Overview
The AD7739BRUZ is a high-precision, high-throughput analog front end produced by Analog Devices Inc. This component is designed for high-resolution multiplexing applications and features true 16-bit peak-to-peak resolution with a total conversion time of 250 μs at 4 kHz channel switching. It operates on a single 5 V analog supply and can be configured via a simple digital interface, allowing users to balance noise performance against data throughput up to 15 kHz. The device is specified for operation over an extended industrial temperature range of –40°C to +105°C.
Key Specifications
| Parameter | Value | 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 V to AVDD - 0.3 V | V | |
| Analog Input Slew Rate | 0.5 V/conv. time | V/s | AIN absolute voltage > 3 V |
| Analog Input Current | 1 to 5 nA | nA | Only one channel, chop disabled |
| Reference Input Voltage | 2.475 to 2.525 V | V | |
| Conversion Time | 250 μs | μs | At 4 kHz channel switching |
| Digital Supply Voltage | 3 V or 5 V | V | |
| Package Type | 24-Lead TSSOP | ||
| Operating Temperature Range | –40°C to +105°C | °C |
Key Features
- Eight single-ended or four fully differential input channels with various unipolar and bipolar input ranges.
- True 16-bit peak-to-peak resolution with a total conversion time of 250 μs at 4 kHz channel switching.
- Single-supply operation with 5 V analog supply 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.
Applications
- Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCSs).
- Multiplexing applications.
- Process control.
- Industrial instrumentation.
Q & A
- What is the operating temperature range of the AD7739BRUZ?
The AD7739BRUZ operates over an extended industrial temperature range of –40°C to +105°C. - What are the available input voltage ranges for the AD7739BRUZ?
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 of the AD7739BRUZ at 4 kHz channel switching?
The conversion time is 250 μs at 4 kHz channel switching. - What types of digital interfaces are supported by the AD7739BRUZ?
The device supports 3-wire serial interfaces compatible with SPI, QSPI, MICROWIRE, and DSP. - Does the AD7739BRUZ have per channel system calibration options?
Yes, the AD7739BRUZ supports per channel system calibration options. - What is the package type of the AD7739BRUZ?
The package type is a 24-Lead TSSOP. - What are the typical applications of the AD7739BRUZ?
The typical applications include PLCs/DCSs, multiplexing applications, process control, and industrial instrumentation. - What is the analog input slew rate of the AD7739BRUZ?
The analog input slew rate is 0.5 V/conv. time for AIN absolute voltage > 3 V. - Does the AD7739BRUZ have a no-reference detect capability?
Yes, the differential reference input features a no-reference detect capability. - What are the supported digital supply voltages for the AD7739BRUZ?
The device supports 3 V or 5 V digital supply voltages.
