参数资料
| 型号： | XRD8785AIDTR-F |
| 厂商： | Exar Corporation |
| 文件页数： | 12/15页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 20MSPS 24SOIC |
| 产品变化通告： | Packaging Change 15/Jul/2010 |
| 标准包装： | 1,500 |
| 位数： | 8 |
| 采样率（每秒）： | 20M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 675mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | * |
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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| 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 |
| XRD8785AIKTR-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 |
| XRD8785AIP | 制造商:EXAR 制造商全称:EXAR 功能描述:CMOS 8-Bit High Speed Analog-to-Digital Converter |
| XRD8785REVAL | 功能描述:数据转换 IC 开发工具 XRD8785 EVAL BOARD RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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