Overview
The MAX71071+ is a dual-channel isolated metrology analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is designed to work in conjunction with a compatible MAX71xxx host, providing accurate current and voltage measurements. The MAX71071+ features galvanic isolation through a pulse transformer, which eliminates the need for additional isolation components in the measurement subsystem. It operates over the industrial temperature range and is packaged in a compact 10-pin μMAX® or MSOP package.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Number of Bits | 24 | - | ||
| Number of Inputs | 2 | - | ||
| Input Type | Differential | - | ||
| Operating Temperature | -40°C | - | 85°C | °C |
| Supply Current | - | 1.4mA | - | mA |
| Accuracy Over Dynamic Range | - | 0.1% | - | % |
| Dynamic Range | - | 2000:1 | - | - |
| Package/Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | - | ||
Key Features
- Dual 24-bit ADCs for accurate voltage and current measurements.
- Galvanic isolation through a pulse transformer, providing power, bidirectional data, and timing reference.
- Exceeds IEC 62053/ANSI C12.20 standards for metrology applications.
- On-chip temperature sensor enables localized digital temperature compensation.
- Compatible with shunt resistors as low as 50µΩ.
- Powered from the MAX71xxx host using pulses sent through the transformer.
- On-chip power monitoring and industrial temperature range operation.
- Compact 10-pin μMAX® or MSOP package.
Applications
- Industrial energy meters.
- Residential energy meters.
- Smart grid monitoring.
Q & A
- What is the MAX71071+ used for?
The MAX71071+ is used for accurate current and voltage measurements in metrology applications, working in conjunction with a compatible MAX71xxx host.
- What type of isolation does the MAX71071+ provide?
The MAX71071+ provides galvanic isolation through a pulse transformer.
- What is the accuracy of the MAX71071+ over its dynamic range?
The MAX71071+ has an accuracy of 0.1% over a 2000:1 dynamic range.
- What standards does the MAX71071+ exceed?
The MAX71071+ exceeds IEC 62053/ANSI C12.20 standards.
- Does the MAX71071+ have an on-chip temperature sensor?
Yes, the MAX71071+ includes an on-chip temperature sensor for localized digital temperature compensation.
- How is the MAX71071+ powered?
The MAX71071+ is powered from the MAX71xxx host using pulses sent through the transformer.
- What is the typical supply current of the MAX71071+?
The typical supply current of the MAX71071+ is 1.4mA.
- What is the operating temperature range of the MAX71071+?
The operating temperature range of the MAX71071+ is -40°C to 85°C.
- In what package is the MAX71071+ available?
The MAX71071+ is available in a 10-pin μMAX® or MSOP package.
- What are some common applications of the MAX71071+?
Common applications include industrial energy meters, residential energy meters, and smart grid monitoring.
