GENERAL DESCRIPTION

The AD7663 is a 16-bit, 250 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains a high speed 16-bit sampling ADC, a resistor input scaler that allows various input ranges, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

The AD7663 is hardware factory-calibrated and is comprehensively tested to ensure such ac parameters 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 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: 250 kSPS

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

16-Bit Resolution with No Missing Codes

S/(N+D): 90 dB Typ @ 100 kHz

THD: –100 dB Typ @ 100 kHz

Analog Input Voltage Ranges

Bipolar: ±10 V, ±5 V, ±2.5 V

Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V

Both AC and DC Specifications

No Pipeline Delay

Parallel (8/16 Bits) and Serial 5 V/3 V Interface

SPI?/QSPI?/MICROWIRE?/DSP Compatible

Single 5 V Supply Operation

Power Dissipation

35 mW Typical

15 μW @ 100 SPS

Power-Down Mode: 7 μW Max

Package: 48-Lead Quad Flatpack (LQFP)

Package: 48-Lead Chip Scale (LFCSP)

Pin-to-Pin Compatible with the AD7660/AD7664/AD7665

APPLICATIONS

Data Acquisition

Motor Control

Communication

Instrumentation

Spectrum Analysis

Medical Instruments

Process Control