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TP5510 Full Duplex Analog Front End (AFE) for Consumer Applications

February 1997

TP5510

Full Duplex Analog Front End (AFE)

for Consumer Applications

General Description

The TP5510 consists of a

m-law

monolithic AFE device uti-

lizing the A D and D A conversion architecture shown in

Figure 1

and a serial data interface The device is fabricat-

ed using National鈥檚 advanced double-poly CMOS process

(microCMOS)

The A D portion of the device consists of an input gain

adjust amplifier an active RC pre-filter which eliminates very

high frequency noise and a switched-capacitor band-pass

filter that rejects signals below 200 Hz and above 3400 Hz

Also included are auto-zero circuitry and a compressing

A D which samples the filtered signal and converts it to the

m-law

digital format The decode portion of the device con-

sists of an expanding D A which reconstructs the analog

signal from the compressed

m-law

code a low-pass filter

which corrects for the sin x x response of the D A output

and rejects signals above 3400 Hz followed by a single-

ended power amplifier capable of driving low impedance

loads The device requires a 1 536 MHz 1 544 MHz or

2 048 MHz master clock bit clocks which may vary from 64

kHz to 2 048 MHz and 8 kHz frame sync pulses

Features

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

Complete A D and D A with filter system including

Serial Data Interface

Encode high-pass and low-pass filter

Decode low-pass filter with sin x x correction

Active RC noise filters

m-law

compatible A D and D A

Internal precision voltage reference

Internal auto-zero circuitry

m-law

TP5510

g

5V operation

Low operating power typically 60 mW

Power-down standby mode typically 3 mW

Automatic power-down

TTL or CMOS compatible digital interfaces

Maximizes PC card circuit density

Plastic DIP and SOIC packages

8-bit digital I O

13-bit dynamic range

Use with DSP processor

Applications Tapeless Answering Machines Cordless

Phones Cellular Radio

Connection Diagram

Dual-In-Line Package

TL H 11186 鈥?1

Top View

Order Number TP5510WM

See NS Package Number M16B

Order Number TP5510N

See NS Package Number N16A

TRI-STATE is a registered trademark of National Semiconductor Corporation

C

1996 National Semiconductor Corporation

TL H 11186

RRD-B30M27 Printed in U S A

http

www national com

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• TP5510
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC
  TP5510
• TP5510
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC [Natio...
  TP5510
• TP5510N
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC
  TP5510N
• TP5510N
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC [Natio...
  TP5510N
• TP5510WM
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC
  TP5510WM
• TP5510WM
  英文版
  Full Duplex Analog Front End for Consumer Applications
  NSC [Natio...
  TP5510WM

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