ROHM has released the smallest CMOS OP Amp that achieves miniaturization and high precision, and is expected to alleviate the concerns of developers of smartphones and small IoT devices.

ROHM announced on the 30th that it has developed the 'TLR377GYZ', an ultra-small package CMOS OP Amp optimized for amplifying sensor signals that detect and measure temperature, pressure, flow rate, etc. in smartphones and small IoT devices.

The new product achieves both miniaturization and high precision, which were generally difficult to realize with OP Amps, by further advancing the circuit design technology, process technology, and package technology that ROHM has accumulated so far.

Input offset voltage and noise generation are error factors for OP Amps. These factors are related to amplification precision; while they can be suppressed by increasing the size of the built-in transistors, it becomes difficult to miniaturize the OP Amp itself.

ROHM has achieved a low input offset voltage of up to 1mV while maintaining the transistor device size by incorporating a circuit that corrects the offset voltage through proprietary circuit design technology.

At the same time, through proprietary process technology, flicker noise was improved and resistance components were improved from the device level, thereby realizing ultra-low noise with an input-referenced noise voltage density of 12 nV/√Hz.

In addition, through proprietary packaging technology, a WLCSP (Wafer Level Chip Size Package) with a ball pitch reduced to 0.3mm was adopted, achieving a size reduction of approximately 69% compared to existing products and approximately 46% compared to existing small products.

Mass production of the new product began in May 2024 with a production capacity of 100,000 units per month.