-Low Input Offset Voltage and Noise Contribute to
Higher Accuracy in Sensor Circuits-
KYOTO,
Japan, Aug. 1, 2024 /PRNewswire/ -- ROHM Co.,
Ltd. has developed an ultra-compact 1.8V to 5V rail-to-rail CMOS
operational amplifier (op amp), the TLR377GYZ, which is the
smallest in the industry as of August 1,
2024 (ROHM study). It is optimized for amplifying signals
from sensors such as temperature, pressure, and flow rate as well
as in smartphones, small IoT devices, and similar applications.
The size of smartphones and IoT devices continues to decrease,
requiring smaller components. To accurately amplify small signals
as needed in high-precision sensing, op amps must improve low input
offset voltage and noise performance while continuing to shrink the
form factor.
The TLR377GYZ successfully balances miniaturization with high
accuracy (a challenge for conventional op amps) by further evolving
proprietary circuit design, process, and packaging technologies
cultivated over many years.
Op amps' input offset voltage and noise generation degrade
amplification accuracy and can be suppressed by increasing the size
of built-in transistors, but at the expense of miniaturization. In
response, ROHM developed proprietary circuits which achieve a
maximum offset voltage as low as 1mV without increasing the size of
transistors with greatly reducing flicker noise, while ultra-low
noise is achieved with an input equivalent noise voltage density of
12 nV/square root Hertz by optimizing the resistive components at
the element level. Furthermore, the new product adopts a WLCSP
(Wafer Level Chip Scale Package) with a ball pitch of just 0.3mm,
utilizing original packaging technology. This reduces size by
approximately 69% compared to conventional products and 46% over
existing compact products.
Image:
https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202407193832/_prw_PI1fl_Lw8R2Z61.jpg
The IC-mounted conversion board that can replace SSOP6 packages
is also offered to support replacement considerations and initial
evaluation. Both the new product and conversion board are available
for purchase through online distributors. Additionally, the
high-accuracy SPICE model, called ROHM Real Model, is available on
ROHM's website for verification simulations.
Product page:
https://www.rohm.com/products/amplifiers-and-linear/operational-amplifiers/high-performance/input-output-rail-to-rail-low-offset-voltage/tlr377gyz-product
Going forward, in addition to greater miniaturization and
accuracy, ROHM will enhance op amp performance by reducing power
consumption using proprietary ultra-low current consumption
technology.
Release:
https://www.rohm.com/news-detail?news-title=2024-08-01_news_opamp&defaultGroupId=false
Product Image:
https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202407193832/_prw_PI2fl_C3600208.jpg
About ROHM:
https://kyodonewsprwire.jp/attach/202407193832-O1-W0Of9M06.pdf
Logo:
https://cdn.kyodonewsprwire.jp/prwfile/release/M106254/202407193832/_prw_PI3fl_847u7p5x.jpg
Official website: https://www.rohm.com/
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content:https://www.prnewswire.com/news-releases/rohm-develops-industrys-smallest-cmos-op-amp-optimized-for-smartphones-and-iot-devices-302211786.html
SOURCE ROHM Co., Ltd.