26V, 350kHz, bi-directional, high-precision current sense amplifier in ultra small (sot-563) package
Product details
Parameters
Package | Pins | Size
Features
- SOT-563 package (1.6 mm × 1.6 mm)
- 39% smaller footprint than SC70
- 0.55 mm package height
- Common-mode range (VCM): –0.2 V to +26 V
- High bandwidth: 350 kHz (A1 devices)
- Offset voltage:
- ±55 µV (max) at VCM = 0 V
- ±100 µV (max) at VCM = 12 V (A4 device)
- Output slew rate: 2 V/µs
- Bidirectional current-sensing capability
- Accuracy:
- ±0.2% maximum gain error (A1, A2, A3)
- 0.5-µV/°C maximum offset drift
- Gain options:
- 20 V/V (A1 devices)
- 50 V/V (A2 devices)
- 100 V/V (A3 devices)
- 200 V/V (A4 devices)
- Quiescent current: 260 µA (max)
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Description
The INA185 current sense amplifier is designed for use in cost-sensitive space constrained applications. This device is a bidirectional, current-sense amplifier (also called a current-shunt monitor) that senses voltage drop across a current-sense resistor at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INA185 integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.
The INA185 operates from a single 2.7-V to 5.5-V power supply. The device draws a maximum supply current of 260 µA and features high slew rate and bandwidth making this device an excellent choice for many power-supply and motor-control applications.
The INA185 is available in a low profile 6-pin, SOT-563 package, and has a body size of size of only 2.56 mm2, including the device pins. All device options are specified over the extended operating temperature range of –40°C to +125°C.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Evaluation of the INA185Ax in all gain options.
- Test points to allow ease of access to device pins.
- Capability to evaluate both high-side and low-side configurations.
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
Design files
-
download TIDA-00302 BOM.pdf (52KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-5X3 (DRL) | 6 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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