VOUT, dm R" />
參數(shù)資料
型號(hào): AD8475ACPZ-WP
廠商: Analog Devices Inc
文件頁(yè)數(shù): 8/24頁(yè)
文件大?。?/td> 0K
描述: IC FUNNEL AMP DIFF PREC 16LFCSP
標(biāo)準(zhǔn)包裝: 50
放大器類(lèi)型: 差分
電路數(shù): 1
輸出類(lèi)型: 差分,滿擺幅
轉(zhuǎn)換速率: 50 V/µs
-3db帶寬: 150MHz
電流 - 電源: 3mA
電流 - 輸出 / 通道: 110mA
電壓 - 電源,單路/雙路(±): 3 V ~ 10 V,±1.5 V ~ 5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 16-WFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 16-LFCSP-WQ(3x3)
包裝: 托盤(pán) - 晶粒
AD8475
Data Sheet
Rev. C | Page 16 of 24
TERMINOLOGY
+IN
VOCM
–IN
+OUT
–OUT
VOUT, dm
RL, dm
AD8475
1k
1.25k
1k
09432-
162
Figure 48. Signal and Circuit Definitions
Differential Voltage
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 ground reference.
Similarly, the differential input voltage is defined as
VIN, dm = (V+IN (VIN))
Common-Mode Voltage
Common-mode voltage refers to the average of two node voltages
with respect to the local ground reference. The output common-
mode voltage is defined as
VOUT, cm = (V+OUT + VOUT)/2
The input common-mode voltage is defined as
VIN, cm = (V+IN + VIN)/2
Balance
Output balance is a measure of how close the output differential
signals are to being equal in amplitude and opposite in phase.
Output 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 midpoint
with the magnitude of the differential signal. 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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