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Product Detailed Parameters
- Description：IC DAC MULTIPLYING 12BIT 24-CDIP
- 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：24-CDIP (0.300", 7.62mm)
- Supplier Device Package：24-CDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
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Overview
The AD668AQ is a monolithic, ultrahigh speed, 12-bit multiplying digital-to-analog converter manufactured by Analog Devices Inc. Fabricated using Complementary Bipolar (CB) process technology, it delivers high accuracy and rapid response to both analog and digital inputs. The device features a wideband reference input with a 15 MHz bandwidth and guarantees monotonicity over its operating temperature range of –40 °C to +85 °C. It provides a nominal 10.24 mA current output or 1.024 V voltage output, with laser-trimmed linearity and gain accuracy. The component is housed in a 24-pin ceramic dual in-line package (Cerdip).
Feature Summary
- Ultrahigh Speed: Current settling to 1 LSB in 90 ns for full-scale digital changes; voltage settling in 120 ns.
- Multiplying Capability: Analog input modulation range from 10% to 120% of nominal full scale.
- High Bandwidth Reference: 15 MHz small-signal bandwidth with 3% FS/ns slew rate.
- Guaranteed Monotonicity: Guaranteed over the full rated specification temperature range.
Applications
- Waveform generation
- Graphics display systems
- High-speed A/D conversion
Procurement Notes
Verify the specific performance grade and packaging options available for the AD668AQ. Confirm compliance requirements if MIL-STD-883 versions are needed, as standard commercial grades differ from military screened variants. Check for updated datasheet revisions to ensure parameter alignment with design specifications.
Selection Notes
Select the AD668AQ when operation between –40 °C and +85 °C is required. Choose this model over the JQ/KQ (0 °C to +70 °C) or SQ (–55 °C to +125 °C) based on thermal constraints. Ensure logic families such as STTL, HCMOS, or FAST are used to minimize glitch impulse and settling time deviations.
Part Context
The AD668 series includes grades JQ, KQ, AQ, and SQ, differentiated primarily by operating temperature ranges and linearity specifications. The AQ grade offers ±1/2 LSB linearity at 25 °C and operates from –40 °C to +85 °C. All grades utilize the same 24-pin Cerdip package and CB process technology.
Replacement Considerations
Publicly confirmed substitute part numbers are not provided in the source material. Designers should evaluate other 12-bit multiplying DACs from Analog Devices or compatible manufacturers based on pinout and electrical parameter matching.
