HJ2860 high-temperature resistant eight-channel eighteen-position AD acquisition system

HJ2860 is an 8-channel, 18-bit simultaneous acquisition A/D conversion system specifically designed for high-temperature (≥+200℃) applications. It consists of input clamping, second-order anti-aliasing analog filters, sample/hold circuits, an 18-bit charge redistribution successive approximation ADC, a programmable digital filter, a high-speed parallel interface, a precision reference source, a low-dropout regulator, an integrated system processor (ISP), and drivers. It can communicate with the host computer via SPI, UART, I2C, etc., allowing users to quickly acquire (up to 200ksps) and process the measured analog signals. It supports online non-intrusive programming; users can utilize the built-in 64kB flash to define and implement final functions and temperature modeling corrections. This circuit is particularly suitable for synchronous high-speed data acquisition systems in fields such as oil drilling rotary steering, inclinometers, inertial navigation control for aircraft, and multiphase motor control.

　　Product features include:

　　· Eight-channel synchronous acquisition, beneficial for collecting data from various sensors at the same moment and at the same coordinate point.

　　· Analog input voltage range ±5V, ±10V.

　　· Built-in half-duplex transceiver.

　　· Analog input clamping protection.

　　· Second-order anti-aliasing analog filter.

　　· Precision reference voltage.

　　· 18-bit, 200ksps ADC (all channels).

　　· Provides oversampling settings to improve sampling accuracy.

　　· Data acquisition process is programmable.

　　· Uses a parallel interface for data acquisition, improving the data sampling rate.

　　· Built-in 64kbit flash for easy zero/full-scale/temperature drift modeling correction by customers.

　　· SPI/UART/I2C compatible interface for easy external memory connection by customers.

　　· Built-in dual power drivers.

　　· Maximum temperature resistance ≥200℃.

　　· Low power consumption ≤150mW.

　　· Built-in single-ended to differential input stage.

　　· High input impedance ≥1MΩ.

　　· High signal-to-noise ratio (98dB SNR).

　　· Low distortion (-107dB THD).

　　· Dynamic range reaches up to105 dB.

　　. Channel-to-channel isolation ≥-85 dB.

　　. Single +5V power supply.

　　. Small size (40*21.6*5mm³).

• ad
• 内置
• 采集
• 数据
• 输入
• 模拟
• 通道
• 方便
• 进行
• 范围