ADS8167IRHBR

The ADS816x is a series of 16-bit, 8-channel, high-precision successive approximation register (SAR) analog-to-digital converters (ADCs). The device is powered by a single 5V supply and has a total throughput of 500 kSPS (ADS8168) and 250 kSPS (ADS8166). The input multiplexer supports a longer settling time, which makes it easier to drive the analog inputs. The outputs of the multiplexer and the ADC analog inputs are available as device pins. This configuration allows a single ADC driver op-amp to be used for all eight analog inputs of the multiplexer. The ADS816x features a digital window comparator with programmable high and low alarm thresholds for each analog input channel. A single op-amp solution with programmable alarm thresholds enables low-power, low-cost applications with a minimal form factor.

Applications

• Analog input modules
• Multi-parameter patient monitors
• Anesthesia delivery systems
• LCD testing
• Data center intra-connect (metro)
• Optical modules

Key features

• Compact, low-power data acquisition system
• Multiplexer output pin supports single external driver amplifier
• 16-bit SAR ADC
• Low-drift integrated reference and buffer
• 0.5×VREF output for analog input DC bias
• Excellent AC and DC performance
• SNR: 92dB, THD: –110dB
• INL: ±0.3LSB, 16-bit, no missing codes
• Multiplexer with channel sequencer
• Multi-channel sequencing options: manual mode, dynamic mode, auto-sequence mode, custom channel sequencing
• Early switch for direct sensor interface
• Dynamic mode for reduced response time
• System monitoring functionality
• Per-channel programmable window comparator
• Programmable hysteresis to avoid false triggering
• Enhanced SPI digital interface
• 1MSPS throughput at 16MHz SCLK
• 70MHz high-speed digital interface
• Wide operating range
• External VREF input range: 2.5V to 5V
• AVDD range: 3V to 5.5V
• DVDD range: 1.65V to 5.5V
• Temperature range: -40°C to +125°C