier
Internal resistance of the
70
demodulator
Output voltage of the demodulator
200
Control time
for ∆V_i = 0.1 mV - 1 mV
0.8
for ∆V_i = 1 mV - 0.5 mV
5.0
Output pulse width
at transmitter pulse width =200 ms
180
195
for V_R = 1.4 V, V_iE = 3 µV
4
max.
2.2
2.2
1000
10
-50
100000
450
220
unit
V
V
µA
µA
µA
µV
kΩ
kΩ
kΩ
kΩ
dB
µV
kΩ
mV_pp
s
s
ms
09/00
AK2125