GENERAL DESCRIPTION

The AD7660 is a 16-bit, 100 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. The part contains an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

The AD7660 is hardware factory-calibrated and is comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.

It is fabricated using Analog Devices’ high performance, 0.6 micron CMOS process with correspondingly low cost and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from –40∞C to +85∞C.

FEATURES

Throughput: 100 kSPS

INL: ±3 LSB Max (±0.0046 of Full-Scale)

16-Bit Resolution with No Missing Codes

S/(N+D): 87 dB Min @ 10 kHz, 90 dB Typ @ 45 kHz

THD: –96 dB Max @ 10 kHz

Analog Input Voltage Range: 0 V to 2.5 V

Both AC and DC Specifications

No Pipeline Delay

Parallel and Serial 5 V/3 V Interface

SPI?/QSPI?/MICROWIRE?/DSP Compatible

Single 5 V Supply Operation

21 mW Typical Power Dissipation, 21 μW @ 100 SPS

Power-Down Mode: 7 μW Max

Package: 48-Lead Quad Flatpack (LQFP)

48-Lead Chip Scale Package (LFCSP)

Pin-to-Pin Compatible with the AD7664

APPLICATIONS

Data Acquisition

Battery-Powered Systems

PCMCIA

Instrumentation

Automatic Test Equipment

Scanners

Medical Instruments

Process Control