회사 블로그 Mingjiada Supply ADI AD4114 Multichannel 31.25 kSPS 24-Bit Sigma-Delta Analog-To-Digital Converter

Mingjiada Supply ADI AD4114 Multichannel 31.25 kSPS 24-Bit Sigma-Delta Analog-To-Digital Converter

In industrial automation, process control, instrumentation and precision data acquisition systems, high-precision, low-noise, multi-channel analogue input designs have always been a key focus for engineers. The AD4114, launched by ADI (Analog Devices), is a 31.25 kSPS, low-noise 24-bit analogue-to-digital converter (ADC) that integrates multiple inputs and true rail-to-rail buffers, simplifying analogue front-end design. It is suitable for industrial and instrumentation applications with high demands for accuracy and stability. Mingjiada Electronics has long supplied the AD4114 series of devices, providing a stable supply and professional order fulfilment support for R&D selection, sample verification and mass production procurement.

Product Overview
The AD4114 belongs to ADI’s high-precision Σ-Δ ADC product line, utilising a 24-bit resolution architecture with a maximum output data rate of 31.25 kSPS. The device supports 8 differential inputs or 16 single-ended inputs and integrates true rail-to-rail buffers, enabling direct connection to a variety of industrial-standard analogue signals and reducing the need for external operational amplifiers and signal conditioning circuits. Its low-noise characteristics help improve the system’s effective resolution, making it suitable for multi-channel, low-speed, high-precision data acquisition scenarios.
The AD4114 utilises an SPI-compatible serial interface, facilitating connection to mainstream MCUs, DSPs and FPGAs. The compact package is suitable for high-density PCB designs, whilst the wide temperature range meets the requirements of industrial-grade applications.

AD4114 Key Features
24-bit ADC with integrated AFE
Fast and flexible output rates: 1.25 SPS to 31.25 kSPS
Channel-scanning data rate of 6.21 kSPS per channel (settling time of 161 μs)
17.3 noise-free bits per channel at 1007 SPS
120 dB common-mode rejection ratio (CMRR) per channel at 50 Hz and 60 Hz at 20 SPS
±10 V inputs, 8 differential or 16 single-ended
VIN pin absolute maximum rating: ±65 V
Absolute input pin voltage up to ±20 V
Minimum impedance of 1 MΩ
0.07% TUE at 25°C
On-chip 2.5 V reference voltage source
Initial accuracy of ±0.12% at 25°C, with drift of ±5 ppm/°C (typical)
Internal or external clock
Power supply
AVDD = 3.0 V to 5.5 V
IOVDD = 2 V to 5.5 V
Total current consumption: AVDD + IOVDD (IDD) = 3.9 mA
Temperature range: −40°C to +105°C
3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK)
Compatible with SPI, QSPI, MICROWIRE and DSP

Typical applications for the AD4114:
Programmable Logic Controllers (PLCs)
Distributed Control System (DCS) modules
Instrumentation and measurement
Industrial process control and automation systems
Medical equipment and vital signs monitoring
Sensor signal conditioning and transmitter interfaces
Communications equipment and power supply monitoring
Automated Test Equipment (ATE)
Multi-channel low-noise measurement terminals

With its 24-bit low-noise performance, 31.25 kSPS output rate, multi-channel inputs, integrated true rail-to-rail buffers and SPI interface, the AD4114 is widely used in industrial control, instrumentation and precision data acquisition applications. Mingjiada Electronics has been active in the electronic components supply chain for many years, strictly ensuring genuine product quality. We respond swiftly to customer enquiries and order fulfilment requests, providing stable component solutions for clients in the industrial control, instrumentation, new energy and medical electronics sectors.

For further information on the [ADI] AD4114 low-noise 24-bit analogue-to-digital converter (ADC) or to enquire about sample prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for more supply details.
Tags: AD4114BCPZ, AD4114BCP, AD4114BC, AD4114