EVAL-ADuM7801
Overview
Features and Benefits
- Simplified evaluation of the ADuM7801 isolated ADC with Σ-Δ modulated bit stream output
- Footprint for 6mm × 10mm, 8-lead SOIC_IC package with >8.0mm creepage and clearance
- On-board power supplies
- On-board ADuM6028-5 ISO DC-DC converter and ADP7142 low noise CMOS LDO regulator with jumper options for simplified evaluation in multiple supply configurations
- SMA connectors for MDAT output signal, MCLK input, and VIN+, VIN− analog input signals
- Resistors and footprints for termination
- Test points for measuring all signals
- Standalone capability
- ZedBoard™ controller board compatible
- PC-based software for control and data analysis
Product Details
The EV-ADuM7801-8FMCZ is a fully-featured evaluation board that allows the user to evaluate all features of the ADuM7801 isolated ADC with Σ-Δ modulated bit stream output. The ZedBoard Zynq-7000 controller board controls the EV-ADuM7801-8FMCZ by the J9 connector and through the USB port of a PC using the ACE Software. The ACE Software is available to download on the ACE Software page.
On-board components include an isolated, 5kV, isoPower® DC-to- DC converter (the ADuM6028-5), a 5V, low noise, low dropout (LDO) regulator (the ADP7104), and a 200mA, 40V, low noise, LDO regulator (the ADP7142).
This user guide explains how to use the EV-ADuM7801-8FMCZ to evaluate the ADuM7801. The ADuM7801 is a high-performance isolated analog-to-digital converter (ADC) with a second-order Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology. The device operates from a 4.0V to 5.5V power supply range (high-side supply voltage, VDD1) and accepts a pseudodifferential input signal of ±250mV (±320mV full-scale). The pseudodifferential input is ideally suited for shunt-resistor current monitoring in high voltage applications where galvanic isolation is required.
The analog input is continuously sampled by a high-performance analog modulator and converted to a pulse density modulation digital output stream with a data rate of up to 25MHz. The analog input can be reconstructed with an appropriate sinc3 digital filter to achieve an 88dB signal-to-noise ratio (SNR) at 97.6kSPS with a 256 decimation rate and a 25MHz input clock. The serial input and output operates from a 3V to a 5.5V supply (controller-side supply voltage, VDD2).
The serial interface is digitally isolated. The on-chip isolation provides performance characteristics superior to alternatives, such as optocoupler devices, due to high speed CMOS technology combined with monolithic transformer technology. The ADuM7801
Full specifications on the ADuM7801 are available in the ADuM7801 has an operating temperature range of −40°C to +125°C.
data sheet available from Analog Devices, Inc., and must be consulted with this user guide when using the EV-ADuM7801- 8FMCZ evaluation board.
Applicable Parts
Getting Started
EQUIPMENT NEEDED
- Oscilloscope
- Signal generator
- Power supply
- ZedBoard Zynq-7000 development board (optional)
- USB cable (provided in ZedBoard kit)
- 24V wall wart signal source (provided in ZedBoard kit)
- 16GB (or larger) Class 10 (or faster) micro-SD card
- PC running Windows® Vista SP2 (32-bit or 64-bit), Windows 7 SP1 (32-bit or 64-bit), Windows 8.1 (32-bit or 64-bit), Windows 10 (32-bit or 64-bit), or Windows 11 (32-bit or 64-bit) with a USB 2.0 port