U4224B Datasheet, PDF (7/17 Pages) TEMIC Semiconductors – Time Code Receiver

U4224B
Parameters
Decoding characteristics
Test Conditions / Pin
JG2AS based on the values of
the application circuit
page KEIN MERKER:
TCO pulse width 200 ms
TCO pulse width 500 ms
TCO pulse width 800 ms
Delay compared with the
transient of the RF signal:
start transition (RF on)
end transition (RF off)
y ^{POWER ON/OFF CONTROL; PON pin 15}
Input voltage
Required I_IN 0.5 mA
HIGH
LOW
Input current
Set-up time after PON
V_CC = 3V
V_CC = 1.5 V
V_CC = 5 V
AGC HOLD MODE; SL
Input voltage
HIGH
LOW
y ^{pin 12}
Required I_IN 0.5 mA
Input current
Rejection of interference
signals
Vin = V_CC
ȧ ȧ Vin = GND
f_d – f_ud = 625 Hz
V_d = 3 mV, f_d = 77.5 kHz
using 2 crystal filters
using 1 crystal filter
Symbol Min.
t₂₀₀
240
t₅₀₀
420
t₈₀₀
720
t_s
10
t_e
30
V_CC - 0.2
I_IN
1.4
t
V_CC - 0.2
a_f
a_f
Typ. Max. Unit
410
ms
490
ms
790
ms
110
ms
220
ms
V
V_CC - 1.2 V
1.7
2
mA
0.7
mA
3
mA
0.5
2
s
V
V_CC - 1.2 V
0.1
mA
2.5
mA
43
dB
22
dB
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
7 (17)