AVI-F series I/F conversion module: high-precision, temperature compensated current/frequency conversion solution

In the field of precision measurement and control, high-precision current/frequency conversion technology is crucial. The AVI-F series I/F conversion module launched by Micro-Magic Inc has become an ideal choice for high-performance inertial navigation system accelerometer data acquisition, weak current signal digital acquisition and other

high demand scenarios due to its excellent performance and stable performance.

AVI-F is composed of voltage reference, constant current source, integrator, integrator arm, logic control CPLD, etc. The current signal of the accelerometer can be directly converted into pulse frequency, which is an analog/digital converter with high accuracy and good resolution. AVI-F adopts the principle of charge balance integration, which has the characteristics of signal acquisition without loss, and is less affected by noise such as power supply. It is an ideal circuit for building high-performance inertial navigation systems.

What are the core advantages of AVI-F series products?

1. High precision and stability

The AVI-F series module adopts a charge integration method, with a maximum output frequency of 256kHz, Zero offset as low as 10nA, and a comprehensive nonlinear error of only 20ppm, ensuring high accuracy and reliability of signal conversion. Its scale factor temperature coefficient is as low as 1ppm/℃, and it exhibits stability throughout the entire temperature range, suitable for harsh environments ranging from -45℃ to 70℃.

2. High standard hardware design

High performance components are used, mostly surface-mount devices (SMD), with small size and high precision. The board level uses precision constant current sources and high-precision multimeters for precision calibration, including symmetry and linearity.

3. Multi-functional output interface

The module supports three independent pulse outputs (X/Y/Z channels), each containing positive and negative current pulse signals. At the same time, an RS422 serial port function is added, which sends pulse accumulation at a frequency of 1KHz to simplify the data acquisition process and improve system integration efficiency.

4. Low power consumption and localized design

The power requirements are ±15V and +5V, with a steady-state current as low as 0.2A and excellent power consumption performance. All components are 100% domestically produced to ensure supply chain security and meet independent and controllable needs.

Typical Applications of AVI-F Series Product

a. Inertial navigation system: Accurately convert accelerometer signals to improve navigation accuracy.

b. Industrial automation: Real time monitoring of current signals and optimization of control processes.

c. Research instruments: high-resolution data acquisition to assist in precision experiments.

Why choose AVI-F module?

The AVI-F series I/F conversion module integrates high precision, low power consumption and multifunctionality, making it a wise choice for users who pursue performance and reliability. Whether in harsh environments or complex applications, it can provide stable and efficient solutions.

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