16-Bit, 100 kSPS PulSAR a Unipolar CMOS ADC AD7660 FEATURES FUNCTIONAL BLOCK DIAGRAM Throughput: 100 kSPS AVDD AGND REF REFGND DVDD DGND INL: 3 LSB Max ( 0.0046% of Full-Scale) 16-Bit Resolution with No Missing Codes OVDD AD7660 S/(N+D): 87 dB Min 10 kHz, 90 dB Typ 45 kHz OGND SERIAL THD: 96 dB Max 10 kHz PORT IN SWITCHED Analog Input Voltage Range: 0 V to 2.5 V 16 CAP DAC INGND D 15:0 Both AC and DC Specifications No Pipeline Delay BUSY PARALLEL Parallel and Serial 5 V/3 V Interface INTERFACE RD CLOCK SPI /QSPI/MICROWIRE/DSP Compatible PD CS Single 5 V Supply Operation RESET CONTROL LOGIC AND SER/PAR CALIBRATION CIRCUITRY 21 mW Typical Power Dissipation, 21 W 100 SPS OB/2C Power-Down Mode: 7 W Max Package: 48-Lead Quad Flatpack (LQFP) CNVST 48-Lead Chip Scale Package (LFCSP) Pin-to-Pin Compatible with the AD7664 Table I. PulSAR Selection APPLICATIONS Data Acquisition Type/kSPS 100250 500570 8001000 Battery-Powered Systems Pseudo AD7651 AD7650/AD7652 AD7653 PCMCIA Instrumentation Differential AD7660/AD7661 AD7664/AD7666 AD7667 Automatic Test Equipment True Bipolar AD7663 AD7665 AD7671 Scanners True AD7675 AD7676 AD7677 Medical Instruments Differential Process Control 18-Bit AD7678 AD7679 AD7674 GENERAL DESCRIPTION Simultaneous/ AD7654 The AD7660 is a 16-bit, 100 kSPS, charge redistribution SAR, Multichannel AD7655 analog-to-digital converter that operates from a single 5 V power supply. The part contains an internal conversion clock, error cor- PRODUCT HIGHLIGHTS rection circuits, and both serial and parallel system interface ports. 1. Fast Throughput The AD7660 is hardware factory-calibrated and is comprehen- The AD7660 is a 100 kSPS, charge redistribution, 16-bit sively tested to ensure ac parameters such as signal-to-noise ratio SAR ADC with internal error correction circuitry. (SNR) and total harmonic distortion (THD), in addition to the 2. Superior INL more traditional dc parameters of gain, offset, and linearity. The AD7660 has a maximum integral nonlinearity of 3 LSBs It is fabricated using Analog Devices high performance, with no missing 16-bit code. 0.6 micron CMOS process with correspondingly low cost and is 3. Single-Supply Operation available in a 48-lead LQFP and a tiny 48-lead LFCSP with The AD7660 operates from a single 5 V supply and only operation specified from 40C to +85C. dissipates 21 mW typical. Its power dissipation decreases with the throughput to, for instance, only 21 mW at a 100 SPS throughput. It consumes 7 mW maximum when in power-down. 4. Serial or Parallel Interface Versatile parallel or 2-wire serial interface arrangement com- patible with both 3 V or 5 V logic. REV. E 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 registered trademarks are the property of their respective owners. Fax:781/326-8703 200 1-201 6 Analog Devices, Inc. All rights reserved.AD7660SPECIFICATIONS (40 C to +85 C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.) Parameter Conditions Min Typ Max Unit RESOLUTION 16 Bits ANALOG INPUT Voltage Range V V 0V V IN INGND REF Operating Input Voltage V 0.1 +3 V IN V 0.1 +0.5 V INGND Analog Input CMRR f = 25 kHz 70 dB IN Input Current 100 kSPS Throughput 325 nA Input Impedance See Analog Input Section THROUGHPUT SPEED Complete Cycle 10 ms Throughput Rate 0 100 kSPS DC ACCURACY 1 Integral Linearity Error 3 +3 LSB Differential Linearity Error 1 +1.75 LSB No Missing Codes 16 Bits 2 Transition Noise 0.75 LSB 3 Full-Scale Error REF = 2.5 V 0.045 0.08 % of FSR 3 Unipolar Zero Error 1 5 LSB Power Supply Sensitivity AVDD = 5 V 5% 3 LSB AC ACCURACY 4 Signal-to-Noise f = 10 kHz 87 90 dB IN f = 45 kHz 90 dB IN Spurious-Free Dynamic Range f = 10 kHz 96 dB IN f = 45 kHz 100 dB IN Total Harmonic Distortion f = 10 kHz 96 dB IN f = 45 kHz 100 dB IN Signal-to-(Noise+Distortion) f = 10 kHz 87 dB IN f = 45 kHz 90 dB IN 60 dB Input 30 dB 3 dB Input Bandwidth 820 kHz SAMPLING DYNAMICS Aperture Delay 2ns Aperture Jitter 5 ps rms Transient Response Full-Scale Step 8 ms REFERENCE External Reference Voltage Range 2.3 2.5 AVDD 1.85 V External Reference Current Drain 100 kSPS Throughput 22 mA POWER SUPPLIES Specified Performance AVDD 4.75 5 5.25 V DVDD 4.75 5 5.25 V OVDD 2.7 5.25 V Operating Current 100 kSPS Throughput AVDD 3.2 mA 5 DVDD 1mA 5 OVDD 10 mA 5 Power Dissipation 100 kSPS Throughput 21 25 mW 100 SPS Throughput 21 mW 5, 6 in Power-Down Mode 7 mW DIGITAL INPUTS Logic Levels V 0.3 +0.8 V IL V +2.0 OVDD + 0.3 V IH I 1 +1 mA IL I 1 +1 mA 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 mA OVDD 0.6 V OH SOURCE REV. 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