ADS8681 Analog-to-Digital Converter Module ADC Module 16-Bit 1MSPS High Speed Data Acquisition Board, Dual/Unipolar Input

Product Introduction:

The ADS8681 is a high-performance, single-channel, 16-bit Successive Approximation Register (SAR) ADC module. It integrates a precision SAR ADC core, an analog front-end (AFE) driver, ±20V overvoltage protection, and a stable 4.096V on-chip reference. Operating from a single +5V supply, it offers software-selectable unipolar and bipolar input ranges with high input impedance (≥1MΩ), delivering reliable 16-bit accuracy at 1 MSPS. With terminal block and SMA input options, this module is ideal for demanding applications such as sensor signal acquisition, data acquisition systems, semiconductor testing, and servo drive control.

Specifications:

• Chip Model: ADS8681

• Module Type: 16-bit Analog-to-Digital Converter (ADC)

• Power Supply: Single +5V DC

• Channels: 1 (Single Channel)

• Resolution: 16-bit

• Reference Voltage: Internal 4.096V

• Sampling Rate: 1 MSPS (maximum)

• Input Range: Software-selectable

  • Bipolar: ±2.56V, ±5.12V, ±6.144V, ±10.24V, ±12.288V

  • Unipolar: 0~5.12V, 0~6.144V, 0~10.24V, 0~12.288V

• Input Impedance: ≥1 MΩ

• Input Bandwidth: 15 kHz (small-signal)

• Communication: SPI interface, up to 66.67 Mbps

• Included Code Examples: For STM32 (STM32F103ZET6) & FPGA (EP4CE10F17)

• Protection: Reverse-connection power protection

• Input Type: Single-ended

• Input Interface: Terminal block or SMA connector

• Dimensions: 40mm x 33mm (L x W)