Texas Instruments ADS8402 EVM, ADS8412 EVM Digital Interface, Connector.Pin Signal Description

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Chapter 3

Digital Interface

The ADS8402/ADS8412 EVM is designed for easy interfacing to multiple platforms. Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient dual row header/socket combination at P2 and P3. Consult Samtec at www.samtec.com or 1- 800- SAMTEC- 9 for a variety of mating connector options.

Table 3- 1. Pinout for Parallel Control Connector P2

Connector.Pin

 

Signal

Description

 

 

 

 

 

 

 

P2.1

 

 

 

 

 

Daughter card board select pin

 

DC_CS

P2.3

 

 

 

 

 

 

 

 

 

 

 

 

 

P2.5

 

 

 

 

 

 

 

 

 

 

 

 

P2.7

 

 

A0

Address line from processor

 

 

 

 

 

 

P2.9

 

 

A1

Address line from processor

 

 

 

 

 

 

P2.11

 

 

A2

Address line from processor

 

 

 

 

 

 

 

P2.13

 

 

 

 

 

 

 

 

 

 

 

 

 

P2.15

 

 

 

 

 

 

 

 

 

 

 

 

 

P2.17

 

 

 

 

 

 

 

 

 

 

 

 

P2.19

 

 

 

 

Set jumper W3 to select BUSY or inverted signal

 

 

INTc

 

 

 

 

 

 

to be applied to this pin.

Note: All even numbered pins of P2 are tied to DGND.

The read (RD), conversion start (CONVST), and reset (RESET) signals to the converter can be assigned to two different addresses in memory via jumper settings. This allows for the stacking of up to two ADS8402EVMs and/or ADS8412EVMs into processor memory. See Table 3- 2 for jumper settings. Note, the evaluation module does not allow the chip select (CS) line of the converter to be assigned to different memory locations. It is therefore suggested the CS line be grounded or wired to an appropriate signal of the processor.

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Contents User’s Guide Products Applications Important NoticeEVM Important Notice EVM Warnings and Restrictions Read This First Data Sheets Literature NumberFCC Warning Contents Tables FiguresEVM Overview Features IntroductionIntroduction FeaturesAnalog Interface Signal Conditioning ReferenceSignal Conditioning Analog Input ConnectorDescription Signal Name Connector.Pin# Solder Short Jumper Setting Reference Description Jumper Setting DesignatorReference Page Pinout for Parallel Control Connector P2 Connector.Pin Signal DescriptionDigital Interface Reference Designator Description Jumper Settings Jumper Settings for Decoder OutputsData Bus Connector P3 Pinout for Converter Control Connector J3Test Point Signal Description Power Supply RequirementsPower Supply Test Points Power Connector, J1, PinoutPage Using the EVM As a Reference Board As a Prototype BoardAs a Software Test Platform ADS8402/ADS8412EVM BOM, Layout, and Schematic ADS8402/ADS8412EVM Bill Of Materials ADS9393EVM Bill of MaterialsADS8402/ADS8412EVM BOM, Layout, and Schematic Top Layer-Layer ADS8402/ADS8412EVM LayoutGround Plane-Layer Power Plane-Layer Bottom Layer-Layer ADS8402/ADS8412EVM Schematic +IN SJP4 TP6 +5VCC

ADS8402 EVM, ADS8412 EVM, ADS8402 specifications

Texas Instruments is renowned for its innovative semiconductor solutions, and the ADS8402 and ADS8412 analog-to-digital converters (ADCs) showcase the company's commitment to precision in data acquisition applications. The ADS8402 is a 16-bit, 2-channel ADC renowned for its high performance and versatility. It operates at data rates up to 1 MSPS (Mega Samples Per Second), making it ideal for a range of applications including industrial automation, high-speed data acquisition systems, and medical instrumentation.

The ADS8402 boasts a differential input architecture that enhances noise immunity and improves measurement accuracy. With features such as integrated voltage reference and a programmable gain amplifier, the device allows for adaptability in handling various signal levels. Its low power consumption further extends its appeal for portable and battery-operated devices. The device comes equipped with an internal clock generator, simplifying system design by reducing external components.

For developers looking to evaluate the performance of the ADS8402, the ADS8402 EVM (Evaluation Module) provides a robust platform. The EVM includes the necessary hardware for quick and convenient testing of the device's capabilities. It features numerous connectivity options, enabling users to interface with a variety of microcontrollers and processors. Benefiting from TI's extensive software support, the EVM allows for easy data visualization and manipulation through compatible software platforms.

On the other hand, the ADS8412 is an advanced 16-bit ADC with a single channel and supports faster sampling rates up to 2 MSPS. It is designed for applications requiring high precision and high throughput. The device features an integrated digital filter that significantly lowers noise and enhances signal integrity. The ADS8412 is particularly well-suited for precision measurement systems in industries such as telecommunications and data acquisition.

The ADS8412 EVM caters to users who wish to explore the capabilities of the ADS8412 with ease. Similar to the ADS8402 EVM, the ADS8412 evaluation module provides structured support for testing with readily available interfaces. This makes it an invaluable tool for engineers and developers looking to integrate high-performance ADCs into their designs.

Both the ADS8402 and ADS8412 ADCs exemplify Texas Instruments' dedication to delivering high-quality, innovative technologies that meet the demands of modern applications. With their combination of precision, speed, and adaptability, these ADCs are excellent choices for engineers seeking reliable data acquisition solutions.
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