Cirrus-logic CDB5581 Instrukcja Użytkownika Pobierz pdf (Strona 4)

CDB5581

4 DS796DB3

1.1 Overview

The CDB5581 evaluation board has both analog and digital circuit sections. The analog section consists

of the CS5581 ADC, two analog input signal buffers, controlled through a multiplexer, that condition the

signal into the ADC, and a precision 4.096 V reference. The digital section consists of board operation

configuration control signals, reset circuitry, an SPI™ serial port, a jumper connection for initiating ADC

calibration, and an EEPROM for evaluation board identification.

The evaluation board operates from +2.5V, -2.5V, +3.3V and communicates through an SPI™ serial port.

Figure 1 illustrates the CDB5581 block diagram.

CS5581

VREF

4.096 V

XTAL

16 MHz

Communication/Control

Interface

Master/Slave

Serial Port

Digital Inputs

to ADC

Digital Outputs

from ADC

IN_A

IN_B

+2.5V GND -2.5V GND +3.3V GND

CS3004

Single-ended

Analog Inputs

Figure 1. CDB5581 Block Diagram

1 2 3 4 5 6 7 8 9 ... 25 26

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Cirrus-logic CDB5581 Instrukcja Użytkownika Strona 4