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參數(shù)資料
型號(hào): AD8138AR-EBZ
廠商: Analog Devices Inc
文件頁數(shù): 9/25頁
文件大小: 0K
描述: BOARD EVAL FOR AD8138AR
標(biāo)準(zhǔn)包裝: 1
每 IC 通道數(shù): 1 - 單
放大器類型: 差分
板類型: 裸(未填充)
已供物品:
已用 IC / 零件: 8-SOIC 封裝
AD8138
Rev. F | Page 16 of 24
OPERATIONAL DESCRIPTION
DEFINITION OF TERMS
AD8138
+IN
–IN
+OUT
–OUT
CF
RF
+DIN
–DIN
VOCM
RG
VOUT, dm
RL, dm
01
07
3-
0
41
Figure 42. Circuit Definitions
Differential voltage refers to the difference between two node
voltages. For example, the output differential voltage (or
equivalently output differential-mode voltage) is defined as
VOUT, dm = (V+OUT VOUT)
where V+OUT and VOUT refer to the voltages at the +OUT and
OUT terminals with respect to a common reference.
Common-mode voltage refers to the average of two node
voltages. The output common-mode voltage is defined as
VOUT, cm = (V+OUT + VOUT)/2
Balance is a measure of how well differential signals are
matched in amplitude and exactly 180° apart in phase. Balance
is most easily determined by placing a well-matched resistor
divider between the differential voltage nodes and comparing
the magnitude of the signal at the divider’s midpoint with the
magnitude of the differential signal (see Figure 41). By this
definition, output balance is the magnitude of the output
common-mode voltage divided by the magnitude of the output
differential mode voltage:
dm
OUT
cm
OUT
V
Error
Balance
Output
,
=
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