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GENERAL DESCRIPTION

The AD7665 is a 16-bit, 570 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.

FEATURES

Throughput

570 kSPS (Warp Mode)

500 kSPS (Normal Mode)

INL: ±2.5 LSB Max (±0.0038 of Full Scale)

16-Bit Resolution with No Missing Codes

S/(N+D): 90 dB Typ @ 180 kHz

THD: –100 dB Typ @ 180 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

64 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 Upgrade of the AD7664/AD7663

APPLICATIONS

Data Acquisition

Communication

Instrumentation

Spectrum Analysis

Medical Instruments

Process Control