ADS8686SIPZAR

ADS8686S is a 16-channel data acquisition (DAQ) system based on a dual simultaneous sampling 16-bit successive approximation register (SAR) ADC. Each channel of the ADS8686S features a complete analog front end, including input clamping, 1MΩ input impedance, an independent programmable gain amplifier (PGA), a programmable low-pass filter, and an ADC input driver. The device also integrates a low-drift, high-precision voltage reference and a buffer for driving the ADC. With a flexible digital interface supporting serial, parallel, and byte communication, the device is compatible with a wide range of host controllers. The ADS8686S can be configured to accept ±10V, ±5V, or ±2.5V bipolar inputs and provides a 20% over-range option using a single 5V supply. The high input impedance enables direct connection to sensors and transformers, eliminating the need for external driver circuitry. The ADS8686S features a highly configurable channel sequencer that reduces sequencing overhead on the back-end controller or processor. With high performance, high accuracy, and zero-latency conversion, the ADS8686S is an ideal choice for a wide range of industrial applications.

Applications

• Multi-function relay
• Servo driver position sensor
• Analog input module
• Data acquisition (DAQ)

Key features

• 16-channel, 16-bit ADC with integrated analog front-end
• Dual simultaneous sampling: 8×2 channels
• Power supply:
• Analog: 5V
• Digital: 1.8V to 5V
• Constant 1MΩ input impedance front-end
• Independent programmable input ranges with 20% overrange
• Programmable low-pass filter: 15kHz, 39kHz, 376kHz
• Excellent DC and AC performance
• On-chip reference and reference buffer
• Excellent overtemperature protection
• Overvoltage input clamp with 8kV ESD
• Optional CRC error checking
• On-chip self-diagnostics
• Temperature range: –40°C to +125°C