V
參數(shù)資料
型號(hào): AD8331ARQZ-RL
廠商: Analog Devices Inc
文件頁(yè)數(shù): 22/56頁(yè)
文件大?。?/td> 0K
描述: IC VGA SINGLE W/PREAMP 20QSOP
設(shè)計(jì)資源: Interfacing the High Frequency AD8331 to AD9215 (CN0096)
標(biāo)準(zhǔn)包裝: 2,500
系列: X-AMP®
類型: 可變?cè)鲆娣糯笃?br>
應(yīng)用: 信號(hào)處理
安裝類型: 表面貼裝
封裝/外殼: 20-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 20-QSOP
包裝: 帶卷 (TR)
AD8331/AD8332/AD8334
Rev. G | Page 29 of 56
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–3
–2
–1
0
1
2
3
V
OH
,
V
OL
(V
)
VINH (V)
03
19
9-
0
80
RCLMP =
8.8k
3.5k
RCLMP = 1.86k
Output Clamping
Outputs are internally limited to a level of 4.5 V p-p differential
when operating at a 2.5 V common-mode voltage. The postamp
implements an optional output clamp engaged through a resistor
from RCLMP to ground. Table 8 shows a list of recommended
resistor values.
Output clamping can be used for ADC input overload protection, if
needed, or postamp overload protection when operating from a
lower common-mode level, such as 1.5 V. The user should be
aware that distortion products increase as output levels approach
the clamping levels, and the user should adjust the clamp resistor
accordingly. For additional information, see the Applications
Information section.
The accuracy of the clamping levels is approximately ±5% in LO
or HI mode. Figure 80 illustrates the output characteristics for a
few values of RCLMP.
Figure 80. Output Clamping Characteristics
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