参数资料
| 型号： | AD629BRZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF 25MA LDRIFT 8SOIC |
| 产品培训模块： | Top Five Instrumentation Amplifier Problems |
| 设计资源： | Measuring -48 V High-Side Current Using AD629, AD8603, AD780, and AD7453 (CN0100) |
| 标准包装： | 98 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 转换速率： | 2.1 V/µs |
| -3db带宽： | 500kHz |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 900µA |
| 电流 - 输出 / 通道： | 25mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 36 V，±2.5 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) |
AD629
Rev. C | Page 10 of 16
THEORY OF OPERATION
The AD629 is a unity gain, differential-to-single-ended
amplifier (diff amp) that can reject extremely high common-
mode signals (in excess of 270 V with 15 V supplies). It consists
of an operational amplifier (op amp) and a resistor network.
To achieve high common-mode voltage range, an internal
resistor divider (Pin 3 or Pin 5) attenuates the noninverting
signal by a factor of 20. Other internal resistors (Pin 1, Pin 2,
and the feedback resistor) restore the gain to provide a differential
gain of unity. The complete transfer function equals
VOUT = V (+IN) V (IN)
Laser wafer trimming provides resistor matching so that
common-mode signals are rejected while differential input
signals are amplified.
To reduce output drift, the op amp uses super beta transistors
in its input stage. The input offset current and its associated
temperature coefficient contribute no appreciable output
voltage offset or drift, which has the added benefit of reducing
voltage noise because the corner where 1/f noise becomes
dominant is below 5 Hz. To reduce the dependence of gain
accuracy on the op amp, the open-loop voltage gain of the op
amp exceeds 20 million, and the PSRR exceeds 140 dB.
1
2
3
4
8
7
6
5
21.1k
380k
20k
REF(–)
–IN
+IN
–VS
NC
+VS
OUTPUT
REF(+)
AD629
NC = NO CONNECT
0
078
3-
0
01
Figure 31. Functional Block Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD629BRZ-R7 | 功能描述:IC AMP DIFF 25MA LDRIFT 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| AD629BRZ-RL | 功能描述:IC AMP DIFF 25MA LDRIFT 8SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:150 系列:- 放大器类型:音频 电路数:2 输出类型:- 转换速率:5 V/µs 增益带宽积:12MHz -3db带宽:- 电流 - 输入偏压:100nA 电压 - 输入偏移:500µV 电流 - 电源:6mA 电流 - 输出 / 通道:50mA 电压 - 电源，单路/双路(±):4 V ~ 32 V，±2 V ~ 16 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:8-TSSOP 包装:管件 |
| AD629-EVAL | 制造商:Analog Devices 功能描述: |
| AD62BS | 制造商:POP 功能描述: |
| AD62H | 制造商:POP 功能描述: |
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