参数资料
| 型号： | AD628ARZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/21页 |
| 文件大小： | 0K |
| 描述： | IC AMP PGA DIFF PREC 8SOIC |
| 标准包装： | 1,000 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| 转换速率： | 0.3 V/µs |
| -3db带宽： | 600kHz |
| 电流 - 输入偏压： | 1.5nA |
| 电压 - 输入偏移： | 150µV |
| 电流 - 电源： | 1.6mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 36 V，±2.25 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： | 带卷 (TR) |
AD628
Rev. G | Page 15 of 20
THEORY OF OPERATION
The AD628 is a high common-mode voltage difference
amplifier, combined with a user-configurable output amplifier
excess of 120 V are accurately scaled by a precision 11:1 voltage
divider at the input. A reference voltage input is available to the
user at Pin 3 (VREF). The output common-mode voltage of the
difference amplifier is the same as the voltage applied to the
reference pin. If the uncommitted amplifier is configured for
gain, connect Pin 3 to one end of the external gain resistor to
establish the output common-mode voltage at Pin 5 (OUT).
The output of the difference amplifier is internally connected to
a 10 kΩ resistor trimmed to better than ±0.1% absolute accuracy.
The resistor is connected to the noninverting input of the
output amplifier and is accessible at Pin 4 (CFILT). A capacitor
can be connected to implement a low-pass filter, a resistor can
be connected to further reduce the output voltage, or a clamp
circuit can be connected to limit the output swing.
The uncommitted amplifier is a high open-loop gain, low offset,
low drift op amp, with its noninverting input connected to the
internal 10 kΩ resistor. Both inputs are accessible to the user.
Careful layout design has resulted in exceptional common-
mode rejection at higher frequencies. The inputs are connected
to Pin 1 (+IN) and Pin 8 (IN), which are adjacent to the power
pins, Pin 2 (VS) and Pin 7 (+VS). Because the power pins are at
ac ground, input impedance balance and, therefore, common-
mode rejection are preserved at higher frequencies.
+IN
–IN
+IN
–IN
A2
A1
+IN
–IN
100k
10k
VREF
10k
OUT
G = +0.1
CFILT
RG
02
99
2-
0
28
5
6
4
3
1
8
Figure 28. Simplified Schematic
+VS
+IN
–IN
–VS
A2
+IN
–IN
100k
10k
VREF
REFERENCE
VOLTAGE
10k
AD628
OUT
G = +0.1
RG
REXT3
CFILT
REXT2
REXT1
+IN
–IN
A1
5
3
2
1
8
6
02
99
2-
0
29
4
7
Figure 29. Circuit Connections
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| 0459858312 | CONN HEADER 8PWR 12SGL 2.36MM |
| AD628ARMZ-R7 | IC AMP PGA DIFF PREC 8MSOP |
| 0001.2529 | FUSE 3.15A 250V 6.3X32 T-LAG |
| 0702871033 | CONN HEADER BKWY DL TIN 70POS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD628ARZ-RL | 功能描述:IC AMP PGA DIFF PREC 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| AD628-EVAL | 制造商:Analog Devices 功能描述:Evaluation Board For High Voltage Current Shunt Sensing |
| AD629 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Channel Audio Difference Amplifier |
| AD629_07 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Common-Mode Voltage, Difference Amplifier |
| AD629A | 制造商:AD 制造商全称:Analog Devices 功能描述:High Common-Mode Voltage Difference Amplifier |
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