This split-supply, high-side current sensing solution accurately detects load currents from 10 μA to 100 mA. The linear range of the differential voltage output is from -4.9V to +4.9 V. An instrumentation amplifier with pin-programmable gain was selected in order to measure the four-decade load current range.
TI Precision Designs are analog solutions created by TI’s analog experts. Verified Designs offer the theory, component selection, simulation, complete PCB schematic & layout, bill of materials, and measured performance of useful circuits. Circuit modifications that help to meet alternate design goals are also discussed.
Senses Current from 10uA-100mA with <0.05% Error
Supports up to ±12.5V Common-mode Input Range
10mV to 4.9V output for measurement by common 5V ADCs
Utilizes PGA281 pin-programmable gain instrumentation amplifier to achieve four decade current measurement
High-Side, Four Decade, Bi-directional, Current Sensing Verified Solution
| Manufacturer | Texas Instruments |
|---|---|
| Category | Sensor Solutions |
| Sub-Category | Current Sensing |
| Eval Board |
Board not Stocked
|
| Voltage In |
±15 V
|
| Sensing Method |
Shunt
|
| Current Sensing Max |
100 mA
|
| Features |
Auto-Zeroed
Differential Inputs Digital Gain |
| Quiescent Current [Maximum] |
3 mA
|
| Quiescent Current [Typical] |
2.1 mA
|
| Component Count + Extras |
43 + 18
|
| Design Author |
Texas Instruments
|
| Main I.C. Base Part |
PGA281
TPS7A4101 |
| Date Created By Author | |
| Date Added To Library | 2014-10 |
设置
快速交货
免运费
国际贸易术语
支付类型
市场产品
