TLV5590

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 DVDD 1 AVDD 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...