TLV5590 Datasheet, PDF (1/16 Pages) Texas Instruments – 2-BIT ANALOG-TO-DIGITAL CONVERTER FOR FLEX

D Supports FLEXt Protocol Pagers With The
TLV5591 FLEX Decoder
D 3-Pole Butterworth Low-Pass Selectable
Dual-Bandwidth Audio Filter
– BW 1 = 1 kHz ±5% (– 3 dB)
– BW 2 = 2 kHz ±5% (– 3 dB)
D Both Peak and Valley Detectors Available
D 2-Bit Analog-to-Digital Converter
D Operating Temperature Range . . . –25°C to 85°C
TLV5590
2-BIT ANALOG-TO-DIGITAL CONVERTER
FOR FLEXt PAGER CHIPSET
SLAS134B – NOVEMBER 1995 – REVISED NOVEMBER 1996
D Four Modes of Operation:
– Fast Acquisition
– Slow Acquisition
– Hold Acquisition
– Standby
D 2.7-V to 3.3-V Single Power Supply
Operation
applications
D FLEX Protocol Numeric and
Alphanumeric Pagers
D One-Way or Two-Way
description
D PACKAGE
The TLV5590 analog-to-digital converter is a
(TOP VIEW)
system level solution to interface a 4-level
baseband audio signal to a digital decoder. The
TLV5590 is a direct interface to the TLV5591BVF^†
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
DV_{DD 1}
AV_{DD 2}
SIG ₃
DC OFFSET 4
MID 5
GND 6
BW 7
14 ^CLK
13 ^TEST
12 ^TRACKINH
11 EXTS0
10 EXTS1
9 CON2
8 CON1
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
valley levels. The DAC outputs are used to set V_ref+ and V_ref– for the 2-bit analog-to-digital converter (ADC).
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
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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