參數(shù)資料
型號: 20-101-1028
廠商: Rabbit Semiconductor
文件頁數(shù): 4/172頁
文件大?。?/td> 0K
描述: MODULE RABBITCORE RCM3750
標(biāo)準(zhǔn)包裝: 1
系列: RabbitCore®
模塊/板類型: MPU 核心模塊
適用于相關(guān)產(chǎn)品: RCM3750
產(chǎn)品目錄頁面: 619 (CN2011-ZH PDF)
其它名稱: 316-1110
User’s Manual
95
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C
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7
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B.1.5 Analog Features
The RCM3700 Prototyping Board has an onboard ADS7870 A/D converter to demon-
strate the interface capabilities of the Rabbit 3000. The A/D converter multiplexes con-
verted signals from eight single-ended or three differential inputs to alternate Serial Port B
on the Rabbit 3000 (Parallel Port pins PD4 and PD5).
B.1.5.1 A/D Converter Inputs
Figure B-5 shows a pair of A/D converter input circuits. The resistors form an approx.
10:1 attenuator, and the capacitor filters noise pulses from the A/D converter input.
Figure B-5. A/D Converter Inputs
The A/D converter chip can make either single-ended or differential measurements
depending on the value of the opmode parameter in the software function call. Adjacent
A/D converter inputs can be paired to make differential measurements. The default setup
on the Prototyping Board is to measure only positive voltages for the ranges listed in
178 kW
ADC_IN0
AGND
+ V
ADC_IN1
VREF
178 kW
1 nF
20
k
W
ADC
20
k
W
1 nF
User Circuits
JP7
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