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AD7654 Datasheet(PDF) 1 Page - Analog Devices |
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AD7654 Datasheet(HTML) 1 Page - Analog Devices |
1 / 24 page a AD7671 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 companies. 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. All rights reserved. 16-Bit, 1 MSPS CMOS ADC FUNCTIONAL BLOCK DIAGRAM DGND DVDD AVDD AGND REF REFGND SWITCHED CAP DAC CNVST IMPULSE WARP OGND 16 CONTROL LOGIC AND CALIBRATION CIRCUITRY CLOCK IND(4R) 4R OVDD AD7671 INGND PD RESET BYTESWAP SER/ PAR D[15:0] BUSY CS RD OB/ 2C SERIAL PORT PARALLEL INTERFACE INA(R) R INC(4R) 4R INB(2R) 2R FEATURES Throughput 1 MSPS (Warp Mode) 800 kSPS (Normal Mode) INL: 2.5 LSB Max ( 0.0038% of Full Scale) 16-Bit Resolution with No Missing Codes S/(N+D): 90 dB Typ @ 250 kHz THD: –100 dB Typ @ 250 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 ®/QSPI™/MICROWIRE™/DSP Compatible Single 5 V Supply Operation Power Dissipation 112 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 Upgrade of the AD7665/AD7664 APPLICATIONS Data Acquisition Communication Instrumentation Spectrum Analysis Medical Instruments Process Control GENERAL DESCRIPTION The AD7671 is a 16-bit, 1 MSPS, 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 AD7671 is hardware factory-calibrated and is comprehen- sively 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 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 AD7671 is a very high speed (1 MSPS in Warp Mode and 800 kSPS in Normal Mode), charge redistribution, 16-bit SAR ADC. 2. Single-Supply Operation The AD7671 operates from a single 5 V supply, dissipates only 112 mW typical, even lower when a reduced throughput is used with the reduced power mode (Impulse) and a power- down mode. 3. Superior INL The AD7671 has a maximum integral nonlinearity of 2.5 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. PulSAR Selection Type/kSPS 100–250 500–570 800–1000 Pseudo AD7660 AD7650 Differential AD7664 True Bipolar AD7663 AD7665 AD7671 True Differential AD7675 AD7676 AD7677 18-Bit AD7678 AD7679 AD7674 Simultaneous/ AD7654 AD7655 Multichannel REV. C 2012 ___ |
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