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U4221B Schematic ( PDF Datasheet ) - TEMIC Semiconductors

Teilenummer U4221B
Beschreibung Radio Controlled Clock Receiver
Hersteller TEMIC Semiconductors
Logo TEMIC Semiconductors Logo 




Gesamt 12 Seiten
U4221B Datasheet, Funktion
www.DataSheet.co.kr
Radio Controlled Clock Receiver
U4221B
Description
The U4221B is a bipolar integrated straight through receiver circuit in the frequency range of 60 to 80 kHz. The device
is designed for radio controlled clock application.
Features
D Low power consumption
D Very high sensitivity
D High selectivity by quartz resonator
D Stop-function available
D Only a few external components necessary
D Digitized serial output signal
Block Diagram
PON
14
TCO
13
VCCA
16
GND
15
Power supply
IN2
1
Amplifier 1
IN1
2
FSI
12
Driver
NC VCCD
10 9
Comparator
FSS
11
AGC
Amplifier 2
Demodulator
CAGC
4
3
GND (analog)
86
OUTA1 INA2
Figure 1.
75
GND (digital) CDEM
93 7506 e
TELEFUNKEN Semiconductors
Rev. A1, 15-May-96
Preliminary Information
1 (12)
Datasheet pdf - http://www.DataSheet4U.net/






U4221B Datasheet, Funktion
www.DataSheet.co.kr
U4221B
Electrical Characteristics
Parameters
Test Conditions / Pins
FIELD STRENGTH INDICATION; FSI Pin 12
Output voltage
HIGH
LOW
Output current
HIGH
LOW
RLOAD = 13 MW to GND
RLOAD = 2.6 MW to VCCD
VTCO = VCCD/2
VTCO = VCCD/2
FIELD STRENGTH SELECT; FSS
Pin 11
Input voltage
HIGH
LOW
Generator output resistance
v 200 kW
Symbol Min.
VCC–0.4
0.2
1.0
VCC–0.4
Typ.
Max.
0.4
0.4
4.0
0.4
Unit
V
mA
mA
V
V
Test Circuit for DCF
Measurement
point
77,5 kHz
Generator
50
(with variable
output level)
50
100 n 50 k
100 W
220 n
Modulation depth
adjustment by
potentiometer
(carrier reduced to 25%)
47 n
Electronic switch
(Time Code)
77.5 kHz
1
2
3
4
U 4221 B
5
6
7
8
16
15
14
13
12
11
10
9
T T = 100 ms (binary “0”)
1 s or 200 ms (binary “1”)
+VCC
It must be noted:
Input is shortened by 50 W, that
means, the antenna noise is not taken
into consideration.
PON
TCO
Measuring device:
w VCCD–0.8
V
wOscilloscope with high impedance
probe ( 20 MW )
Receiver input signal calibration:
Example: 2 m Veff input signal 2  2  2  103 = 5.65 mVpp at measurement point
93 7719 e
6 (12)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 15-May-96
Datasheet pdf - http://www.DataSheet4U.net/

6 Page









U4221B pdf, datenblatt
www.DataSheet.co.kr
U4221B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances ( ODSs).
The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency ( EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify 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
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423
12 (12)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 15-May-96
Datasheet pdf - http://www.DataSheet4U.net/

12 Page





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