3V Dual 8-Bit, 20/40/60MSPS A/D Converter with Internal Voltage Reference

The ISL5640 is a monolithic, dual 8-bit analog-to-digital converter fabricated in an advanced CMOS process. It is designed for high speed applications where integration, bandwidth and accuracy are essential. The ISL5640 features a 9-stage pipeline architecture. The fully pipelined architecture and an innovative input stage enable the ISL5640 to accept a variety of input configurations, singleended or fully differential. Only one external clock is necessary to drive both converters and an internal band-gap voltage reference is provided. This allows the system designer to realize an increased level of system integration resulting in decreased cost and power dissipation.

Features

• Sampling Rate . . . . . . . . . . . . . . . . . . . . . . . . . . .40MSPS

• 7.4 Bits at fIN = 1MHz

• Low Power at 40MSPS. . . . . . . . . . . . . . . . . . . . . 100mW

• Power Down Mode . . . . . . . . . . . . . . . . . . . . . . . . . <1mW

• Wide Full Power Input Bandwidth. . . . . . . . . . . . . 250MHz

• SFDR at fIN = 1MHz. . . . . . . . . . . . . . . . . . . . . . . . . .55dB

• Excellent Channel-to-Channel Isolation . . . . . . . . . >75dB

• On-Chip Sample and Hold Amplifiers

• Internal Bandgap Voltage Reference . . . . . . . . . . . . 1.25V

• Single Supply Voltage Operation . . . . . . . . . . . . . . . +3.0V

• Offset Binary or Two’s Complement Output Format

• Dual 8-Bit A/D Converters on a Monolithic Chip

• Pin Compatible Upgrade to AD9288

Applications

• Wireless Local Loop

• PSK and QAM I&Q Demodulators

• Medical Imaging

• High Speed Data Acquisition