Overview
The AD7714YRU is a 24-bit sigma-delta analog-to-digital converter (ADC) produced by Analog Devices Inc. It is designed as a complete analog front end for low-frequency measurement applications. The device can accept low-level signals directly from transducers and outputs a serial digital word. It employs a sigma-delta conversion technique to achieve up to 24 bits of no missing codes performance. The AD7714YRU operates from a single supply voltage of either 3 V or 5 V and is available in a 24-lead TSSOP package.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 24 bits |
| Conversion Technique | Sigma-Delta |
| Input Channels | Five (three fully differential or five pseudo-differential) |
| Programmable Gain | 1 to 128 |
| Supply Voltage | 3 V or 5 V |
| Temperature Range | -40°C to +105°C |
| Current Consumption | 350 µA (typ) with power-down mode (5 µA typ) |
| Interface | Three-wire serial interface (SPI, QSPI, MICROWIRE, DSP compatible) |
| Package Type | 24-lead TSSOP |
| Sampling Rate | 19.2 kSPS |
| Power Dissipation | 7 mW |
Key Features
- Charge balancing ADC with no missing codes and low nonlinearity (0.0015%).
- Programmable gain front end with gains from 1 to 128.
- Three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- Low noise (<150 nV rms) and low current consumption.
- Power-down mode reducing standby power consumption to 15 µW typ.
- Self-calibration, system calibration, and background calibration options.
- Ability to read and write calibration coefficients.
- Schmitt trigger on SCLK and DIN inputs.
- Programmable filter cutoffs and settling time.
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 AD7714YRU ADC?
The AD7714YRU has a resolution of 24 bits.
- What are the input channel configurations of the AD7714YRU?
The AD7714YRU can be configured as three fully differential inputs or five pseudo-differential inputs.
- What is the programmable gain range of the AD7714YRU?
The programmable gain range is from 1 to 128.
- What are the supply voltage options for the AD7714YRU?
The AD7714YRU operates from either 3 V or 5 V supply voltage.
- What is the temperature range of the AD7714YRU?
The temperature range is -40°C to +105°C.
- How much current does the AD7714YRU consume?
The AD7714YRU consumes 350 µA (typ) with a power-down mode of 5 µA (typ).
- What type of interface does the AD7714YRU use?
The AD7714YRU uses a three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP.
- What is the package type of the AD7714YRU?
The AD7714YRU is available in a 24-lead TSSOP package.
- What are some of the key applications of the AD7714YRU?
Key applications include portable industrial instruments, portable weigh scales, loop-powered systems, and pressure transducers.
- Does the AD7714YRU support calibration options?
Yes, the AD7714YRU supports self-calibration, system calibration, and background calibration options).
