Overview
The AD7714ARS-5 is a high-performance, 24-bit sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed to serve as a complete analog front end for low-frequency measurement applications. It employs a sigma-delta conversion technique to achieve up to 24 bits of no missing codes performance, making it ideal for precision measurement systems. The AD7714ARS-5 operates from a single 5V supply and is available in a 28-lead shrink small outline package (SSOP).
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Resolution | 24 bits | - | No missing codes |
| Supply Voltage | 4.75 V to 5.25 V | V | - |
| Operating Temperature | -40°C to +85°C | °C | - |
| Input Channels | 5 (configurable as 3 fully differential or 5 pseudo-differential) | - | - |
| Programmable Gain | 1 to 128 | - | - |
| Interface | Three-wire serial (SPI, QSPI, MICROWIRE, DSP compatible) | - | - |
| Power Consumption | 350 μA (typical), 5 μA (power-down) | μA | - |
| Noise | < 150 nV rms | nV | - |
| Package | 28-lead SSOP | - | - |
Key Features
- Charge balancing ADC with up to 24 bits of no missing codes performance
- Five-channel programmable gain front end with gains from 1 to 128
- Configurable as three fully differential or five pseudo-differential inputs
- Differential reference input
- Low noise (<150 nV rms) and low current consumption (350 μA typical, 5 μA in power-down mode)
- Three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- Self-calibration, system calibration, and background calibration options
- Ability to read and write calibration coefficients
- Programmable low-pass filter with adjustable filter cutoffs
- CMOS construction for low power dissipation
Applications
- Portable industrial instruments
- Portable weigh scales
- Loop-powered systems
- Pressure transducers
- Smart, microcontroller- or DSP-based systems
Q & A
- What is the resolution of the AD7714ARS-5 ADC?
The AD7714ARS-5 has a resolution of up to 24 bits with no missing codes.
- What is the operating voltage range of the AD7714ARS-5?
The AD7714ARS-5 operates from a single supply voltage of 4.75 V to 5.25 V.
- How many input channels does the AD7714ARS-5 support?
The AD7714ARS-5 supports five input channels, which can be configured as three fully differential or five pseudo-differential inputs.
- What types of calibration does the AD7714ARS-5 support?
The AD7714ARS-5 supports self-calibration, system calibration, and background calibration.
- What is the typical power consumption of the AD7714ARS-5?
The typical power consumption is 350 μA, and it reduces to 5 μA in power-down mode.
- What interface does the AD7714ARS-5 use for communication?
The AD7714ARS-5 uses a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Can the AD7714ARS-5 be used in low-power applications?
Yes, the AD7714ARS-5 is designed for low-power applications with low current consumption and a power-down mode.
- What is the noise performance of the AD7714ARS-5?
The AD7714ARS-5 has a low noise performance of less than 150 nV rms.
- In what package is the AD7714ARS-5 available?
The AD7714ARS-5 is available in a 28-lead shrink small outline package (SSOP).
- What are some common applications of the AD7714ARS-5?
Common applications include portable industrial instruments, portable weigh scales, loop-powered systems, and pressure transducers.
