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參數(shù)資料
| 型號(hào)： | ADA4433-1BCPZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SD VIDEO FILTER 8LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 應(yīng)用： | 重構(gòu)濾波器 |
| 輸出類型： | 差分 |
| 電路數(shù)： | 1 |
| -3db帶寬： | 9.9MHz |
| 電流 - 電源： | 13.2mA |
| 電流 - 輸出 / 通道： | 29mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 8-LFCSP-VD（3x3） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ADA4433-1BCPZ-R7DKR |
Data Sheet
ADA4433-1
Rev. 0 | Page 13 of 16
CONFIGURING THE ADA4433-1 FOR SINGLE-
ENDED INPUT SIGNALS
The ADA4433-1 is a fully differential filter/driver that can be
used as a single-ended-to-differential amplifier or as a differential-
to-differential amplifier. In single-ended-to-differential output
applications, bias the IN input appropriately to optimize the
output range. To make the most efficient use of the output range
of the ADA4433-1, especially with low supply voltages, it is
important to allow the differential output voltage to swing in
both a positive and negative direction around the output common-
mode voltage (VOCM) level, the midsupply point. To do this, the
differential input voltage must swing both positive and negative.
Figure 23 shows a 1 V p-p single-ended signal on +IN with IN
grounded. This produces a differential input voltage that ranges
from 0 V to 1 V. The resulting differential output voltage is
strictly positive, where each output swings only above V+OUT or
below VOUT, the midsupply VOCM level. Directly at the output of the
ADA4433-1, the output voltage extends from 0.65 V to 2.65 V,
requiring a full 2 V of output to produce a 1 V p-p signal at the
receiver (represented by the voltage across 2R).
To make a more efficient use of the output range, the IN input is
biased at the midpoint of the expected input signal range, as shown
in Figure 24. A 1 V p-p single-ended signal on +IN, with IN
biased at 0.5 V, produces a differential input voltage that ranges
from 0.5 V to +0.5 V. The resulting differential output voltage
now contains both positive and negative components, where
each output swings both above and below the midsupply VOCM
level. Directly at the output of the ADA4433-1, the output
voltage now extends only from 1.15 V to 2.15 V, requiring only
1 V of the output to produce a 1 V p-p signal at the receiver.
Figure 23. Single-Ended-to-Differential Configuration with Negative Input (IN) Connected to Ground
Figure 24. Single-Ended-to-Differential Configuration with Negative Input (IN) Connected to 0.5 V
INPUT SIGNAL
ADA4433-1
V+IN
VOCM =
1.65V
V+OUT
V–OUT
+
–
V–IN
VDIFF (IN) = V+IN – V–IN
VDIFF (OUT) = V+OUT – V–OUT
VOUT = VDIFF (OUT) ÷ 2
VOUT
R
2R
2.65V
0.65V
R
0V
1.0V
1V p-p
DIFFERENTIAL OUTPUT SIGNAL
DIFFERENTIAL OUTPUT SIGNAL ACROSS 2R
1V p-p
10597-
028
INPUT SIGNAL
ADA4433-1
VOCM =
1.65V
+
–
VDIFF (IN) = V+IN – V–IN
VDIFF (OUT) = V+OUT – V–OUT
VOUT = VDIFF (OUT) ÷ 2
V
R
2R
1.15V
2.15V
R
0V
0.5V
1.0V
1V p-p
DIFFERENTIAL OUTPUT SIGNAL
DIFFERENTIAL OUTPUT SIGNAL ACROSS 2R
1V p-p
10597-
029
V+IN
V+OUT
V–OUT
V–IN
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