500 SPS CMOS 16-Bit PulSAR ADC with INL of 1 LSB Max

The AD7676 is a 16-bit, 500 kSPS, charge redistribution SAR, fully differential analog-to-digital converter (ADC) that operates from a single 5 V power supply. The part contains a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

The AD7676 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 or a tiny 48-lead LFCSP with operation specified from –40°C to +85°C.

APPLICATIONS

* CT Scanners

* Data Acquisition

* Instrumentation

* Spectrum Analysis

* Medical Instruments

* Battery-Powered Systems

* Process Control

PRODUCT HIGHLIGHTS

* Excellent INL

The AD7676 has a maximum integral nonlinearity of 1.0 LSB with no missing 16-bit code.

* Superior AC Performances

The AD7676 has a minimum dynamic of 92 dB, 94 dB typical.

* Fast Throughput

The AD7676 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.

* Single-Supply Operation

The AD7676 operates from a single 5 V supply and typically dissipates only 67 mW. It consumes 7 µW maximum when in power-down.

* Serial or Parallel Interface

Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with either 3 V or 5 V logic.

* Throughput: 500 kSPS

* INL: ±1 LSB Max (±0.0015% of Full Scale)

* 16-Bit Resolution with No Missing Codes

* S/(N+D): 94 dB Typ @ 45 kHz