ADI AD660SQ
- Complete 16-bit monolithic DACPORT — on-chip 10V buried Zener reference, double-buffered latches, and output amplifier
- Dual-mode interface: serial (MSB or LSB first, daisy-chainable) or two 8-bit byte parallel load — pin selectable
- Pin-programmable output range: unipolar 0V to +10V or bipolar –10V to +10V — no external components required
- DC and AC specified: ±1 LSB INL/DNL, 83 dB SNR, 0.009% THD+N — production tested
- 24-lead CERDIP package — hermetic ceramic construction for extended reliability applications
The ADI AD660SQ is the CERDIP-packaged variant of Analog Devices' AD660 16-bit serial/byte DACPORT — the same complete DAC architecture as the plastic DIP AN and BN grades, now in a hermetic 24-lead ceramic DIP package that extends suitability to applications requiring ceramic encapsulation without full MIL-STD-883B military screening. It integrates a laser-trimmed 10.000V buried Zener reference, 16-bit BiMOS II current-steering DAC core, double-buffered latches, and a voltage output amplifier on a single die, with pin-programmable output range selection between unipolar 0V to +10V and bipolar –10V to +10V — no external components required for either configuration.
The AD660SQ occupies a practical position in the AD660 family: it provides the hermetic CERDIP package of the military AD660SQ/883B without the MIL-STD-883B screening overhead, making it the correct choice for industrial and high-reliability commercial programs where ceramic packaging is preferred but DoD qualification documentation is not a procurement requirement. The daisy-chain serial output, flexible byte-mode interface, double-buffered simultaneous update capability, and asynchronous CLR function are all present — the full AD660 feature set in a hermetic package, rated for –40°C to +85°C industrial operation. For programs that require the full military screening and –55°C to +125°C temperature rating, the 5962-9684601QLA is the MIL-STD-883B qualified procurement path for the same device.
Related Products For Your Business
For procurement teams sourcing the AD660SQ, the CERDIP package is the key specification that distinguishes it from the plastic AN and BN variants. Hermetic ceramic construction provides better long-term stability in environments with humidity cycling, temperature extremes within the industrial range, or applications where the reliability ceiling of plastic packaging is a concern — without requiring the full MIL-STD-883B qualification documentation that the AD660SQ/883B military variant carries. The complete AD660 feature set is present: daisy-chain serial interface, byte mode, double-buffered simultaneous update, and pin-programmable ±10V output range from a single on-chip laser-trimmed reference.
AD660SQ Architecture: Complete DACPORT in Hermetic CERDIP
The AD660’s BiMOS II architecture integrates everything a 16-bit analog output channel requires on a single die. The buried Zener reference is laser-trimmed to 10.000V with ±0.1% maximum error and ±15 ppm/°C maximum drift — available at a pin for external use in designs that need the reference for other components. The dual-mode digital interface covers serial operation with pin-selectable MSB-first or LSB-first data direction and a daisy-chain output pin, plus byte mode for 8-bit and 16-bit processor bus interfaces. Double-buffered latches hold each channel’s output stable during writes to the first-rank latch, and the LDAC edge transfers all channels simultaneously — enabling phase-coherent output updates across multiple AD660SQ devices in multi-DAC systems. The asynchronous CLR resets output to 0V in either unipolar or bipolar mode, providing a defined fault response state.
AD660SQ vs AD660 Family: Package and Qualification Selection
The AD660 family spans five variants covering plastic DIP, SOIC, CERDIP, and military-screened CERDIP formats:
| AD660SQ | AD660AN/BN | AD660AR/BR | 5962-9684601QLA | |
|---|---|---|---|---|
| Package | 24-Lead CERDIP | 24-Lead PDIP | 24-Lead SOIC | 24-Lead CERDIP |
| Qualification | Commercial | Commercial | Commercial | MIL-STD-883B |
| Temperature | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | –55°C to +125°C |
| Best For | Hermetic, industrial | Cost-sensitive designs | SMT board designs | Military programs |
The AD660SQ is the correct choice when ceramic hermetic packaging is required within the industrial temperature range and MIL-STD-883B documentation is not a procurement requirement. For military programs requiring –55°C to +125°C operation and full qualification documentation, the 5962-9684601QLA is the correct path.
Sourcing the ADI AD660SQ
The AD660SQ in its hermetic CERDIP package maintains consistent demand in industrial and high-reliability programs where ceramic packaging is specified without full military qualification. We carry verified inventory with full lot traceability and anti-counterfeit inspection on every order. Contact us today to confirm availability and request a quote — our team responds within 24 hours.
- CERDIP package provides hermetic sealing without MIL-STD-883B qualification overhead
- Daisy-chain serial output enables multi-DAC systems with minimum control line count
- On-chip 10.000V buried Zener reference available at pin for external signal chain use
- Asynchronous CLR resets output to 0V in either unipolar or bipolar mode — defined fault response
- Double-buffered latches enable phase-coherent simultaneous updates across multiple AD660SQ devices
- Compatible with ADSP-210x, MC68HC11 SPI, MICROWIRE, and Z80 bus architectures
- Direct upgrade path to military screening via 5962-9684601QLA without schematic changes
- Full lot traceability and anti-counterfeit inspection on every order
Frequently Asked Questions (FAQ)
What Is the ADI AD660SQ and How Does It Differ From the AD660AN?
The AD660SQ is the hermetic 24-lead CERDIP variant of the AD660 16-bit serial/byte DACPORT, rated for –40°C to +85°C industrial operation. The AD660AN uses a 24-lead plastic DIP package with identical electrical specifications. The CERDIP package provides hermetic sealing for applications where plastic packaging reliability is a concern, without the MIL-STD-883B qualification documentation that the military AD660SQ/883B carries.
What Is the Difference Between the AD660SQ and the AD660SQ/883B?
The AD660SQ and AD660SQ/883B use the same 24-lead CERDIP package and the same AD660 die. The AD660SQ/883B adds MIL-STD-883B processing and screening, extending the rated temperature range to –55°C to +125°C and providing full military qualification documentation including lot traceability and certificate of conformance. The AD660SQ is rated to –40°C to +85°C without 883B documentation. For programs requiring DoD qualification, the 5962-9684601QLA is the correct procurement path.
How Does the AD660SQ Daisy-Chain Feature Work?
In serial mode, data clocked into the AD660SQ’s input latch continues shifting through the serial output (SOUT) pin to the next device in the chain. Any number of AD660SQ devices can be cascaded, sharing the same CS and LDAC control lines. A single LDAC edge simultaneously updates all devices in the chain, enabling phase-coherent multi-channel output with minimum control line overhead.
What Output Ranges Does the AD660SQ Support?
The AD660SQ output range is pin-programmable between unipolar 0V to +10V and bipolar –10V to +10V, with no external components required for either configuration. The on-chip buried Zener reference provides the reference current and bipolar offset current for both modes.
How Do I Request a Quote for the ADI AD660SQ?
Submit an inquiry through our website contact form or email our sales team directly. We will respond within 24 hours with pricing, availability, and lead time — and can discuss long-term supply agreements for production programs.