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AD7118 Datasheet(PDF) 1 Page - Analog Devices

Part # AD7118
Description  CMOS Logarithmic D/A Converter
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7118 Datasheet(HTML) 1 Page - Analog Devices

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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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