Texas Instruments TLC3578EVM manual Physical Pinout Description, Reference Voltage

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Physical Pinout Description

2.4 Physical Pinout Description

Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin dual row header/socket combination at P1. This header/socket provides access to the analog input pins of the TLV2553/6.

Consult Samtec at www.samtec.com or 1− 800− SAMTEC− 9 for a variety of mating connector options.

Table 2− 1. Analog Input Pinout Description

Pin Number

Signal

Description

 

 

Header

Socket

 

 

 

 

 

 

P1.2

J1.2

CH0

Channel 0 input, can be direct from P1/J1 connector or through Op-Amp

 

 

 

 

P1.4

J1.4

CH1

Channel 1 input, direct from P1/J1 connector

 

 

 

 

P1.6

J1.6

CH2

Channel 2 input, direct from P1/J1 connector

 

 

 

 

P1.8

J1.8

CH3

Channel 3 input, direct from P1/J1 connector

 

 

 

 

P1.10

J1.10

CH4

Channel 4 input, direct from P1/J1 connector

 

 

 

 

P1.12

J1.12

CH5

Channel 5 input, direct from P1/J1 connector

 

 

 

 

P1.14

J1.14

CH6

Channel 6 input, direct from P1/J1 connector

 

 

 

 

P1.16

J1.16

CH7

Channel 7 input, direct from P1/J1 connector

 

 

 

 

P1.18

J1.18

REF−

External Reference negative input

 

 

 

 

P1.20

J1.20

REF+

External Reference positive input

2.5 Reference Voltage

The accuracy of conversion from a SAR ADC depends directly upon the accuracy of the reference voltage. It is very important, therefore, that the reference be stable, accurate and low drift.

The ADC reference pin presents a dynamic capacitive load to the amplifier. The voltage supplied to the ADC must be capable of driving this dynamic load properly, ensuring that the reference remain stable regardless of load.

The bipolar and unipolar devices are specified to use a different voltage for the reference pin.

Table 2− 2. ADC Reference Voltage

ADC

Reference Voltage

 

 

Bipolar input

 

 

 

TLC3578

3.3 V

 

 

TLC3574

3.3 V

 

 

TLC2578

3.3 V

 

 

TLC2574

3.3 V

 

 

Unipolar input

 

 

 

TLC3548

4.096 V

 

 

TLC3544

4.096 V

Analog Interface

2-3

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions About This Manual Read This FirstTrademarks Contents Tables FiguresEVM Overview Features Topic Analog InterfaceSignal Conditioning Analog Interface Block DiagramSingle Supply Operation Reference Voltage Physical Pinout Description− 3. Jumper Settings Configuration OptionsDigital Interface − 1. Digital Signal Pinout Description Power Supply Page Getting the Most From Your EVM Stand-Alone EVM Additional Hardware Options− 1. EVM Selection Page Bill of Materials, Board Layouts, and Schematic Qty Value Ref Des Description Vendor Part number Bill of Materials for EVMTLC3578IPW − 1. Top Layer Board Layouts− 2. Internal Plane − 4. Bottom Layer Mirrored EVM Schematic CH0 Ti a U5B

TLC3578EVM specifications

The Texas Instruments TLC3578EVM is an evaluation module designed to facilitate the development and testing of applications using the TLC3578, a high-performance, 16-bit analog-to-digital converter (ADC). This evaluation module provides an easy interface for engineers and developers to sample the capabilities of the TLC3578 and integrate it into their own designs.

One of the standout features of the TLC3578EVM is its high resolution of 16 bits, enabling precise and accurate digital representation of analog signals. This resolution is essential for applications requiring high fidelity, such as medical instrumentation, industrial automation, and data acquisition systems. The device supports sampling rates of up to 1 MSPS (megasample per second), making it suitable for capturing rapid changes in the input signal.

The TLC3578EVM utilizes a differential input architecture, which significantly enhances its ability to reject common-mode noise, thereby improving signal integrity. This feature is particularly important in noisy environments where precision is critical. Additionally, the ADC includes onboard features like programmable gain amplification, which provides flexibility in handling various input signal ranges and enhances the overall dynamic performance.

In terms of connectivity, the TLC3578EVM supports multiple interfaces. It includes an SPI (Serial Peripheral Interface) for easy communication with microcontrollers and processors, allowing for straightforward data handling and configuration. The evaluation module also features an onboard clock generator for synchronizing the ADC, which simplifies system design and reduces the need for external components.

The module is designed with user-friendly features that make it accessible for both beginners and experienced engineers. It includes comprehensive documentation, software tools, and reference designs that help users get started quickly. The design is also optimized for low power consumption, which is crucial for portable applications, ensuring that battery life is extended while maintaining high performance.

Overall, the Texas Instruments TLC3578EVM is an ideal tool for evaluating the capabilities of the TLC3578 ADC. With its high resolution, fast sampling rate, robust differential input architecture, and user-friendly design, it provides engineers with the necessary tools to accelerate development, reduce time to market, and ensure the performance of their analog signal processing applications.
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