Texas Instruments SLAU039, User Manual

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Introduction
Introduction
This user’s guide discusses the design of the AD50-EVM evaluation board and
its use to demonstrate the performance of the TLC320AD50C (AD50) analog
interface circuit.
The TLC320AD50C provides high-resolution low-speed signal conversion
from digital-to-analog (D/A) and from analog-to-digital (A/D) using oversam-
pling sigma-delta technology. This device consists of two serial synchronous
conversion paths (one for each data direction) and includes an interpolation
filter before the DAC and a decimation filter after the ADC. Other overhead
functions provide on-chip timing and control. The sigma-delta architecture pro-
duces high-resolution analog-to-digital and digital-to-analog conversion at low
system speeds and low cost.
The options and the circuit configurations of this device can be programmed
through the serial interface. The options include reset, power down, commu-
nications protocol, serial clock rate, signal sampling rate, gain control, and test
mode.
Topic Page
1.1 Scope of User’s Guide 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Block Diagram of AD50-EVM 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Special Considerations When Using Sigma-Delta Converters 1-4 . . . . .
Chapter 1