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AD671KD-750 датащи(PDF) 1 Page - Analog Devices |
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AD671KD-750 датащи(HTML) 1 Page - Analog Devices |
1 / 16 page FUNCTIONAL BLOCK DIAGRAM AIN BPO/UPO ENCODE REF IN ACOM DCOM LATCHES CORRECTION LOGIC RANGE SELECT X4 COARSE 4-BIT FLASH 8-BIT LADDER MATRIX FINE 4-BIT FLASH AD671 3 4 4 8 12 20 DAC OTR MSB BIT1-12 DAV 21 16 19 23 22 24 17 18 3-BIT FLASH 3 DAC 3-BIT FLASH 14 13 15 12 1 VCC V LOGIC EE V REV. B 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Monolithic 12-Bit 2 MHz A/D Converter AD671 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FEATURES 12-Bit Resolution 24-Pin “Skinny DIP” Package Conversion Time: 500 ns max—AD671J/K/S-500 Conversion Time: 750 ns max—AD671J/K/S-750 Low Power: 475 mW Unipolar (0 V to +5 V, 0 V to +10 V) and Bipolar Input Ranges ( 5 V) Twos Complement or Offset Binary Output Data Out-of-Range Indicator MIL-STD-883 Compliant Versions Available PRODUCT DESCRIPTION The AD671 is a high speed monolithic 12-bit A/D converter offering conversion rates of up to 2 MHz (500 ns conversion time). The combination of a merged high speed bipolar/CMOS process and a novel architecture results in a combination of speed and power consumption far superior to previously avail- able hybrid implementations. Additionally, the greater reliability of monolithic construction offers improved system reliability and lower costs than hybrid designs. The AD671 uses a subranging flash conversion technique, with digital error correction for possible errors introduced in the first part of the conversion cycle. An on-chip timing generator pro- vides strobe pulses for each of the four internal flash cycles and assures adequate settling time for the interflash residue ampli- fier. A single ENCODE pulse is used to control the converter. The performance of the AD671 is made possible by using high speed, low noise bipolar circuitry in the linear sections and low power CMOS for the logic sections. Analog Devices’ ABCMOS-1 process provides both high speed bipolar and 2-micron CMOS devices on a single chip. Laser trimmed thin-film resistors are used to provide accuracy and temperature stability. The AD671 is available in two conversion speeds and perfor- mance grades. The AD671J and K grades are specified for op- eration over the 0 °C to +70°C temperature range. The AD671S grades are specified for operation over the –55 °C to +125°C temperature range. All grades are available in a 0.300 inch wide 24-pin ceramic DIP. The J and K grades are also available in a 24-pin plastic DIP. PRODUCT HIGHLIGHTS 1. The AD671 offers a single chip 2 MHz analog-to-digital conversion function in a space saving 24-pin DIP. 2. Input signal ranges are 0 V to +5 V and 0 V to +10 V unipo- lar, and –5 V to +5 V bipolar, selected by pin strapping. In- put resistance is 1.5 k Ω. Power supplies are +5 V and –5 V, and typical power consumption is less than 500 mW. 3. The external +5 V reference can be chosen to suit the dc ac- curacy and temperature drift requirements of the application. 4. Output data is available in unipolar, bipolar offset or bipolar twos complement binary format. 5. An OUT OF RANGE output bit indicates when the input signal is beyond the AD671’s input range. 6. The AD671 is available in versions compliant with the MIL- STD-883. Refer to the Analog Devices Military Products Databook or current AD671/883B data sheet for detailed specifications. |
Аналогичный номер детали - AD671KD-750 |
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Аналогичное описание - AD671KD-750 |
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