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High Precision Current to Frequency Converter ±42mA 256kHz Output RS422 Serial Pulse Interface 3-Axis Accelerometer Signal Module

High Precision Current to Frequency Converter ±42mA 256kHz Output RS422 Serial Pulse Interface 3-Axis Accelerometer Signal Module

The AVI-F-series I/F conversion module is a temperature compensated high-precision current/frequency converter, which adopts a charge integration method and can continuously convert the current signals of three accelerometers simultaneously. The output of the I/F converter includes a pulse output mode, and also adds the function of timing the serial port 422 to send the accumulated number of pulses. The components used in this series of products are all 100% domestically produced, with a range of up to ±42mA.

  • Part No, :

    AVI-F
  • Order(MOQ) :

    1
  • Description

Product Series and Parameters

Specification  Test conditions  Minimum  Typical  Maximum  Unit 
Maximum output frequency  Full temperature 256 kHz 
Zero position F0  Full temperature 0 - 10 nA
Zero stability  Full temperature  - - 5 ppm 
Scale factor temperature coefficient  Full temperature - 1 ppm/℃ 
Scale factor asymmetry  I=±1mA,TC =25℃  0 10 20 ppm
Scale factor comprehensive nonlinearity  Full temperature range 1mA ≤ | I | ≤ FS  15 20 ppm 
Small signal error 0.01uA≤|I|≤1mA - - 0.2 Hz
Stability during one power on  I=±1mA,TC =25℃ - 3 5 ppm 
Repeatability of successive power on I=±1mA,TC =25℃ - 5 7 ppm 
Working temperature range TC    -45   70
Product dimension 108*60*15 mm 
Interface form  J30JZ/LN51ZKWA000

Production process


Product dimension

AVI-F


Application Scenarios

V/F board application
The V/F (Voltage-to-Frequency) board is designed for robust signal conditioning and digitization in industrial sensing and control systems—ideal for precision sensor readout, long-cable transmission, PLC/MCU acquisition, and harsh-environment monitoring applications. It converts low-level analog voltage signals into a frequency output with strong noise immunity, supporting stable performance over temperature, wide input compatibility, compact board-level integration, and simple wiring/installation for fast system deployment.
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UAV
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FAQ

Q1: What are the main functions of this product?
A:The AVI-F series is a high-precision, temperature-compensated current-to-frequency (I/F) converter module that simultaneously and continuously converts current signals from tri-axis accelerometers into frequency signals. In addition to pulse output, it also supports an RS422 serial interface and can output accumulated pulse counts, facilitating integration into digital systems.

Q2: What is the input current range?
A:Input range: ±42mA
Supports high-precision scale factor adjustment, suitable for a variety of sensor applications.
 
Q3: What are the power supply requirements?
A:VCC = +15V ±3% (steady state ≤0.20A)
VEE = -15V ±3% (steady state ≤0.20A)
VDD = +5V ±3% (steady state ≤0.10A)
Industrial-grade stability and low power consumption are provided.
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The AVI-F-series I/F conversion module is a temperature compensated high-precision current/frequency converter, which adopts a charge integration method and can continuously convert the current signals of three accelerometers simultaneously. The output of the I/F converter includes a pulse output mode, and also adds the function of timing the serial port 422 to send the accumulated number of pulses. The components used in this series of products are all 100% domestically produced, with a range of up to ±42mA.
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