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Product Detailed Parameters
- Description：IC DAC MONO MULTIPLYING 16CERDIP
- Series：*
- Mfr：Analog Devices Inc.
- Package：Tube
- Number of Bits：-
- Number of D/A Converters：-
- Settling Time：-
- Output Type：-
- Differential Output：-
- Data Interface：-
- Reference Type：-
- Voltage - Supply, Analog：-
- Voltage - Supply, Digital：-
- INL/DNL (LSB)：-
- Architecture：-
- Operating Temperature：-
- Package / Case：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
- Qualification：-
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Overview
The AD7111UQ/883B is a monolithic multiplying D/A converter fabricated in LC2MOS technology, featuring an internal 17-bit R-2R ladder. It attenuates analog input signals over a dynamic range of 0 dB to 88.5 dB with a nominal resolution of 0.375 dB. The device accepts an 8-bit parallel data word via onboard decode logic and operates on a single +5 V supply. Designed for military specifications under MIL-STD-883B, it provides precise digital control of signal attenuation.
Feature Summary
- Monolithic 17-bit R-2R multiplying DAC architecture
- 88.5 dB dynamic range with 0.375 dB step resolution
- Single +5 V power supply operation
- MIL-STD-883B Class B processed Cerdip package
Applications
- Audio Attenuators
- Sonar Systems
- Function Generators
- Digitally Controlled AGC Systems
Procurement Notes
Verify that the component is sourced from authorized channels to ensure compliance with MIL-STD-883B standards. Confirm the presence of the /883B suffix indicates the specific military-grade processing required for defense applications. Check datasheet revisions for any updates to electrical characteristics or pin configurations before integration.
Selection Notes
Select this part when high-resolution logarithmic attenuation is required in harsh environments. The U grade supports an extended temperature range of -55°C to +125°C. Ensure the output amplifier selection matches the low bias current requirements to minimize offset errors at high attenuation levels.
Part Context
This component belongs to the LOGDAC family of logarithmic converters. The AD7111UQ/883B variant specifically denotes the extended temperature grade (U) packaged in a 16-pin Cerdip (Q) format, processed to meet military reliability standards. It serves as a high-performance alternative to standard commercial grades for critical systems.
Replacement Considerations
The AD7111A is pin-compatible with the industry-standard AD7524, allowing for upgrades in existing designs. For direct replacements within the same family, consider the AD7111CQ or AD7111BQ for industrial temperature ranges, though they lack the extended military qualification.
