| INA185 amplifier, 55µV input offset
Texas TLV4021·TVL4041 Comparators
| Low internal voltage reference of 0.2V

Texas Instruments (TI) announced on the 27th that it is launching an ultra-small current sense amplifier and an ultra-small precision reference comparator with an internal voltage of 1.2 V and 0.2 V.

The INA185 current-sense amplifier, open-drain TLV4021, and push-pull TLV4041 comparator enable engineers to create smaller, simpler, and more integrated designs while maintaining high performance.

An ultra-compact, high-performance overcurrent detection solution can be implemented using the INA185 amplifier and one of two comparators.

The newly unveiled devices are optimized for personal electronics such as peripherals, docking stations, and laptops, as well as enterprise, industrial, and communications applications.


Implementing high precision in narrow spaces
INA185 current sense amplifier
The INA185 amplifier is It is a SOT-563 miniature transistor package measuring 1.6 mm x 1.6 mm (2.5 mm ² ), which is approximately 40% smaller than competing leaded packages.

A 55µV input offset enables more precise performance measurements even at low currents, and the use of lower-value shunt resistors can also reduce system power consumption.

350kHz bandwidth, 2V/µS slew rate, and phase current (reproduction) replication method increase motor efficiency and reduce system power consumption.

The precisely matched resistor gain network within the amplifier provides robust performance across temperature and process variations with a low gain error rate of 0.2%.

The device has a default response time of 2µS, enabling rapid fault detection to prevent system damage.


Added features to existing form factors
TLV4021·TVL4041 comparators
The comparator's integrated voltage reference, housed in a tiny 0.73 mm x 0.73 mm DSBGA package, saves board space and optimizes system performance by enabling precise voltage monitoring.

Both comparators are monitored by internal voltage references as low as 0.2 V and achieve a high-precision threshold of 1% over the full temperature range of -40°C to +125°C.

Low quiescent current of 2.5µA extends battery life in smart and connected devices.

With a transmission delay of only 450ns, latency is reduced, allowing the PCS to monitor signals and respond faster.

 
Combination of two products, compact system design
By using the INA185 amplifier and the TLV4021/TLV4041 comparators, engineers can design more compact systems with a smaller overall footprint.

This combination enables a compact, high-performance overcurrent detection solution that is approximately 15% smaller and 50 times faster than competing devices.

The INA185 amplifier, combined with the TLV4021 and TLV4041 comparators, supports high overcurrent detection up to 26 V within the rail. This provides sufficient headroom to efficiently manage current spikes.

Engineers can download TINA-TI SPICE models and reference designs to simulate designs and predict circuit behavior using the INA185 current-sense amplifier and the TLV4021 and TLV4041 comparators.

The newly announced amplifiers can be quickly and easily evaluated on the INA185EVM and TLV4021-41EVM evaluation modules, which are available for $25 each through the TI store and authorized distributors.

The INA185 is available through the TI store and authorized distributors in a 1.6 mm x 1.6 mm SOT-563 package, priced at $0.65 each in 1,000-unit quantities.

Pre-release samples of the push-pull TLV4041 and open-drain TLV4021 comparators are available now through the TI store and authorized distributors in a tiny 0.73 mm x 0.73 mm DSBGA package, priced at $0.39 each in 1,000-unit quantities.