参数资料
型号: AD8331ARQ-REEL
厂商: Analog Devices Inc
文件页数: 22/56页
文件大小: 0K
描述: IC VGA SINGLE W/PREAMP 20-SSOP
产品变化通告: Product Discontinuance 27/Oct/2011
设计资源: Interfacing the High Frequency AD8331 to AD9215 (CN0096)
标准包装: 2,500
系列: X-AMP®
类型: 可变增益放大器
应用: 信号处理
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.154",3.90mm 宽)
供应商设备封装: 20-QSOP
包装: 带卷 (TR)
配用: AD8331-EVALZ-ND - BOARD EVAL FOR AD8331
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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