Texas Instruments AMC1203 Evaluation Module AMC1203EVM AMC1203EVM 데이터 시트
제품 코드
AMC1203EVM
2
1
J4
R2
R1
C4
10pF
10pF
C5
10pF
10pF
IN+
IN-
12
12
C3
330pF
330pF
ISOGND
AMC1203EVM Overview
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1
AMC1203EVM Overview
1.1
Features
AMC1203EVM:
•
Full-featured evaluation module for the
single-channel,
ΔΣ
modulator
•
9-pin sub-D connector for interfacing to the
digital filter evaluation module
•
Screw terminals for easy access to analog inputs
1.2
Introduction
The AMC1203 is a 1-bit modulator with an output buffer separated from the input interface circuitry by a
silicon dioxide (SiO
silicon dioxide (SiO
2
) isolation barrier. The isolation barrier provides galvanic isolation of up to 4000 V
PEAK
.
When used in combination with the AMC1210 or other digital filter, the AMC1203 can be used to achieve
16-bit analog-to-digital (A/D) conversion with no missing codes.
16-bit analog-to-digital (A/D) conversion with no missing codes.
For use in high-resolution measurement applications, an effective accuracy of 14 bits can be obtained with
a digital filter bandwidth of 20 kHz at a modulator rate of 10 MHz.
a digital filter bandwidth of 20 kHz at a modulator rate of 10 MHz.
Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with
the AMC1203EVM.
the AMC1203EVM.
2
Analog Interface
The analog input to the AMC1203 is routed from a two-wire screw terminal screw at J4. This screw
terminal gives the user access to the inverting and noninverting inputs of the AMC1203.
terminal gives the user access to the inverting and noninverting inputs of the AMC1203.
2.1
Analog Inputs
The analog input to the AMC1203EVM board consists of simple R/C filter circuits. The input circuit for the
AMC1203 is shown in
AMC1203 is shown in
.
Figure 1. AMC1203EVM Schematic: Analog Input Section
2
AMC1203EVM
SBAU170 – August 2010
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