Overview
The AD7714AN-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 direct connection to transducers and offers high precision and flexibility. It operates on a single supply voltage of 5 V and is suitable for use in various industrial and portable instruments.
Key Specifications
| Parameter | Value | Units | Conditions/Comments |
|---|---|---|---|
| Resolution | 24 Bits | - | No missing codes |
| Supply Voltage | 5 V | V | - |
| Operating Temperature | -40°C to +85°C | °C | - |
| Input Channels | 5 | - | Configurable as 3 fully differential or 5 pseudo-differential inputs |
| Programmable Gain | 1 to 128 | - | - |
| Nonlinearity | 0.0015% | % | - |
| Noise | <150 nV rms | nV | - |
| Current Consumption | 350 μA typ (active), 5 μA typ (power-down) | μA | - |
| Package Type | 24-pin DIP, 24-lead SOIC, 28-lead SSOP | - | - |
Key Features
- Charge balancing ADC with sigma-delta conversion technique
- Programmable gain front end with gains from 1 to 128
- Three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP
- Low noise and low current consumption with power-down mode
- Self-calibration, system calibration, and background calibration options
- Ability to read and write calibration coefficients
- Low-pass filter with programmable filter cutoffs
- Schmitt trigger on SCLK and DIN for improved noise immunity
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 AD7714AN-5?
The AD7714AN-5 has a resolution of 24 bits with no missing codes. - What are the operating voltage and temperature ranges of the AD7714AN-5?
The AD7714AN-5 operates on a single 5 V supply and has an operating temperature range of -40°C to +85°C. - How many input channels does the AD7714AN-5 have?
The AD7714AN-5 has five input channels, which can be configured as three fully differential or five pseudo-differential inputs. - What is the programmable gain range of the AD7714AN-5?
The programmable gain range of the AD7714AN-5 is from 1 to 128. - What is the noise performance of the AD7714AN-5?
The AD7714AN-5 has a noise performance of less than 150 nV rms. - What are the current consumption characteristics of the AD7714AN-5?
The AD7714AN-5 consumes 350 μA typically in active mode and 5 μA typically in power-down mode. - What types of calibration does the AD7714AN-5 support?
The AD7714AN-5 supports self-calibration, system calibration, and background calibration. - Can the AD7714AN-5 be used in microcontroller- or DSP-based systems?
Yes, the AD7714AN-5 is ideal for use in smart, microcontroller- or DSP-based systems due to its serial interface compatibility. - What package types are available for the AD7714AN-5?
The AD7714AN-5 is available in 24-pin DIP, 24-lead SOIC, and 28-lead SSOP packages. - Does the AD7714AN-5 have a low-pass filter?
Yes, the AD7714AN-5 includes a low-pass filter with programmable filter cutoffs.
