參數(shù)資料
型號(hào): XRD8775
廠商: Exar Corporation
英文描述: CMOS 8-Bit High Speed Analog-to-Digital Converter
中文描述: 的CMOS 8位高速模擬數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù): 6/15頁(yè)
文件大小: 1206K
代理商: XRD8775
XRD8775
6
Rev. 4.00
APPLICATION NOTES
Signals should not exceed AV
+0.5V or go below
AGND -0.5V or DV
+0.5V or DGND -0.5V. All pins
have internal protection diodes that will protect them
from short transients (<100
μ
s) outside the supply
range.
AGND and DGND pins are connected internally through
the P- substrate. DC voltage differences between these
pins will cause undesirable internal substrate currents.
The power supply (AV
) and reference voltage (V
RT
&
V
) pins should be decoupled with 0.1
μ
F and 10
μ
F
capacitors to AGND, placed as close to the chip as
possible.
The digital outputs should not drive long wires or buses.
The capacitive coupling and reflections will contribute
noise to the conversion.
To avoid timing errors, use the rising edge of the sample
clock (CLK) to latch data from the XRD8775 to other
parts of the system.
The reference can be biased internally by shorting V
RT
to V
and V
RB
to V
. This will generate 0.6V at V
RB
and 2.6V at V
RT
(see
Figure 5.).
If the internal reference pins V
and/or V
RBS
are not
used they should be left unconnected.
Graph 1. DNL vs. Code
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
0
32
64
96
128
160
192
224
256
Code
D
Vdd = 5.0V
Vrt = 2.6V
Vrb = 0.6V
Fs = 15MHz
Ta = 25
o
C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRD8775AID 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:CMOS 8-Bit High Speed Analog-to-Digital Converter
XRD8775AID-F 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
XRD8775AIP 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:CMOS 8-Bit High Speed Analog-to-Digital Converter
XRD8775AIP-F 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
XRD8775AIU 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32