1

2

3

4

5

6

7

14

13

12

11

10

9

8

SIG

DC OFFSET

MID

GND

BW

CLK

TEST

TRACKINH

EXTS0

EXTS1

CON2

CON1

D PACKAGE

(TOP VIEW)

TLV5590

2-BIT ANALOG-TO-DIGITAL CONVERTER

FOR FLEX

t PAGER CHIPSET

SLAS134B – NOVEMBER 1995 – REVISED NOVEMBER 1996

1

POST OFFICE BOX 655303

TLV5591 FLEX Decoder

Dual-Bandwidth Audio Filter

– BW 1 = 1 kHz

±5% (– 3 dB)

– BW 2 = 2 kHz

±5% (– 3 dB)

– Fast Acquisition

– Slow Acquisition

– Hold Acquisition

– Standby

Operation

applications

Alphanumeric Pagers

description

The TLV5590 analog-to-digital converter is a

system level solution to interface a 4-level

baseband audio signal to a digital decoder. The

FLEX decoder. Designed primarily for pager

applications, the TLV5590 incorporates signal

conditioning, both peak and valley detection along

with analog-to-digital conversion. A selectable

third-order

Butterworth

filter

with

cutoff

frequencies of 1 kHz and 2 kHz is included. The

peak and valley detectors are implemented with a unique design that does not require external capacitors. Two

8-bit digital-to-analog converters (DACs) are used in a feedback loop to automatically adjust to the peak and

Modes of operation include fast track, slow track, hold, and standby. The standby mode maximizes battery life.

The TLV5590 operates on a single supply down to 2.7 V.

AVAILABLE OPTIONS

PACKAGE

TA

SMALL OUTLINE

(D)

–25

°C to 85°C

TLV5590ED

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

FLEX is a trademark of Motorola, Incorporated.

† TLV5591BVF Data Manual Literature Number – SLWS048

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

© 1996, Texas Instruments Incorporated