Product Overview
Complete 14-Bit LC2MOS Digital-to-Analog Converter 24-Pin DIP
Condition
Used equipment pull. Visual inspection confirms intact package and clean pins. Markings legible: AD7840JN, 9409, 59596. Evaluation: Visual inspection only. Function testing not performed.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
Satisfaction guaranteed, every time.
Product Overview
The Analog Devices AD7840JN is a complete 14-bit voltage-output digital-to-analog converter built on an LC2MOS process. It integrates an internal 3 V buried Zener voltage reference and a precision output amplifier delivering a +/-3 V bipolar output range. The double-buffered digital interface accepts versatile parallel or serial data inputs, making it a reliable solution for legacy industrial instrumentation, DSP motor control systems, and precision analog synthesis.
Key Features
- 14-bit resolution with +/-3 V buffered bipolar voltage output
- Internal 3 V buried Zener reference with external reference capability
- Double-buffered interface supporting 14-bit parallel or serial data loading
- 80 dB minimum signal-to-noise ratio (SNR)
- Dual power supply operation at +/-5 V
- Standard 24-pin narrow plastic DIP package (0.300-inch row spacing)
Applications
- Replacing failed DAC stages during maintenance of legacy test and measurement boards
- Benchtop prototyping of audio synthesis, DSP interfaces, or precision waveform generators
- Restoring industrial motor drives and motion controllers requiring 14-bit bipolar drive signals
Frequently Asked Questions
What interface modes does this IC support?
The AD7840JN features a double-buffered architecture that supports both 14-bit parallel loading and serial data input modes via dedicated control pins.
What power supplies are required for operation?
This converter operates on dual +/-5 V DC power rails with typical power dissipation of 70 mW.
Why purchase an individually inspected pull instead of a bulk surplus lot?
Buying an individual, photographed unit gives you the exact date code and package format needed for board-level repair without buying surplus lots in excess volume. Flat rate shipping is $8, or free on orders over $28, shipping out same or next business day.
Proper 14-bit parallel converters from this era bridge the gap between classic digital control and precision analog hardware. Plug it into your socket and get your legacy system back online.
Shipping? $8 flat rate, free once your order passes $28 - and it leaves the Idaho warehouse the same or next business day.
