Purpose

1.1 Purpose

The ADS5102/3 EVM provides a platform for evaluating the ADS5102/3 analog-to-digital converter (ADC) under various signal, reference, and supply conditions. Use this document in combination with the EVM schematic diagram supplied.

1.2 EVM Basic Functions

Analog input to the ADC is provided via two external SMA connectors. The single-ended input the user provides is converted into a differential signal at the input of the device. One input uses a differential amplifier, while the other input is transformer coupled.

The EVM provides an external SMA connection for input of the ADC clock. The user can send this clock to the output connector with the digital data or provide a second clock source to be sent in place of the ADC clock. This allows the user to provide the required setup and hold times of the output data with respect to the output clock. See the Clock Inputs section for the proper configuration and operation.

Digital output from the EVM is via a 40-pin connector. The digital lines from the ADC are buffered before going to this connector. More information on this connector can be found in the ADC output section.

Power connections to the EVM are via banana jack sockets. Separate sockets are provided for the analog and digital supply.

In addition to the internal reference provided by the ADS5102/3 device, options are provided on the EVM to allow adjustment of the ADC references via an onboard reference circuit. A precision voltage reference source, a resistor network, and an operational amplifier (op amp) provide the ADS5102/3 device reference voltages REFT and REFB.

1.3 Power Requirements

The EVM can be powered directly with a single 1.8-V supply if using the module with transformer coupled input, internal reference source, and 1.8-V logic outputs.

A voltage of 3.3 V is required for the DRVDD power input to provide 3.3-V logic outputs. A voltage of ± 5 V is required if using external references and/or differential amplifier input. Provision has also been made to allow the EVM to be powered with independent 1.8-V analog and digital supplies to provide higher performance.

Voltage Limits

Exceeding the maximum input voltages can damage EVM components. Undervoltage may cause improper operation of some or all of the EVM components.

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Texas Instruments ADS5102 EVM, ADS5103 EVM manual Purpose, EVM Basic Functions, Power Requirements
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ADS5103 EVM, ADS5102 EVM specifications

Texas Instruments is known for its innovation in analog and embedded processing technologies, and the ADS5102 and ADS5103 Evaluation Modules (EVM) exemplify this legacy. These high-performance data converters are designed to meet the needs of a wide range of applications in industrial, medical, and communication systems.

The ADS5102 and ADS5103 EVMs are equipped with high-speed analog-to-digital converters (ADCs) that boast impressive specifications. The ADS5102 features a 12-bit resolution, while the ADS5103 pushes boundaries further with 14-bit resolution, ensuring exceptional accuracy in signal conversion. Operating at a sampling rate of up to 250 MSPS, both modules enable the processing of high-frequency signals with minimal latency. This makes them ideal for applications that require real-time data acquisition and processing.

A standout feature of both EVMs is their Error Vector Magnitude (EVM) performance, which allows for low distortion and high linearity in signal processing. This characteristic is critical for applications such as communications, where signal integrity is paramount. The combination of high bit resolution and low EVM makes these devices a natural choice for advanced systems requiring clear and accurate signal representation.

Technology-wise, the EVMs utilize a high-speed deserializer for efficient transmission of data. This feature supports advanced communication protocols, enabling seamless integration with digital signal processors (DSPs) or FPGAs. The design includes flexible input options, allowing users to connect various analog sources and easily adapt the systems to different use cases.

The ADS5102 and ADS5103 EVMs also provide comprehensive software support, including TI’s high-performance software libraries. This enables users to quickly set up their evaluation environment and perform thorough testing and analysis. In addition, the modular design of the EVMs allows for easy upgrades and modifications, making them versatile tools for engineers.

In summary, the Texas Instruments ADS5102 and ADS5103 EVMs are powerful evaluation tools for high-speed, high-resolution data conversion. With their exceptional sampling rates, low distortion, and user-friendly design, they serve as vital components in the development of advanced signal processing systems across various industries. These EVMs not only demonstrate Texas Instruments' commitment to quality and innovation but also provide engineers with the essential tools needed to drive their designs forward.
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