LT3040

• Allows prototyping of intelligent, secure, and connected industrial field devices
• Arduino Mega-compatible form factor
• Two Pmod™-compatible connectors
• ARM Cortex-M4 Ultra Efficient Microcontroller with integrated Bluetooth 5.2 LE
• WiFi connectivity
• Long-range, single-pair 10BASE-T1L Ethernet interface
• Built-in security for root-of-trust, mutual authentication, data confidentiality and integrity, secure boot, and secure communications
• Open-source software stack

The AD-APARD32690-SL is a platform for prototyping intelligent, secure, and connected field devices. It has an Arduino Mega-compatible form factor and two Pmod™-compatible connectors.

The system includes the MAX32690 ARM Cortex-M4 with FPU-Based Microcontroller and Bluetooth LE 5.2. The MCU is coupled with external RAM (2 x 512 Mb) and Flash (64 Mb) memories to meet the requirements of the most demanding applications. The MAXQ1065 security coprocessor enables state of the art security features such as for root-of-trust, mutual authentication, data confidentiality and integrity, secure boot, and secure communications.

A 10 Mbps single-pair Ethernet link using the ADIN1110 10BASE-T1L MAC/PHY, enables remote data acquisition and system configuration. The 10BASE-T1L interface also supports Single-pair Power over Ethernet (SPoE) and be used for powering the system via an Arduino shield implementing the required power circuitry.

WiFi connectivity is provided via the on-board NINA-W102 multiradio wireless MCU module with internal antenna.

Power can be supplied either via the USB-C connector or via a 2-pin terminal block. The supported input voltage range is 5 V to 28 V.

The system is accompanied by an open-source software stack and associated collateral, enabling a complete experience from evaluation, and prototyping, all the way to production firmware and application development. The open-source software stack also includes drivers and example applications for a wide variety of ADCs, DACs, sensors, and other devices commonly used in industrial applications, further accelerating the development process. An external programmer such as the MAX32625PICO DAPLink, or any other similar programmer supporting the SWD interface, enables firmware programming and debug. The system’s firmware is based on Analog Devices’ open-source no-OS framework which includes all the tools required for embedded code development and debugging as well as libraries, enabling host-side connectivity for system configuration and data transfer over the UART, USB, WiFi, and 10BASE-T1L interfaces.

APPLICATIONS

• Factory automation
• Process control
• Intelligent buildings
• Secure field instruments
• Internet of Things

演示板DC2783A具有LT3040，这是个200mA的高性能、强大的基准电压/ DAC缓冲器。LT3040具有超低的输出噪声、超高的电源电压抑制比(PSRR)和低压差，可为噪声敏感的高精度系统供电。

DC2783A 具有两个输入：V+ 和 V_IN.V +为缓冲器供电，工作电压范围为 2V 至 20V。V_IN 是输出的调节设定点，范围为 0V 至 15V。通过在 ILIM 和 GND 之间连接一个电阻 R3，可以对限流值进行编程。ILIM 还可以用作电流监控器引脚，范围为 0V 至 300mV。

LT3040具有快速启动能力。将FS引脚连接到输入低通滤波器电阻R2两端，以快速启动LT3040。快速启动电路通常在以下情况下触发激活：如果 V_FS − V_IN ≥ 100mV，并保持激活状态，直到 V_FS – V_IN ≤ 7mV。如果不需要快速启动功能，则通过将R2设置为0Ω并在FS上施加此输入电压，将FS连接到 V_IN。

LT3040具有一个故障标志，指示输出故障。内置保护功能包括电池反接保护、反向电流保护、具有折返功能的内部限流以及带迟滞的热限制。

LT3040数据手册提供了完整的器件、运行和应用说明。应同时阅读数据手册和演示电路DC2783A的演示手册。LT3040采用12引脚MSOP和10引脚(3mm x 3mm)塑料DFN封装，IC底部带有裸露焊盘。为实现较大散热性能，适当设计电路板布局至关重要。