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AD7845SE/883B
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Product Detailed Parameters
- Description：IC DAC 12BIT MULT LC2MOS 28CLCC
- 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：-
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Overview
The AD7845SE/883B is a 12-bit CMOS multiplying digital-to-analog converter (MDAC) with an integrated output amplifier, processed to MIL-STD-883, Class B standards. It operates within an extended temperature range of -55°C to +125°C and features guaranteed monotonicity across the full temperature span. The device utilizes an LC2MOS process for precision linear components and digital circuitry integration. Key electrical specifications include a maximum settling time of 5 µs to 0.01% of full-scale range, a typical slew rate of 11 V/µs, and a unity gain small-signal bandwidth of 600 kHz. It accepts TTL and 5 V CMOS compatible digital inputs.
Feature Summary
- Complete 12-bit Multiplying DAC with on-chip output amplifier providing 4-quadrant multiplication capability.
- Guaranteed monotonic operation from -55°C to +125°C with laser-trimmed low input offset voltage.
- Integrated application resistors (RA, RB, RC) for simplified gain ranging and voltage offsetting.
- MIL-STD-883, Class B processed hermetic E-28A (PLCC) package suitable for aerospace and military environments.
Applications
- Automatic Test Equipment
- Digital Attenuators
- Programmable Power Supplies
- Programmable Gain Amplifiers
- Digital-to-4–20 mA Converters
Procurement Notes
Verify that the component is sourced from authorized distributors or qualified suppliers to ensure authenticity. Confirm that the part number includes the /883B suffix to guarantee compliance with MIL-STD-883, Class B processing requirements. Check for lot traceability and certificate of conformity documentation required for military and aerospace procurement protocols.
Selection Notes
Select the AD7845SE/883B when extended temperature performance (-55°C to +125°C) and high reliability are mandatory. The SE variant specifically denotes the PLCC package option. Ensure system power supplies accommodate the ±15 V nominal requirement (14.25 V to 15.75 V range). Verify interface compatibility with microprocessor systems, as the device requires standard CS and WR signals for latch control.
Part Context
This component belongs to the AD7845 family of complete 12-bit multiplying DACs. The 'S' designation indicates the extended temperature grade (-55°C to +125°C), while '/883B' confirms adherence to MIL-STD-883 testing and screening procedures. The 'E' package code corresponds to the 28-terminal Leadless Ceramic Chip Carrier form factor.
Replacement Considerations
Public confirmed substitute part numbers: AD7845TQ/883B (offers -1/2 LSB relative accuracy at +25°C compared to -1 LSB for the SE version, maintaining identical temperature range and package).
