参数资料
| 型号： | AD8278ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP DIFFERENTIAL 8SOIC |
| 产品培训模块： | Top Five Instrumentation Amplifier Problems |
| 标准包装： | 98 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 1.4 V/µs |
| 增益带宽积： | 1MHz |
| 电压 - 输入偏移： | 50µV |
| 电流 - 电源： | 200µA |
| 电流 - 输出 / 通道： | 15mA |
| 电压 - 电源，单路/双路(±)： | 2 V ~ 36 V，±2 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
| 产品目录页面： | 771 (CN2011-ZH PDF) |
AD8278/AD8279
Rev. C | Page 18 of 24
APPLICATIONS INFORMATION
CONFIGURATIONS
The AD8278 and AD8279 can be configured in several ways
gain accuracy and gain drift because they rely on the internal
matched resistors. Note that Figure 53 shows the AD8278 and
AD8279 as difference amplifiers with a midsupply reference
voltage at the noninverting input. This allows the AD8278 and
AD8279 to be used as a level shifter, which is appropriate in
single-supply applications that are referenced to midsupply.
Table 10 lists several single-ended amplifier configurations
that are not illustrated.
40k
2
3
5
1
6
20k
40k
20k
–IN
OUT
+IN
VOUT = (VIN+ VIN)
08
30
8-
04
7
AD8278
Figure 51. Difference Amplifier, Gain =
20k
5
1
2
3
6
40k
20k
40k
–IN
OUT
+IN
VOUT = 2(VIN+ VIN)
08
30
8-
04
8
AD8278
Figure 52. Difference Amplifier, Gain = 2
40k
2
3
5
1
VREF = MIDSUPPLY
6
20k
40k
20k
–IN
OUT
+IN
VOUT = (VIN+ VIN) + VREF
08
308
-04
9
AD8278
Figure 53. Difference Amplifier, Gain = , Referenced to Midsupply
20k
5
1
2
3
VREF = MIDSUPPLY
6
40k
20k
40k
–IN
OUT
+IN
VOUT = 2 (VIN+ VIN) + VREF
08
308
-05
0
AD8278
Figure 54. Difference Amplifier, Gain = 2, Referenced to Midsupply
40k
2
3
5
1
6
20k
40k
20k
IN
OUT
VOUT = –VIN
0
83
08
-0
51
AD8278
Figure 55. Inverting Amplifier, Gain =
40k
25
6
20k
IN
OUT
3
1
40k
20k
VOUT = 1.5VIN
08
30
8-
0
52
AD8278
Figure 56. Noninverting Amplifier, Gain = 1.5
20k
2
3
5
1
6
40k
20k
40k
OUT
IN
VOUT = 2VIN
0
83
08
-0
53
AD8278
Figure 57. Noninverting Amplifier, Gain = 2
Table 10. AD8278 Difference and Single-Ended Amplifier Configurations
Amplifier Configuration
Signal Gain
Pin 1 (REF)
Pin 2 (VIN)
Pin 3 (VIN+)
Pin 5 (SENSE)
Difference Amplifier
+
GND
IN
IN+
OUT
Difference Amplifier
+2
IN+
OUT
GND
IN
Single-Ended Inverting Amplifier
GND
IN
GND
OUT
Single-Ended Inverting Amplifier
2
GND
OUT
GND
IN
Single-Ended Noninverting Amplifier
+32
IN
GND
IN
OUT
Single-Ended Noninverting Amplifier
+3
IN
OUT
IN
GND
Single-Ended Noninverting Amplifier
+
GND
IN
OUT
Single-Ended Noninverting Amplifier
+1
IN
GND
OUT
Single-Ended Noninverting Amplifier
+1
GND
OUT
IN
GND
Single-Ended Noninverting Amplifier
+2
IN
OUT
GND
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