参数资料
型号: AD9244BSTZRL-40
厂商: Analog Devices Inc
文件页数: 18/36页
文件大小: 0K
描述: IC ADC 14BIT SGL 40MSPS 48LQFP
标准包装: 2,000
位数: 14
采样率(每秒): 40M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 300mW
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: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
输入数目和类型: 2 个单端,单极;1 个差分,单极
AD9244
Rev. C | Page 25 of 36
Reference Decoupling
The VREF pin should be bypassed to the REFGND pin with a
10 μF tantalum capacitor in parallel with a low inductance
0.1 μF ceramic capacitor. It is also necessary to add a capacitor
network to decouple the REFT and REFB pins. Figure 49 shows
the recommended decoupling networks.
CML
The AD9244 has a midsupply reference point. This is used
within the internal architecture of the AD9244 and must be
decoupled with a 0.1 μF capacitor. It sources or sinks a load of
up to 300 μA. If more current is required, the CML pin should
be buffered with an amplifier.
VR
VR is an internal bias point on the AD9244. It must be
decoupled to AGND with a 0.1 μF capacitor.
AD9244
CML
0.1
μF
VR
0.1
μF
02404-063
Figure 63. CML/VR Decoupling
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