Overview
The AD7739BRU-REEL is a high-precision, high-throughput analog front end integrated circuit produced by Analog Devices Inc. This device is part of the AD7739 series and is known for its true 16-bit peak-to-peak resolution and fast conversion times, making it ideal for high-resolution multiplexing applications. The AD7739BRU-REEL operates over an extended industrial temperature range of –40°C to +105°C and is packaged in a 24-lead Thin Shrink Small Outline Package (TSSOP).
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Analog Input Voltage Range | ±0.625 V, ±1.25 V, ±2.5 V, 0 to 2.5 V | V | Unipolar and bipolar ranges | ||
| Common-Mode/Absolute Voltage | 0.2 | AVDD - 0.3 | V | AIN, AINCOM | |
| Analog Input Slew Rate | 0.5 | V/conv. time | AIN absolute voltage > 3 V | ||
| Analog Input Current | 1 | 5 | nA | Only one channel, chop disabled | |
| Reference Input Voltage | 2.475 | 2.5 | 2.525 | V | REFIN(+) to REFIN(-) |
| Power Supply | 5 V analog, 3 V or 5 V digital | V | Single-supply operation | ||
| Conversion Time | 250 μs (4 kHz channel switching) | μs | For 16-bit performance | ||
| Package | 24-lead TSSOP | ||||
Key Features
- High precision with true 16-bit peak-to-peak resolution.
- High throughput with a total conversion time of 250 μs (4 kHz channel switching).
- Eight single-ended or four fully differential input channels with various input ranges.
- Single-supply operation with 5 V analog and 3 V or 5 V digital supply.
- 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Schmitt trigger on logic inputs for noise immunity.
- Per channel system calibration options.
- No-reference detect capability for differential reference input.
- Extended industrial temperature range of –40°C to +105°C.
Applications
- Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCSs).
- Multiplexing applications.
- Process control.
- Industrial instrumentation.
Q & A
- What is the AD7739BRU-REEL?
The AD7739BRU-REEL is a high-precision, high-throughput analog front end integrated circuit produced by Analog Devices Inc.
- What are the key input voltage ranges of the AD7739BRU-REEL?
The device supports input voltage ranges of ±0.625 V, ±1.25 V, ±2.5 V, and 0 to 2.5 V.
- What is the conversion time for 16-bit performance?
The conversion time is 250 μs at 4 kHz channel switching.
- What types of serial interfaces are supported by the AD7739BRU-REEL?
The device supports 3-wire serial interfaces compatible with SPI, QSPI, MICROWIRE, and DSP.
- What is the operating temperature range of the AD7739BRU-REEL?
The device operates over an extended industrial temperature range of –40°C to +105°C.
- What package type is the AD7739BRU-REEL available in?
The device is packaged in a 24-lead Thin Shrink Small Outline Package (TSSOP).
- Does the AD7739BRU-REEL support single-supply operation?
Yes, it supports single-supply operation with a 5 V analog supply and 3 V or 5 V digital supply.
- What are some common applications of the AD7739BRU-REEL?
Common applications include PLCs/DCSs, multiplexing applications, process control, and industrial instrumentation.
- Is the AD7739BRU-REEL RoHS compliant?
The 'Z' suffix in AD7739BRUZ denotes RoHS compliance. The AD7739BRU-REEL itself is not RoHS compliant, but the AD7739BRUZ is the recommended replacement for RoHS compliance.
- How many input channels does the AD7739BRU-REEL have?
The device features eight single-ended or four fully differential input channels.
