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AD7653 Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD7653 Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 23 page REV. PrA Preliminary Technical Data PRELIMINARY TECHNICAL DATA 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. a AD7667* 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 © Analog Devices, Inc., 2002 16-Bit 1 MSPS SAR Unipolar ADC with Ref FUNCTIONAL BLOCK DIAGRAM SWITCHED CAP DAC 16 CONTROL LOGIC AND CALIBRATION CIRCUITRY CLOCK AD7667 DATA[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 2.5 V REF PDREF PDBUF REFBUFIN BYTESWAP FEATURES Throughput: 1 MSPS (Warp Mode) 800 kSPS (Normal Mode) INL: ±2.5 LSB Max (±0.0038% of Full Scale) 16 Bits Resolution with No Missing Codes Analog Input Voltage Range: 0 V to 2.5 V No Pipeline Delay Parallel and Serial 5 V/3 V Interface SPI TM/QSPITM/MICROWIRETM/DSP Compatible Single 5 V Supply Operation Power Dissipation 112 mW Typ without REF, 122 mW Typ with REF 15 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 with PulSAR ADCs APPLICATIONS Data Acquisition Instrumentation Digital Signal Processing Spectrum Analysis Medical Instruments Battery-Powered Systems Process Control GENERAL DESCRIPTION The AD7667 is a 16-bit, 1 MSPS, 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, internal reference, error correction circuits, and both serial and parallel system inter- face ports. It features a very high sampling rate mode (Warp) and, for asynchronous conversion rate applications, a fast mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the through- put. 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 speci- fied from –40°C to +85°C. PRODUCT HIGHLIGHTS 1. Fast Throughput The AD7667 is a 1 MSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. 2. Internal Reference The AD7667 has an internal reference and allows for an external reference to be used. 3. Superior INL The AD7667 has a maximum integral nonlinearity of 2.5 LSB with no missing 16-bit code. 4. Single-Supply Operation The AD7667 operates from a single 5 V supply and dissipates a typical of 112 mW. In impulse mode, its power dissi- pation decreases with the throughput. It consumes 7 µW maximum when in power-down. 5. Serial or Parallel Interface Versatile parallel or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic. *Patent pending. SPI and QSPI are trademarks of Motorola Inc. MICROWIRE ia a trademark of National Semiconductor Corporation Pseudo AD7651 AD7650/52 AD7653 Differential AD7660/61 AD7664/66 AD7667 True Bipolar AD7663 AD7665 AD7671 True AD7675 AD7676 AD7677 Differential Type / kSPS 100 - 250 500 - 570 1000 PulSAR Selection |
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