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参数资料
| 型号： | XRD8785 |
| 厂商： | Exar Corporation |
| 英文描述： | CMOS 8-Bit High Speed Analog-to-Digital Converter |
| 中文描述： | 的CMOS 8位高速模拟数字转换器 |
| 文件页数： | 12/15页 |
| 文件大小： | 1356K |
| 代理商： | XRD8785 |
XRD8785
6
Rev. 3.00
Figure 5. Equivalent Input Circuit
Figure 6. Typical Circuit Connections
APPLICATION NOTES
Signals should not exceed V
DD +0.5V or go below GND
–0.5V. All pins have internal protection diodes that will
protect them from short transients (<100
s) outside
the supply range.
AGND and DGND pins are connected internally
through the P-substrate. DC voltage differences be-
tween GND pins will cause undesirable internal sub-
strate currents.
The power supply (V
DD) and reference voltage (VRT &
V
RB) pins should be decoupled with 0.1F and 10F
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 XRD8785 to other
parts of the system.
The reference can be biased internally by shorting V
RT
to V
RTS and VRB to VRBS. This will generate 0.6V at VRB
and 2.6V at V
RT (see Figure 5).
If the internal reference pins V
RTS and/or VRBS are not
used, they should be left unconnected.
The output enable pin (OE) should not be left uncon-
nected. If not controlled by an active signal then it must
be tied to a logic low value.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRD8785AID | 制造商:EXAR 制造商全称:EXAR 功能描述:CMOS 8-Bit High Speed Analog-to-Digital Converter |
| XRD8785AID-F | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| XRD8785AIDTR-F | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| XRD8785AIK | 制造商:EXAR 制造商全称:EXAR 功能描述:CMOS 8-Bit High Speed Analog-to-Digital Converter |
| XRD8785AIKTR | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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