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AD568 데이터시트(PDF) 1 Page - Analog Devices |
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AD568 데이터시트(HTML) 1 Page - Analog Devices |
1 / 14 page FUNCTIONAL BLOCK DIAGRAM REV. A 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 12-Bit Ultrahigh Speed Monolithic D/A Converter AD568 FEATURES Ultrahigh Speed: Current Settling to 1 LSB in 35 ns High Stability Buried Zener Reference on Chip Monotonicity Guaranteed Over Temperature 10.24 mA Full-Scale Output Suitable for Video Applications Integral and Differential Linearity Guaranteed Over Temperature 0.3" “Skinny DIP” Packaging Variable Threshold Allows TTL and CMOS Interface MIL-STD-883 Compliant Versions Available PRODUCT DESCRIPTION The AD568 is an ultrahigh-speed, 12-bit digital-to-analog con- verter (DAC) settling to 0.025% in 35 ns. The monolithic de- vice is fabricated using Analog Devices’ Complementary Bipolar (CB) Process. This is a proprietary process featuring high-speed NPN and PNP devices on the same chip without the use of di- electric isolation or multichip hybrid techniques. The high speed of the AD568 is maintained by keeping impedance levels low enough to minimize the effects of parasitic circuit capacitances. The DAC consists of 16 current sources configured to deliver a 10.24 mA full-scale current. Multiple matched current sources and thin-film ladder techniques are combined to produce bit weighting. The DAC’s output is a 10.24 mA full scale (FS) for current output applications or a 1.024 V FS unbuffered voltage output. Additionally, a 10.24 V FS buffered output may be gen- erated using an onboard 1 k Ω span resistor with an external op amp. Bipolar ranges are accomplished by pin strapping. Laser wafer trimming insures full 12-bit linearity. All grades of the AD568 are guaranteed monotonic over their full operating temperature range. Furthermore, the output resistance of the DAC is trimmed to 100 Ω ± 1.0%. The gain temperature coeffi- cient of the voltage output is 30 ppm/ °C max (K). The AD568 is available in three performance grades. The AD568JQ and KQ are available in 24-pin cerdip (0.3") packages and are specified for operation from 0 °C to +70°C. The AD568SQ features operation from –55 °C to +125°C and is also packaged in the hermetic 0.3" cerdip. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 PRODUCT HIGHLIGHTS 1. The ultrafast settling time of the AD568 allows leading edge performance in waveform generation, graphics display and high speed A/D conversion applications. 2. Pin strapping provides a variety of voltage and current output ranges for application versatility. Tight control of the abso- lute output current reduces trim requirements in externally- scaled applications. 3. Matched on-chip resistors can be used for precision scaling in high speed A/D conversion circuits. 4. The digital inputs are compatible with TTL and +5 V CMOS logic families. 5. Skinny DIP (0.3") packaging minimizes board space require- ments and eases layout considerations. 6. The AD568 is available in versions compliant with MIL- STD-883. Refer to the Analog Devices Military Products Databook or current AD568/883B data sheet for detailed specifications. |
유사한 부품 번호 - AD568_15 |
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유사한 설명 - AD568_15 |
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