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| 型號： | AD8475-EVALZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD8475 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 每 IC 通道數(shù)： | 1 - 單 |
| 放大器類型： | 差分 |
| 輸出類型： | 差分，滿擺幅 |
| 轉(zhuǎn)換速率： | 50 V/µs |
| -3db帶寬： | 150MHz |
| 電流 - 輸出 / 通道： | 110mA |
| 工作溫度： | -40°C ~ 85°C |
| 電流供應(yīng)（主 IC）： | 3mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 10 V，±1.5 V ~ 5 V |
| 板類型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | AD8475 |
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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