P R E L I M I N A R Y

SLIC Products

17

APPLICATION CIRCUIT

REVISION SUMMARY

Revision A to Revision B

•

Minor changes were made to the data sheet style and format to conform to AMD standards.

Trademarks

Copyright

© 1998 Advanced Micro Devices, All rights reserved.

AMD, the AMD logo and combinations thereof are trademarks of Advanced Micro Devices, Inc.

DSLAC and QSLAC are trademarks of Advanced Micro Devices, Inc.

Product names used in this publication are for identification purposes only and may be trademarks of their respective companies.

Note:

The input should be 50% duty cycle CMOS-compatible input.

I. Application Circuit

+5 V

VNEG

VCC

RD

VTX

RSN

RDC

–5 V

VBAT1

DET

BGND

RYOUT1

HPB

HPA

RTRIP2

RTRIP1

BAT1

VBAT2

B2EN

BAT2

A(TIP)

B(RING)

0.1 µF

RYOUT2

C1

C2

C3

D1

D2

E1

RDCR

AGND/

DGND

RINGIN

RSGL

RSGH

1.5 µF

66 k

Ω

12 k

Ω

515 k

Ω

open

50 k

Ω

50 k

Ω

15 k

Ω

150 k

Ω

0.33 µF

See Note.

250 k

Ω

0.1 µF

RYE

open

125 k

Ω

125 k

Ω

15 k

Ω

820 nF

10 nF

Assumptions:

1. 1.25 CF

3. 100 mA Ringing Current Limit

4. 5.2 k

Ω High Battery Loop Threshold

5. 925

Ω Ringing Loop Threshold

6. 600

Ω Two-wire Impedance,

600

Ω Z

L

BATTERY

GROUND

ANALOG

GROUND

DIGITAL

GROUND

Bat1

TISP

61089

8. –67 V Vbat1, –24 V Vbat2

K1

K1

K2

K2

G

A

A

18 nF

TIP

RING