Le blog de l'entreprise Mingjiada Supply ADI AD7891 Series 12-Bit High Speed Data Acquisition System

Mingjiada Supply ADI AD7891 Series 12-Bit High Speed Data Acquisition System

In industrial automation, power monitoring, instrumentation and multi-channel data acquisition systems, a key concern for design engineers is how to achieve fast, high-precision acquisition of multiple analogue signals within limited board space. ADI’s AD7891 is a high-speed data acquisition system (DAS) that integrates an 8-channel multiplexer, a 12-bit ADC, a reference voltage source and a parallel interface. Mingjiada Electronics has long supplied the AD7891 series; our stock consists of genuine, original products with ample availability to meet the needs of R&D prototyping, small-batch trial production and large-scale mass production.

The AD7891 is an LC2MOS 8-channel, 12-bit high-speed data acquisition system launched by ADI. It integrates the analogue front-end and digital control onto a single chip, incorporating an 8-channel multiplexer, track-and-hold amplifiers, a 12-bit successive approximation ADC, a +2.5 V reference voltage and a parallel interface. Compared to discrete solutions, the AD7891 significantly simplifies the design of multi-channel acquisition circuits, reduces the number of external components and enhances system reliability.

Key features of the AD7891:
8 single-ended input channels, configurable as 4 differential input channels
12-bit resolution, high-speed successive approximation ADC
Throughput: 500 kSPS
Conversion time: 1.6 µs
Input range:
AD7891-1: ±10 V, ±5 V
AD7891-2: 0 to +5 V, 0 to +10 V
+5 V single-supply operation
On-chip +2.5 V reference voltage
Parallel 12-bit interface for easy connection to MCUs and DSPs
44-pin MQFP / PLCC package
Low-power design, suitable for industrial applications

Differences between the AD7891-1 and AD7891-2:
AD7891-1 — ±10 V, ±5 V, bipolar signals
AD7891-2 — 0 to +5 V, 0 to +10 V, unipolar signals
Both versions retain the core performance specifications of 8 channels, 12 bits and 500 kSPS; users may select the appropriate version based on the output range of their front-end sensors or signal conditioning circuits.
Models available from Mingjiada Electronics (selection):
AD7891BPZ-1
AD7891BSZ-1
AD7891YSZ-1
AD7891BSZ-2
AD7891YSZ-2
AD7891APZ-2

Typical application areas:
Industrial process control and PLC analogue inputs
Multi-channel data acquisition systems
Power monitoring and power quality analysis
Instrumentation and automated test equipment
Medical monitoring and physiological signal acquisition
Motor control and vibration monitoring
Remote sensor interfaces and distributed data acquisition

With its combination of 8 channels, 12-bit resolution and 500 kSPS, the AD7891 provides a highly integrated, easy-to-design solution for multi-channel high-speed data acquisition systems. With the continued growth in demand for industrial automation and data acquisition, the AD7891 series remains a reliable choice for many designs. Mingjiada Electronics will continue to provide customers with a stable supply of ADI data acquisition devices and supporting services.

To obtain the ADI AD7891 datasheet, quotation, samples or alternative selection recommendations, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.