EVAL-AD7173-8ARDZ User Guide: Evaluating the AD7173-8 24-Bit Sigma-Delta ADC
Evaluation board user guide for the AD7173-8 24-bit sigma-delta ADC. Supports PC control via SDP-K1 and ACE software for performance analysis and hardware configuration.
Overview
The EVAL-AD7173-8ARDZ is a comprehensive evaluation board for the AD7173-8, a 24-bit, 8-/16-channel, 31.25kSPS sigma-delta analog-to-digital converter (ADC) featuring integrated rail-to-rail buffers. The board provides on-board power regulation, converting a 5V USB input into 5V and 3.3V rails to support the ADC and auxiliary components. It connects to a PC through the System Demonstration Platform (SDP-K1) via Arduino-compatible headers. The accompanying ACE software enables full device configuration via a register interface and provides tools for DC time-domain analysis, including waveform graphs and noise performance histograms. The hardware includes an external amplifier section for driver evaluation (ADA4945-1/ADA4940-1) and multiple LDO regulators (ADP7118, LT1962, ADP150) for flexible power rail management.
Use Cases
- High-resolution ADC performance evaluation
- Precision sensor signal conditioning prototyping
- System demonstration using SDP-K1 controller
- Noise analysis for sigma-delta converters
- ADC driver amplifier evaluation
Topics
Referenced Parts
Analog Devices
The EVAL-AD7173-8ARDZ evaluation board features the AD7173-8, a 24-bit, 250kSPS analog-to-digital converter (ADC)
Analog Devices
The external reference on the EVAL-AD7173-8ARDZ is set to 2.5V by using the ADR4525
Analog Devices
Turns on the LTC3129 (U3) to supply 7V to the low-dropout (LDO) linear regulators
| ADP150ACBZ-3.3-R7 | Analog Devices | +3.3V Regulator ADP150ACBZ-3.3-R7 LK13 |
| ADP7118ACPZN5.0-R7 | Analog Devices | +5V Regulator ADP7118ACPZN5.0-R7 LK9 |
| ADP7182AUJZ-2.5-R7 | Analog Devices | −2.5V Regulator ADP7182AUJZ-2.5-R7 LK12 |
| LT1962EMS8-2.5#PBF | Analog Devices | +2.5V Regulator LT1962EMS8-2.5#PBF LK10 |
| AD7173-8 | Analog Devices | The EVAL-AD7173-8ARDZ evaluation board features the AD7173-8, a 24-bit, 250kSPS analog-to-digital converter (ADC) |
| ADA4940-1 | Analog Devices | initiates power down for the ADA4945-1/ADA4940-1 |
| ADA4945-1 | Analog Devices | initiates power down for the ADA4945-1/ADA4940-1 |
| ADP7118 | Analog Devices | Turns on the ADP7118 (U10) to supply for AVDD 5.5V |
| ADR4525 | Analog Devices | The external reference on the EVAL-AD7173-8ARDZ is set to 2.5V by using the ADR4525 |
| ADR4550 | Analog Devices | The default ADR4550 on-board external reference |
| LTC1983 | Analog Devices | Turns on the LTC1983 (U2) to supply for the ADP7182 (U5) 2.5V linear regulator |
| LTC3129 | Analog Devices | Turns on the LTC3129 (U3) to supply 7V to the low-dropout (LDO) linear regulators |