参数资料
型号: AD9229ABCPZRL7-50
厂商: Analog Devices Inc
文件页数: 16/40页
文件大小: 0K
描述: IC ADC 12BIT SRL 50MSPS 48LFCSP
标准包装: 750
位数: 12
采样率(每秒): 50M
数据接口: 串行
转换器数目: 4
功率耗散(最大): 1.08W
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-VFQFN 裸露焊盘,CSP
供应商设备封装: 48-LFCSP-VQ(7x7)
包装: 带卷 (TR)
输入数目和类型: 8 个单端,单极;4 个差分,单极
AD9229
Rev. B | Page 23 of 40
Exposed Paddle Thermal Heat Slug Recommendations
SILKSCREEN PARTITION
PIN 1 INDICATOR
04418-
052
It is mandatory that the exposed paddle on the underside of the
ADC be connected to analog ground (AGND) to achieve the
best electrical and thermal performance of the AD9229. A
continuous exposed copper plane on the PCB should mate to
the AD9229 exposed paddle, Pin 0. The copper plane should
have several vias to achieve the lowest possible resistive thermal
path for heat dissipation to flow through the bottom of the PCB.
These vias should be solder or epoxy filled (plugged).
Figure 46. Typical PCB Layout
To maximize the solder coverage and adhesion between the
ADC and PCB, overlay a silkscreen to partition the continuous
copper plane on the PCB into several uniform sections. This
provides several tie points between the two during the reflow
process. Using one continuous plane with no silkscreen
partitions only guarantees one tie point between the ADC and
PCB. See Figure 46 for a PCB layout example. For detailed
information on packaging and the PCB layout of chip scale
packages, visit www.analog.com.
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