U4224B-CFL datasheet(6/17 Pages) TEMIC

Part #	U4224B-CFL

Description	Time Code Receiver

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Manufacturer	TEMIC [TEMIC Semiconductors]

Direct Link	http://www.temic.de

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6 / 17 page

U4224B

TELEFUNKEN Semiconductors

Rev. A3, 02-Apr-96

6 (17)

Electrical Characteristics

VCC = 3 V, reference point pin 3, input signal frequency 80 kHz, Tamb = 25

_C, unless otherwise specified

Parameters

Test Conditions / Pin

Symbol

Min.

Typ.

Max.

Unit

Supply voltage range

pin 1

VCC

1.2

5.25

V

Supply current

pin 1

without reception signal

with reception signal = 200

mV

OFF-mode

ICC

15

30

25

0.1

mA

Set-up time after VCC ON

VCC = 1.5 V

t

2

s

AGC AMPLIFIER INPUT; IN

pin 2

Reception frequency range

fin

40

80

kHz

Minimum input voltage

Rres = 100 k

W, Qres > 30

Vin

1

1.5

mV

Maximum input voltage

Vin

40

80

mV

Input capacitance to ground

Cin

1.5

pF

TIMING CODE OUTPUT; TCO

pin 16

Output voltage

HIGH

LOW

RLOAD = 870 k

W to GND

RLOAD = 650 k

W to VCC

VOH

VOL

VCC- 0.4

0.4

V

Output current

HIGH

LOW

VTCO = VCC/2

ISOURCE

ISINK

3

4

10

12

mA

Decoding characteristics

DCF77 based on the values of

the application circuit

page KEIN MERKER:

TCO pulse width 100 ms

TCO pulse width 200 ms

Delay compared with the

transient of the RF signal:

drop down (start transition)

rise for 100 ms pulse

(end transition)

rise for 200 ms pulse

(end transition)

t100

t200

ts

te1

te2

60

160

30

25

10

90

190

130

230

60

55

30

ms

Decoding characteristics

WWVB 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:

drop down (start transition)

rise (end transition)

t200

t500

t800

ts

te

140

440

740

45

20

200

500

800

80

45

ms

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