a 16-Bit, 250 kSPS CMOS ADC AD7663 FEATURES FUNCTIONAL BLOCK DIAGRAM Throughput: 250 kSPS AVDD AGND REF REFGND DVDD DGND INL: 3 LSB Max ( 0.0046% of Full Scale) 16-Bit Resolution with No Missing Codes 4R S/(N+D): 90 dB Typ 100 kHz IND(4R) AD7663 OVDD 4R THD: 100 dB Typ 100 kHz INC(4R) OGND 2R SERIAL Analog Input Voltage Ranges INB(2R) PORT R Bipolar: 10 V, 5 V, 2.5 V INA(R) SWITCHED SER/PAR Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V CAP DAC INGND BUSY Both AC and DC Specifications PARALLEL 16 D 15:0 No Pipeline Delay INTERFACE CLOCK Parallel (8/16 Bits) and Serial 5 V/3 V Interface PD CS SPI /QSPI/MICROWIRE/DSP Compatible RESET RD CONTROL LOGIC AND CALIBRATION CIRCUITRY Single 5 V Supply Operation OB/2C Power Dissipation BYTESWAP 35 mW Typical CNVST 15 W 100 SPS Power-Down Mode: 7 W Max Package: 48-Lead Quad Flatpack (LQFP) PulSAR Selection Package: 48-Lead Chip Scale (LFCSP) Pin-to-Pin Compatible with the AD7660/AD7664/AD7665 Type/kSPS 100250 500570 8001000 APPLICATIONS Pseudo AD7660 AD7650 Data Acquisition Differential AD7664 Motor Control True Bipolar AD7663 AD7665 AD7671 Communication Instrumentation True Differential AD7675 AD7676 AD7677 Spectrum Analysis 18-Bit AD7678 AD7679 AD7674 Medical Instruments Process Control Simultaneous/ AD7654 AD7655 Multichannel 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 PRODUCT HIGHLIGHTS supply. It contains a high speed 16-bit sampling ADC, a resistor 1. Fast Throughput input scaler that allows various input ranges, an internal conver- The AD7663 is a 250 kSPS charge redistribution, 16-bit sion clock, error correction circuits, and both serial and parallel SAR ADC with various bipolar and unipolar input ranges. system interface ports. 2. Single-Supply Operation The AD7663 operates from a single 5 V supply and dissipates The AD7663 is hardware factory-calibrated and is comprehen- only 35 mW typical. Its power dissipation decreases with sively tested to ensure such ac parameters as signal-to-noise ratio the throughput to, for instance, only 15 W at a 100 SPS (SNR) and total harmonic distortion (THD), in addition to the throughput. more traditional dc parameters of gain, offset, and linearity. It consumes 7 W maximum when in power-down. It is fabricated using Analog Devices high performance, 0.6 micron 3. Superior INL CMOS process and is available in a 48-lead LQFP and a tiny The AD7663 has a maximum integral nonlinearity of 3 LSB 48-lead LFCSP with operation specified from 40C to +85C. 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. REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. may result from its use. No license is granted by implication or otherwise Tel: 781/329-4700 www.analog.com under any patent or patent rights of Analog Devices. Trademarks and Fax: 781/326-8703 2003 Analog Devices, Inc. All rights reserved. registered trademarks are the property of their respective companies.(40(40 C to +85C to +85 C, AVDD = DVDD = 5 V, OVDD =C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise 2.7 V to 5.25 V, unless otherwise notednoted..)) AD7663SPECIFICATIONS Parameter Conditions Min Typ Max Unit RESOLUTION 16 Bits ANALOG INPUT Voltage Range V V 4 REF, 0 V to 4 REF, 2 REF (See Table I) IND INGND Common-Mode Input Voltage V 0.1 +0.5 V INGND Analog Input CMRR f = 45 kHz 62 dB IN Input Impedance See Table I THROUGHPUT SPEED Complete Cycle 4s Throughput Rate 0 250 kSPS DC ACCURACY 1 Integral Linearity Error 3+3 LSB No Missing Codes 16 Bits Transition Noise 0.7 LSB 2 Bipolar Zero Error , T to T 5 V Range 25 +25 LSB MIN MAX Other Range 0.06 +0.06 % of FSR 2 Bipolar Full-Scale Error , T to T 0.25 +0.25 % of FSR MIN MAX 2 Unipolar Zero Error , T to T 0.18 +0.18 % of FSR MIN MAX 2 Unipolar Full-Scale Error , T to T 0.38 +0.38 % of FSR MIN MAX Power Supply Sensitivity AVDD = 5 V 5% 0.1 LSB AC ACCURACY 3 Signal-to-Noise f = 10 kHz 89 90 dB IN f = 100 kHz 90 dB IN Spurious-Free Dynamic Range f = 100 kHz 100 dB IN Total Harmonic Distortion f = 100 kHz 100 dB IN Signal-to-(Noise+Distortion) f = 10 kHz 88.5 90 dB IN f = 100 kHz, 60 dB Input 30 dB IN 3 dB Input Bandwidth 800 kHz SAMPLING DYNAMICS Aperture Delay 2ns Aperture Jitter 5 ps rms Transient Response Full-Scale Step 2.75 s REFERENCE External Reference Voltage Range 2.3 2.5 AVDD 1.85 V External Reference Current Drain 250 kSPS Throughput 50 A DIGITAL INPUTS Logic Levels V 0.3 +0.8 V IL V +2.0 DVDD + 0.3 V IH I 1+1A IL I 1+1A IH DIGITAL OUTPUTS Data Format Parallel or Serial 16-Bit Pipeline Delay Conversion Results Available Immediately after Completed Conversion V I = 1.6 mA 0.4 V OL SINK V I = 500 A OVDD 0.6 V OH SOURCE POWER SUPPLIES Specified Performance AVDD 4.75 5 5.25 V DVDD 4.75 5 5.25 V 4 OVDD 2.7 5.25 V Operating Current 250 kSPS Throughput AVDD 5mA 5 DVDD 1.8 mA 5 OVDD 10 A 6 5 Power Dissipation 250 kSPS Throughput 35 41 mW 5 100 SPS Throughput 15 W 7 In Power-Down Mode 7W 2 REV. B