U2270B-FP データシートの表示（PDF） - Temic Semiconductors

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U2270B-FP

Read / Write Base Station IC

Temic Semiconductors 

U2270B

Application 1

Application using few external components. This application is for intense magnetic coupling only.

9693

110 kW

5V

47 nF

47 mF

VBatt

VEXT VS

DVS

U2270B

CIN

1N4148

INPUT

RF

MS

CFE

OE

STANDBY

OUTPUT

HIPASS

470 kW

CHP

COIL1

1.5 nF

R

1.35 mH

1.2 nF

COIL2

DGND

GND

VDD

Micro-

controller

VSS

Figure 14.

Application 2

Basic application using diode feedback. This application permits higher communication distances than application 1.

12605

BC639

360 W

12 V

4x

1N4148

68 kW

22 mF

75 kW

4.7 nF

22 mF

22 mF

GND

100 kW

43 kW

VS VEXT DVS VBatt

VDD

1.2 nF

1.35 mH 82 W

Antenna

1N4148

CIN

470 kW

1.5 nF

CHP

RF

MS

COIL 2

CFE

U2270B

COIL 1

Standby

Input

Output

HIPASS

OE

DGND GND

Micro-

controller

I/O

VSS

Figure 15.

8 (13)

TELEFUNKEN Semiconductors

Rev. A3, 13-Dec-96

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