DC1760A

Series:	--
Part Status:	Active
Number of A/D Converters:	1
Number of Bits:	14
Sampling Rate (Per Second):	125M
Data Interface:	Parallel
Input Range:	2 Vpp
Power (Typ) @ Conditions:	209mW @ 125MSPS
Utilized IC / Part:	LTC2261-14, LTC6409
Supplied Contents:	Board(s)
Base Part Number:	LTC2261

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Introduction

Analog to Digital Converters (ADCs) are ubiquitous in many systems today ranging from consumer electronics to industrial applications. The DC1760A is an evaluation board from Analog Devices that is designed to evaluate the performance of ADCs in a wide range of applications. This evaluation board is a complete, integrated system that provides everything necessary for design and evaluation of a complete ADC system. This article provides an overview of the DC1760A, its application field and working principle.

Overview

The DC1760A is an evaluation board that is based on the Analog Devices AD630, an ADC with 14 bits of resolution. The board is designed to evaluate the performance of the AD630 and is optimized for medium to high speed resolution and accuracy. The board provides numerous features to facilitate design and evaluation and includes two channels for sampling and clocking. The primary features of the DC1760A are outlined below: • A single board with two channels for sampling and clocking • Analog signal conditioning for low noise input signals • Built-in power supply for the AD630 as well as other ICs • Built-in programmable voltage reference and bias current sources • High-resolution ADC conversion results formatting • Support and debugging tools such as crystal frequency counter • Option to integrate the board into higher level systems • Jumper-configurable communications ports for connection to a PC

Application field

The DC1760A is designed to evaluate the performance of the AD630 in a wide range of applications. The board is suitable for use in testing and design verification, automated test systems, as well as sensor design, measurement and calibration. Additionally, the board can be used in data acquisition systems, process control systems, automotive applications and in medical instrumentation.

Working principle

The DC1760A operates according to the simple three-step process common to most ADCs. First, an analog input signal is applied to an input port. The second step is the conversion of the analog signal to a digital representation by the ADC. Finally, the digital signal is output from the ADC in a form that can be read and used by a computer or microcontroller. In the case of the DC1760A, the board provides two analog input ports that can be used to sample different signals. The signals are conditioned and amplified before being converted to a digital representation by the AD630. The digital output of the AD630 is formatted and available in several formats including binary-off, binary-on, differential and even-parity. The board also includes a programmable voltage reference and bias current sources that can be used to customize the operation of the AD630 as needed. Additionally, the board supports communications with a PC via a jumper-configurable serial port.

Conclusion

The DC1760A is an evaluation board designed to evaluate the performance of the Analog Devices AD630 ADC. The board is optimized for medium to high speed resolution and accuracy and provides numerous features to facilitate design and evaluation. The board is suitable for use in a wide range of applications including test and design verification, automated test systems, sensor design, measurement and calibration, data acquisition systems, process control systems, automotive applications and medical instrumentation. The board operates according to the three-step process common to most ADCs, accepting an analog input signal, converting it to a digital representation and then outputting it in a form that can be read and used by a computer or microcontroller.

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