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AD773AJD 데이터시트(PDF) 1 Page - Analog Devices |
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AD773AJD 데이터시트(HTML) 1 Page - Analog Devices |
1 / 16 page FUNCTIONAL BLOCK DIAGRAM A/D DAC CORRECTION LOGIC OUTPUT BUFFERS TIMING CONTROL THA THA THA A/D DAC A/D 26 23 27 21 4 24 6 5, 28 3, 25 20 19 AD773A REFIN REFGND AGND DGND DRGND AVDD AV SS DV DD DRVDD 7, 22 8, 21 OTR MSB CLOCK VINA VINB BIT 1 (MSB) BIT 10 (LSB) 18 9 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a 10-Bit, 20 MSPS Monolithic A/D Converter AD773A One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 PRODUCT DESCRIPTION The AD773A is a monolithic 10-bit, 20 Msps analog-to-digital converter incorporating an on-board, high performance track- and-hold amplifier (THA). The AD773A converts video bandwidth signals without the use of an external THA. The AD773A implements a multistage differential pipelined architecture with output error correction logic. The AD773A offers accurate performance and guarantees no missing codes over the full operating temperature range. Output data is presented in binary and twos complement format. An out of range (OTR) signal indicates the analog input voltage is beyond the specified input range. OTR can be decoded with the MSB/MSB pins to signal an underflow or overflow condition. The high impedance reference input allows multiple AD773As to be driven in parallel from a single reference. The combined dc precision and dynamic performance of the AD773A is useful in a variety of applications. Typical applications include: video enhancement, HDTV, ghost cancellation, ultrasound imaging, radar and high speed data acquisition. The AD773A was designed using Analog Devices’ ABCMOS-1 process which utilizes high speed bipolar and 2-micron CMOS transistors on a single chip. High speed, precision analog circuits are now combined with high density logic circuits. Laser trimmed thin film resistors are used to optimize accuracy and temperature stability. The AD773A is packaged in a 28-pin ceramic DIP and is available in commercial (0 °C to +70°C) and military (–55°C to +125 °C) grades. FEATURES Monolithic 10-Bit, 20 MSPS A/D Converter Low Power Dissipation: 1.0 W Signal-to-Noise Plus Distortion Ratio fIN = 1 MHz: 56 dB fIN = 10 MHz: 54 dB Guaranteed No Missing Codes On-Chip Track-and-Hold Amplifier 100 MHz Full Power Bandwidth High Impedance Reference Input Out of Range Output Twos Complement and Binary Output Data Available in Commercial and Military Temperature Ranges (See Military/Aerospace Reference Manual for Specifications) PRODUCT HIGHLIGHTS 1. On-board THA The high impedance differential input THA eliminates the need for external buffering or sample and hold amplifiers. The THA offers the choice of differential or single-ended inputs. Input current is typically 5 µA. 2. High Impedance Reference Input The high impedance reference input (200 k Ω) allows direct connection with standard +2.5 V references, such as the AD680, AD580 and REF43. 3. Output Data Flexibility Output data is available in bipolar offset and bipolar twos complement binary format. 4. Out of Range (OTR) The OTR output bit indicates when the input signal is beyond the AD773A’s input range. 5. Military Temperature Range |
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