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Analog Devices Inc. AD390TD
- Part No.:
- AD390TD
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital to Analog Converters (DAC)
- Package:
- 28-CDIP (0.600", 15.24mm)
- Description:
- IC DAC 12BIT V-OUT 28CDIP
- Quantity:
Unit Price:$0
Ext Price:$0
- Payment:
- Shipping:
Product Details
AD390TD - ADI High-Precision Military Grade Quad 12-Bit DAC
The AD390TD is a high-reliability, monolithic Quad 12-bit Digital-to-Analog Converter manufactured by Analog Devices. It integrates four independent DACs with double-buffered latches and a microprocessor-compatible interface into a hermetic 28-pin ceramic package. Engineered for the most demanding environments, the TD-grade ensures full 12-bit monotonicity and precision across the complete military temperature range of -55°C to +125°C.
Standard Compliance: Typically supplied as MIL-STD-883B compliant, this device is a critical building block for aerospace and defense systems requiring multi-channel precision.
Overview & Precision Engineering
The AD390TD is designed to simplify multi-channel analog output designs in high-density systems. By providing four DACs in a single 28-pin Side-Brazed Ceramic DIP, it significantly reduces component count, power consumption, and PCB complexity compared to using four separate discrete DACs.
This device features laser-trimmed resistors to ensure excellent gain and offset stability. Its microprocessor-compatible interface allows for direct connection to 8-bit or 16-bit data buses, while the double-buffered latches enable the simultaneous updating of all four analog outputs to prevent signal skew in synchronized control loops.
About Analog Devices (ADI)
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) technologies. For decades, ADI has provided the foundational ICs used to bridge the gap between the physical and digital worlds.
Their military and aerospace division specializes in parts that withstand extreme vibration, radiation, and thermal stress. The AD390 series is part of a legacy of precision DACs that have powered defense electronics for over 30 years.
Key Advantages
Consolidates four 12-bit DACs into one package, saving up to 75% of board space in multi-channel designs.
Guaranteed performance from -55°C to +125°C, making it suitable for unpressurized aircraft bays.
Double-buffered inputs allow for synchronous output changes across all four channels.
Optimized control logic for seamless integration with standard 8-bit and 16-bit processor buses.
Package & Physical Dimensions
The AD390TD is housed in a 28-pin Side-Brazed Ceramic DIP (D-28). This hermetic package is essential for preventing moisture ingress and ensuring long-term reliability in harsh environments.
- Sealing: Hermetic solder or weld seal.
- Lead Finish: Typically Gold-plated for superior corrosion resistance.
- Durability: Tested for thermal shock and mechanical acceleration per MIL-STD-883.
Pin Functions
The AD390 utilizes a standard addressable architecture to manage the data flow to each DAC.
Technical Specifications
| Manufacturer | Analog Devices |
|---|---|
| Resolution | 12-Bit |
| Output Channels | 4 (Quad) |
| Operating Temp | -55°C to +125°C |
| Settling Time | 8 µs (Max) |
| Interface | Parallel (Microprocessor Compatible) |
| Package | Ceramic DIP (SBDIP-28) |
| Monotonicity | Guaranteed over Temperature |
Equivalent & Replacement Guide
For the AD390TD, equivalent selection must prioritize temperature grade and MIL-Spec screening.
- AD390SD: A slightly lower specification military grade version (verify gain drift requirements).
- AD390KD/JD: Commercial/Industrial grade versions (0°C to +70°C). Not suitable for flight-critical defense hardware.
- 5962-8856201XA: The Standard Microcircuit Drawing (SMD) number often used in official government procurement.
Primary Applications
The AD390TD is a staple in multi-channel control and measurement systems:
Flight Control Avionics
Precision multi-channel control of flight surfaces and cockpit instrumentation in military aircraft.
Radar & Beam-Forming
Simultaneous adjustment of multiple analog parameters in phase-array radar and sonar systems.
Medical Imaging Systems
High-resolution analog control in legacy X-ray and CT-scan equipment requiring high stability.
Automated Test Equipment (ATE)
Provides multiple calibrated analog reference voltages in precision semiconductor test systems.
Quality & Authenticity
- MIL-STD-883B Screening: 100% burn-in and electrical testing as per military standards.
- Hermeticity: Verified using fine and gross leak testing for mission-critical reliability.
- Traceability: Every unit is supplied with full lot date code (LDC) traceability and Certificate of Conformance (CoC).
Technical FAQ
What is the difference between AD390TD and AD390SD?
Can this part be used in space applications?
Disclaimer
AD390TD Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-CDIP (0.600", 15.24mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Number of Bits:
- 12
- Number of D/A Converters:
- 4
- Settling Time:
- 8µs
- Output Type:
- Voltage - Buffered
- Differential Output:
- No
- Data Interface:
- Parallel
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±13.5V ~ 16.5V
- Voltage - Supply, Digital:
- -
- INL/DNL (LSB):
- ±0.25, ±0.5
- Architecture:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 28-CDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
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