参数资料
| 型号： | AD8275BRMZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF R-R LDRIFT 8MSOP |
| 产品培训模块： | Power Line Monitoring |
| 标准包装： | 1 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 25 V/µs |
| -3db带宽： | 15MHz |
| 电压 - 输入偏移： | 150µV |
| 电流 - 电源： | 1.9mA |
| 电流 - 输出 / 通道： | 30mA |
| 电压 - 电源，单路/双路(±)： | 3.3 V ~ 15 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 766 (CN2011-ZH PDF) |
| 其它名称： | AD8275BRMZ-R7DKR |
AD8275
Rev. A | Page 15 of 16
INCREASING INPUT IMPEDANCE
In applications where a high input impedance is needed, low
input bias current op amps can be used to buffer the AD8275.
In Figure 41, an AD8620 is used to provide high input imped-
ance. Input bias current is limited to 10 pA.
07546-
036
AD8275
7
4
5
6
8
1
2
1
3
2
7
6
5
4
8
50k
0.1F
50k
20k
20k
10k
3
–IN
1/2
2/2
+IN
REF2
VREF
REF1
–VS
–13V
0.1F
+VS
+5V
+13V
OUT
VOUT
SENSE
INVERTING
INPUT
NON-
INVERTING
INPUT
AD8620
Figure 41. Adding Op Amp Buffers for High Input Impedance
AC COUPLING
An integrator can be tied to the AD8275 in feedback to create a
high-pass filter as shown in Figure 42. This circuit can be used
to reject dc voltages and offsets. At low frequencies, the impedance
of the capacitor, C, is high. Thus, the gain of the integrator is
high. DC voltage at the output of the AD8275 is inverted and
gained by the integrator. The inverted signal is injected back
into the REFx pins, nulling the output. In contrast, at high fre-
quencies, the integrator has low gain because the impedance of
C is low. Voltage changes at high frequencies are inverted but at
a low gain. The signal is injected into the REFx pins but it is not
enough to null the output. High frequency signals are, therefore,
allowed to pass.
When a signal exceeds fHIGH-PASS, the AD8275 outputs the
conditioned input signal.
07546-
037
AD8275
7
4
5
6
8
2
50k
0.1F
50k
20k
20k
R
C
10k
3
+IN
–IN
REF2
REF1
VREF
–VS
+VS
+5V
OUT
VOUT
SENSE
V
O
UT
1
fHIGH-PASS =
1
2
πRC
OP
AMP
Figure 42. AC-Coupled Level Translator
USING THE AD8275 AS A LEVEL TRANSLATOR IN
A DATA ACQUISITION SYSTEM
Signal size varies dramatically in some data acquisition applica-
or AD8221, are often used at the inputs to provide CMRR and
high input impedance. However, the instrumentation amplifiers
output ±10 V signals and the ADC full scale is 5 V or 4.096 V.
In Figure 43, the AD8275 serves as a level translator between
the in-amp and the ADC. The AD8275, along with the AD8228
and the AD8253, have very low gain drift because all gain setting
resistors are internal and laser-trimmed.
07546-
143
VREF
AD8275
7
4
5
6
8
2
50k
0.1F
50k
20k
20k
33
10k
3
+IN
–IN
REF2
REF1
–VS
+VS
+5V
OUT
SENSE
0.1F
2.7nF
10F
1
ADC
VCC
GND
REF
+IN
–IN
0.1F
+15V
–15V
0.1F
IN-AMP
Figure 43. Level Translation in a Data Acquisition System
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8275BRMZ-RL | 功能描述:IC AMP DIFF R-R LDRIFT 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:3 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:70µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:Digi-Reel® 其它名称:MAX4475AUT#TG16DKR |
| AD8276 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers |
| AD8276ARMZ | 功能描述:IC AMP DIFF R-R 550KHZ LP 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| AD8276ARMZ | 制造商:Analog Devices 功能描述:IC DIFF AMP 550KHZ 1.1V/ MSOP-8 |
| AD8276ARMZ-R7 | 功能描述:IC AMP DIFF R-R 550KHZ LP 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°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 |
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