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AD7118 Datasheet(PDF) 1 Page - Analog Devices |
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AD7118 Datasheet(HTML) 1 Page - Analog Devices |
1 / 6 page 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 LOGDAC CMOS Logarithmic D/A Converter AD7118* One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 GENERAL DESCRIPTION The LOGDAC ® AD7118 is a CMOS multiplying D/A con- verter which attenuates an analog input signal over the range 0 to –85.5 dB in 1.5 dB steps. The analog output is determined by a six-bit attenuation code applied to the digital inputs. Operating frequency range of the device is from dc to several hundred kHz. The device is manufactured using an advanced monolithic silicon gate thin-film on CMOS process and is packaged in a 14-pin dual-in-line package. ORDERING INFORMATION Specified Temperature Accuracy Package Model Range Range Option 1 AD7118KN 0 °C to +70°C 0 to 42 dB N-16 AD7118LN 0 °C to +70°C 0 to 48 dB N-16 AD7118BQ –25 °C to +85°C 0 to 42 dB Q-16 AD7118CQ –25 °C to +85°C 0 to 48 dB Q-16 AD7118TQ 2 –55 °C to +125°C 0 to 42 dB Q-16 AD7118UQ 2 –55 °C to +125°C 0 to 48 dB Q-16 NOTES 1N = Plastic DIP; Q = Cerdip. 2To order MIL-STD-883, Class B processed parts, add /883B to part number. *Protected by U.S. Patent No. 4521,764. LOGDAC is a registered trademark of Analog Devices, Inc. FEATURES Dynamic Range 85.5 dB Resolution 1.5 dB Full 25 V Input Range Multiplying DAC Full Military Temperature Range –55 C to +125 C Low Distortion Low Power Consumption Latch Proof Operation (Schottky Diodes Not Required) Single 5 V to 15 V Supply APPLICATIONS Digitally Controlled AGC Systems Audio Attenuators Wide Dynamic Range A/D Converters Sonar Systems Function Generators FUNCTIONAL DIAGRAM PIN CONFIGURATION OBSOLETE |
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