U4224B TEMIC Semiconductors, U4224B Datasheet

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U4224B

Manufacturer Part Number
U4224B
Description
Time Code Receiver
Manufacturer
TEMIC Semiconductors
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
U4224B
Manufacturer:
TEMIC
Quantity:
7
Part Number:
U4224B-MFLG3
Manufacturer:
YAGEO
Quantity:
860 000
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
Time Code Receiver
Description
The U4224B is a bipolar integrated straight through receiver circuit in the frequency range of 40 to 80 kHz.
The device is designed for radio controlled clock applications.
Features
D
D
D
D
Block Diagram
Very low power consumption
Very high sensitivity
High selectivity by using two crystal filters
Power down mode available
GND
V
CC
IN
1
3
2
SB
4
Power Supply
Q1A
PON
Amplifier
5
AGC
15
Q1B Q2A
6
13
14
Q2B
D
D
D
TCO
Only a few external components necessary
Digitalized serial output signal
AGC hold mode
16
REC
Rectifier &
Integrator
Decoder
7
INT
93 7727 e
8
12
11
10
9
FLB
FLA
DEC
SL
U4224B
1 (17)

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U4224B Summary of contents

Page 1

... Time Code Receiver Description The U4224B is a bipolar integrated straight through receiver circuit in the frequency range kHz. The device is designed for radio controlled clock applications. Features D Very low power consumption D Very high sensitivity D High selectivity by using two crystal filters ...

Page 2

... It is recommended for 60 kHz WWVB and R 40 kHz 8379 16 TCO 15 PON 14 Q2B 13 Q2A U4224B FLB 10 FLA 9 DEC 93 7729 e W for DCF 77.5 kHz open for JG2AS SB 94 8381 SB GND TELEFUNKEN Semiconductors ...

Page 3

... FLA, FLB Lowpass filter: A capacitor C3 connected between FLA and FLB supresses higher frequencies at the trigger circuit of the decoder. FLB GND U4224B = V ) sets normal func disconnects the rectifier and holds the control voltage ...

Page 4

... U4224B Q2A, Q2B According to Q1A, Q1B a crystal is connected between the pins Q2A and Q2B used with the serial resonance frequency of the time code transmitter (e.g. 60 kHz WWVB, 77.5 kHz DCF or 40 kHz JG2AS). The equi- valent parallel capacitor of the filter crystal is internally compensated ...

Page 5

... MIL Standard 883 D ), excepted pins and 14 Thermal Resistance Parameters Thermal resistance TELEFUNKEN Semiconductors Rev. A3, 02-Apr-96 U4224B problem if the bandwidth of the antenna circuit is low compared to the temperature variation of the resonance frequency. Of course, Q can also be reduced by a parallel resistor. Temperature compensation of the resonance frequency is a must if the clock is used at different temperatures ...

Page 6

... U4224B Electrical Characteristics reference point pin 3, input signal frequency 80 kHz Parameters Test Conditions / Pin Supply voltage range Supply current without reception signal with reception signal = 200 OFF-mode Set-up time after 1 AGC AMPLIFIER INPUT; IN Reception frequency range ...

Page 7

... Rev. A3, 02-Apr-96 Symbol t 200 t 500 t 800 pin 0 0 625 77.5 kHz U4224B Min. Typ. Max. Unit 240 410 ms 420 490 ms 720 790 ms 10 110 ms 30 220 1 ...

Page 8

... U4224B Test Circuit (for Fundamental Function) Vd 1.657V 300k Stco Vtco U4224B 100k Ivcc V STABILISATION CC Iin 1M IN GND Vin Vsb 8 (17) Test point: DVM with high and low input Ipon current lxx by conversion into a voltage. Spon 1M 82p TCO Q2A PON ...

Page 9

... TCO 15 MICROCOMPUTER 3) PON kHz DISPLAY not used connected kHz crystal can be replaced activated, PON is connected to GND 47 nF U4224B KEYBOARD CC 94 8279 e KEYBOARD CC 94 8278 e 9 (17) ...

Page 10

... U4224B Application Circuit for JG2AS 40 kHz + V CC Ferrite Antenna kHz res U4224B kHz 680 220 nF 10 (17) CONTROL LINES 16 TCO 15 MICROCOMPUTER 3) PON kHz DISPLAY not used connected to V ...

Page 11

... PAD Coordinates The T4224B is the die version of the U4224B. DIE size: 2. " PAD size: 100 x 100 m (contact window Thickness: 300 Symbol x-axis/ m IN1 128 IN 128 GND 354 SB 698 Q1A 1040 Q1B 1290 REC 1528 INT 1766 ...

Page 12

... U4224B Information Regarding German Transmitter Station: DCF 77, Frequency 77.5 kHz, Transmitting power coding when required Example:19. sec minutes Start Bit Modulation: The carrier amplitude is reduced the beginning of each second for 100 ms (binary zero) or 200 ms (binary one) duration, excepting the 59th second ...

Page 13

... The prescence of the fast code during the first 500 ms at the beginning of the minute in not guaranteed. The trans- mission rate is 100 bits/s and the code contains information of hour, minute, day and month. U4224B TIME FRAME ...

Page 14

... U4224B Information Regarding US Transmitter Station: WWVB Frequency 60 kHz Transmitting power 10 kW TIME FRAME 1 MINUTE hours minutes Example: UTC 18.42 h TIME FRAME seconds minutes Frame reference marker Modulation: The carrier amplitude is reduced the beginning of each second and is restored in 500 ms (binary one 200 ms (binary zero) ...

Page 15

... It consists of one minute time frame. A time frame con- tains BCD–coded information of minutes, hours and days. In addition there are 6 position identifier markers (P0 thruP5) and one frame reference markers (FRM) with reduced carrier amplitude of 800 ms duration. Package plastic plastic no no U4224B Time Frame ...

Page 16

... U4224B Dimensions in mm Package (17) 94 8961 TELEFUNKEN Semiconductors Rev. A3, 02-Apr-96 ...

Page 17

... TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone 7131 67 2831, Fax number 7131 67 2423 TELEFUNKEN Semiconductors Rev. A3, 02-Apr-96 unauthorized use. U4224B 17 (17) ...

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