Features and Benefits
- Fast (2.4 µs) 14-Bit ADC
- Four Simultaneously Sampled Inputs
- Four Track/Hold Amplifiers
- 0.35 µs Track/Hold Acquisition Time
- 2.4 µs Conversion Time per Channel
- HW/SW Select of Channel Sequence for Conversion
- Single Supply Operation
- Low Power, 115 mW Typ
- Selection of Input Ranges:
- ±10 V, ±5 V and ±2.5 V
0 V to 5 V and 0 V to 2.5 V
- High Speed Parallel Interface Allows Interfacing to 3 V Processors
- Power Saving Mode, 15 µW Typ
- Overvoltage Protection on Analog Inputs
The AD7865 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single +5 V supply. The part contains a 2.5 µs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analog inputs. The part accepts analog input ranges of ±10 V, ±5 V or ±2.5 V. Overvoltage protection on the analog inputs for the part allows the input voltage to go to ±20 V without damaging the parts or affecting a conversion in progress.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
Designing Power Supplies for High Speed ADC2/1/2012
High-Performance Multichannel Power-Line Monitoring with Simultaneous-Sampling ADCs1/1/2007 Analog Dialogue
Analog-to-Digital Converter Architectures and Choices for System Design9/1/1999 Analog Dialogue
Tools & Simulations
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.