AD7663| Datasheet

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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 /QSPITM/MICROWIRETM/DSP Compatible Single 5 V Supply Operation Power Dissipation 35 mW Typical 15 W @ 100 SPS Power-Down Mode: 7 W 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 GENERAL DESCRIPTION
IND(4R) INC(4R) INB(2R) INA(R) INGND

16-Bit, 250 kSPS CMOS ADC AD7663*
FUNCTIONAL BLOCK DIAGRAM
AVDD AGND REF REFGND 4R 4R 2R R SWITCHED CAP DAC PARALLEL 16 INTERFACE PD RESET CLOCK CONTROL LOGIC AND CALIBRATION CIRCUITRY DVDD DGND

AD7663
SERIAL PORT

OVDD OGND

SER/PAR BUSY D[15:0] CS RD OB/2C BYTESWAP

CNVST

PulSAR Selection

Type/kSPS Pseudo Differential True Bipolar True Differential 18-Bit Simultaneous/ Multichannel

100 250 AD7660 AD7663 AD7675 AD7678

500 570 AD7650 AD7664 AD7665 AD7676 AD7679 AD7654

800 1000

AD7671 AD7677 AD7674 AD7655

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.
*Patent pending

PRODUCT HIGHLIGHTS

1. Fast Throughput The AD7663 is a 250 kSPS charge redistribution, 16-bit SAR ADC with various bipolar and unipolar input ranges. 2. Single-Supply Operation The AD7663 operates from a single 5 V supply and dissipates only 35 mW typical. Its power dissipation decreases with the throughput to, for instance, only 15 uW at a 100 SPS throughput. It consumes 7 uW maximum when in power-down. 3. Superior INL The AD7663 has a maximum integral nonlinearity of 3 LSB with no missing 16-bit code. 4. Serial or Parallel Interface Versatile parallel (8 bits or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic.

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