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參數資料
| 型號： | ADA4937-2YCPZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 10/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC DRIVER DUAL DIFF 24LFCSP |
| 標準包裝： | 5,000 |
| 類型： | ADC 驅動器 |
| 應用： | 數據采集 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 24-LFCSP-VQ（4x4） |
| 包裝： | 帶卷 (TR) |
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Data Sheet
ADA4937-1/ADA4937-2
Rev. D | Page 17 of 28
TERMINOLOGY
+IN
–IN
+OUT
–OUT
+DIN
–FB
+FB
–DIN
VOCM
RG
RF
RG
VOUT, dm
RL, dm
RF
ADA4937
06591-
049
Figure 52. 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 reference.
Common-Mode Voltage
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
Output Balance
Output balance is a measure of how close the 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 midpoint of the
divider with the magnitude of the differential signal (see Figure
50). 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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