參數(shù)資料
型號: AD8139ARDZ
廠商: Analog Devices Inc
文件頁數(shù): 17/25頁
文件大?。?/td> 0K
描述: IC AMP DIFF R-R LN LDIST 8SOIC
標(biāo)準(zhǔn)包裝: 98
放大器類型: 差分
電路數(shù): 1
輸出類型: 差分,滿擺幅
轉(zhuǎn)換速率: 800 V/µs
-3db帶寬: 410MHz
電流 - 輸入偏壓: 2.25µA
電壓 - 輸入偏移: 150µV
電流 - 電源: 24.5mA
電流 - 輸出 / 通道: 100mA
電壓 - 電源,單路/雙路(±): 4.5 V ~ 12 V,±2.25 V ~ 6 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm Width)裸露焊盤
供應(yīng)商設(shè)備封裝: 8-SOIC-EP
包裝: 管件
產(chǎn)品目錄頁面: 770 (CN2011-ZH PDF)
AD8139
Rev. B | Page 23 of 24
Exposed Paddle (EP)
Because this is a single-ended-to-differential application on a
single supply, the input common-mode voltage swing must be
checked. From Figure 64, β = 0.52, VOCM = 2.4 V, and VICM is
1.1 V p-p swinging about ground. Using Equation 16, VACM is
calculated to be 0.53 V p-p swinging about a baseline of 1.25 V,
and the minimum negative excursion is approximately 1 V.
The 8-lead SOIC and the 8-lead LFCSP have an exposed paddle
on the bottom of the package. To achieve the specified thermal
resistance, the exposed paddle must be soldered to one of the
PCB planes. The exposed paddle mounting pad should contain
several thermal vias within it to ensure a low thermal path to
the plane.
AD8139
+
8
2
1
6
3
4
2.4V
2V p-p
RT
61.9
5
VOCM
200
226
205
25
0.01F
AIN
GND C1
0.1F
C2
VREF
0.1F
AVCC
DVCC
5V
3.3V
AD6645
VS
SIGNAL
SOURCE
50
04
67
9-
0
54
Figure 64. AD8139 Driving AD6645, 14-Bit, 80 MSPS/105 MSPS ADC
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