Overview
The AD7714ARZ-5, produced by Analog Devices Inc., is a comprehensive analog front end designed for low-frequency measurement applications. This 24-bit sigma-delta analog-to-digital converter (ADC) is optimized for high precision and low power consumption. It features a programmable gain front end, allowing it to accept low-level signals directly from transducers and output a serial digital word. The device is suitable for use in smart, microcontroller- or DSP-based systems due to its versatile serial interface and low power dissipation characteristics.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Nonlinearity | 0.0015% (typical) |
| Input Configuration | Three differential or five pseudo-differential inputs |
| Programmable Gain | 1 to 128 |
| Operating Voltage | +4.75 V to +5.25 V (AD7714-5), +2.7 V to +3.3 V (AD7714-3) |
| Current Consumption | 350 µA (typical), 5 µA (power-down mode) |
| Temperature Range | -40°C to +105°C |
| Serial Interface | SPI, QSPI, MICROWIRE, and DSP compatible |
| Package | 24-Lead SOIC (Wide), PDIP, SSOP, TSSOP |
| Noise | < 150 nV rms |
Key Features
- Charge balancing ADC with no missing codes
- Programmable gain front end with gains from 1 to 128
- Three differential or five pseudo-differential analog inputs
- Differential reference input
- Low noise and low current consumption
- Power-down mode with low standby power consumption (15 µW typical at 3 V)
- Self-calibration, system calibration, and background calibration options
- Ability to read and write on-chip calibration registers
- Schmitt trigger inputs on SCLK and DIN (Y grade)
- Low power dissipation due to CMOS construction
Applications
- Portable industrial instruments
- Portable weigh scales
- Loop-powered systems
- Pressure transducers
Q & A
- What is the resolution of the AD7714ARZ-5?
The AD7714ARZ-5 has a resolution of 24 bits.
- What are the input configurations available for the AD7714ARZ-5?
The device can be configured as three differential or five pseudo-differential analog inputs.
- What is the operating voltage range for the AD7714ARZ-5?
The operating voltage range is +4.75 V to +5.25 V for the 5V version and +2.7 V to +3.3 V for the 3V version.
- What is the typical current consumption of the AD7714ARZ-5?
The typical current consumption is 350 µA, with a power-down mode consumption of 5 µA.
- What types of calibration are supported by the AD7714ARZ-5?
The device supports self-calibration, system calibration, and background calibration.
- Can the AD7714ARZ-5 be used in high-temperature environments?
Yes, it operates over a temperature range of -40°C to +105°C.
- What serial interfaces are supported by the AD7714ARZ-5?
The device supports SPI, QSPI, MICROWIRE, and DSP compatible serial interfaces.
- What are the available package options for the AD7714ARZ-5?
The device is available in 24-Lead SOIC (Wide), PDIP, SSOP, and TSSOP packages.
- How does the AD7714ARZ-5 manage noise?
The device has low noise characteristics, with less than 150 nV rms noise.
- Is the AD7714ARZ-5 suitable for low power applications?
Yes, it is designed for low power consumption, with CMOS construction ensuring very low power dissipation.
