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AD7664 Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD7664 Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 24 page REV. E a AD7664* 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 may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2004 Analog Devices, Inc. All rights reserved. 16-Bit, 570 kSPS PulSAR® Unipolar CMOS ADC FUNCTIONAL BLOCK DIAGRAM SWITCHED CAP DAC 16 CONTROL LOGIC AND CALIBRATION CIRCUITRY CLOCK AD7664 D[15:0] BUSY RD CS SER/ PAR OB/ 2C OGND OVDD DGND DVDD AVDD AGND REF REFGND IN INGND PD RESET SERIAL PORT PARALLEL INTERFACE CNVST WARP IMPULSE FEATURES Throughput: 570 kSPS (Warp Mode) 500 kSPS (Normal Mode) 444 kSPS (Impulse Mode) INL: 2.5 LSB Max ( 0.0038% of Full Scale) 16-Bit Resolution with No Missing Codes S/(N+D): 90 dB Typ @ 45 kHz THD: –100 dB Typ @ 45 kHz Analog Input Voltage Range: 0 V to 2.5 V Both AC and DC Specifications No Pipeline Delay Parallel and Serial 5 V/3 V Interface SPI®/QSPI TM/MICROWIRETM/DSP Compatible Single 5 V Supply Operation Power Dissipation 115 mW Maximum, 21 W @ 100 SPS Power-Down Mode: 7 W Max Package: 48-Lead Quad Flat Pack (LQFP) 48-Lead Chip Scale Package (LFCSP) Pin-to-Pin Compatible Upgrade of the AD7660 APPLICATIONS Data Acquisition Instrumentation Digital Signal Processing Spectrum Analysis Medical Instruments Battery-Powered Systems Process Control GENERAL DESCRIPTION The AD7664 is a 16-bit, 570 kSPS, charge redistribution SAR, analog-to-digital converter 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 AD7664 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 features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous conversion rate applications, and for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput. It is fabricated using Analog Devices’ high performance, 0.6 micron CMOS process, with correspondingly low cost and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from –40 °C to +85°C. PRODUCT HIGHLIGHTS 1. Fast Throughput The AD7664 is a 570 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. 2. Superior INL The AD7664 has a maximum integral nonlinearity of 2.5 LSBs with no missing 16-bit code. 3. Single-Supply Operation The AD7664 operates from a single 5 V supply and dissipates only a maximum of 115 mW. In Impulse Mode, its power dissipation decreases with the throughput to, for instance, only 21 µW at a 100 SPS throughput. It consumes 7 µW maximum when in power-down. 4. Serial or Parallel Interface Versatile parallel or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic. Table I. PulSAR Selection Type/kSPS 100–250 500–570 800–1000 Pseudo AD7651 AD7650/AD7652 AD7653 Differential AD7660/AD7661 AD7664/AD7666 AD7667 True Bipolar AD7663 AD7665 AD7671 True AD7675 AD7676 AD7677 Differential 18-Bit AD7678 AD7679 AD7674 Simultaneous/ AD7654 Multichannel AD7655 |
Codice articolo simile - AD7664_15 |
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Descrizione simile - AD7664_15 |
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