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AD7677AST 数据表(PDF) 1 Page - Analog Devices |
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AD7677AST 数据表(HTML) 1 Page - Analog Devices |
1 / 20 page REV. 0 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 AD7677* 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., 2001 16-Bit, 1 LSB INL, 1 MSPS Differential ADC FUNCTIONAL BLOCK DIAGRAM CONTROL LOGIC AND CALIBRATION CIRCUITRY CLOCK OB/ 2C 16 DATA[15:0] BUSY CS SER/ PAR OGND OVDD DGND DVDD SERIAL PORT PARALLEL INTERFACE BYTESWAP RD AVDD AGND REF REFGND PD RESET CNVST IN– SWITCHED CAP DAC AD7677 IN+ IMPULSE WARP FEATURES Throughput: 1 MSPS INL: 1 LSB Max ( 0.0015% of Full-Scale) 16 Bits Resolution with No Missing Codes S/(N+D): 94 dB Typ @ 45 kHz THD: –110 dB Typ @ 45 kHz Differential Input Range: 2.5 V Both AC and DC Specifications No Pipeline Delay Parallel (8/16 Bits) and Serial 5 V/3 V Interface Single 5 V Supply Operation 115 mW Typical Power Dissipation, 15 W @ 100 SPS Power-Down Mode: 7 W Max Package: 48-Lead Quad Flat Pack (LQFP) Pin-to-Pin Compatible Upgrade of the AD7664/AD7675/ AD7676 APPLICATIONS CT Scanners Data Acquisition Instrumentation Spectrum Analysis Medical Instruments Battery-Powered Systems Process Control GENERAL DESCRIPTION The AD7677 is a 16-bit, 1 MSPS, charge redistribution SAR, fully differential, 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 AD7677 is hardware factory calibrated and 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) 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 throughput. It is available in a 48-lead LQFP with operation specified from –40 °C to +85°C. PRODUCT HIGHLIGHTS 1. Excellent INL The AD7677 has a maximum integral nonlinearity of 1 LSB with a no missing 16-bit code. 2. Superior AC Performances The AD7677 has a minimum dynamic of 92 dB, 94 dB typical. 3. Fast Throughput The AD7677 is a 1 MSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry. 4. Single-Supply Operation The AD7677 operates from a single 5 V supply and typically dissipates only 115 mW. Its power dissipation decreases with the throughput. It consumes 7 µW maximum when in power-down. 5. Serial or Parallel Interface Versatile parallel (8 or 16 bits) or 2-wire serial interface arrangement compatible with both 3 V or 5 V logic. *Patent pending |
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类似说明 - AD7677AST |
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