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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteROHM’s February 24, 2026 announcement adds 17 CMOS op amps across the TLRx728 and BD728x families, with rail-to-rail input and output specified for the lineup. For current-sensing designs where offset can affect measurement accuracy, the TLR728 is the lower-offset choice among the newly announced options: ROHM lists a maximum input offset of 150 µV at 25 °C for the single-channel TLR728YG-C, versus 1.6 mV at 25 °C for the BD7281YG-C. The devices also target sensor signal processing, motor-driver control and power-supply monitoring.
What ROHM announced
The February 24, 2026 announcement covers 17 CMOS op-amp devices in the TLRx728 and BD728x families. ROHM positions them for automotive, industrial and consumer equipment. The stated use cases include sensor signal processing, current detection, motor-driver control and power-supply monitoring. Rail-to-rail input and output are specified for the lineup.
The published figures below cover selected devices, not every one of the 17 parts. In particular, the detailed single-channel figures shown here are for TLR728YG-C and BD7281YG-C; channel-count examples are also given for two TLR variants.
TLRx728 and BD728x: what is different?
The clearest published distinction is input offset. In ROHM’s 2026 figures, the TLR728 has the lower maximum offset, while the BD7281 has a higher maximum offset. Both listed single-channel parts have the same typical noise density, typical slew rate, typical supply current and stated supply range.
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| Device | Channels | Maximum input offset | Typical noise density | Typical slew rate | Typical supply current | Supply range | Package |
|---|---|---|---|---|---|---|---|
| TLR728YG-C | 1 | 150 µV at 25 °C; 550 µV over all temperatures | 12 nV/√Hz at 1 kHz | 10 V/µs | 1.70 mA | 2.5–5.5 V | SSOP5 |
| BD7281YG-C | 1 | 1.6 mV at 25 °C; 2.0 mV over all temperatures | 12 nV/√Hz at 1 kHz | 10 V/µs | 1.70 mA | 2.5–5.5 V | SSOP5 |
These are manufacturer-published values, not measurements of a finished current-sensing circuit. The TLR728’s 150 µV figure is a maximum at 25 °C, not a typical value; its all-temperature maximum is 550 µV. Likewise, the BD7281’s maximum is 1.6 mV at 25 °C and 2.0 mV over all temperatures. For an accuracy budget across operating temperature, use the temperature-qualified maximum rather than comparing only the 25 °C values.
Channel-count options in the TLR family
| Device | Channels | Typical supply current | Package |
|---|---|---|---|
| TLR2728YFVM-C | 2 | 3.40 mA | MSOP8 |
| TLR4728YFV-C | 4 | 6.80 mA | SOP14 |
These current figures are typical for the named parts. They can help with an initial channel-density and power comparison, but do not establish the total power of a board, which also depends on operating conditions and the rest of the signal chain.
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Which ROHM op amp fits a current-sensing design?
Start with the error the amplifier can add to the measurement, then check whether its dynamic and electrical characteristics suit the circuit. For a shunt-based current-sensing path, a small input offset is generally useful because the shunt signal may be small; the offset is only one part of total measurement error, however. Shunt tolerance, gain-setting resistors, layout, common-mode conditions and temperature also affect the result.
- Set the offset and temperature requirement. Compare the maximum input offset across the intended operating range against the input-referred error your design can tolerate. On the published single-channel figures, TLR728YG-C has lower offset than BD7281YG-C. The announcement figures provided here do not state offset drift for either family, so do not infer drift from the 25 °C offset alone.
- Check noise for the signal level and bandwidth. ROHM lists 12 nV/√Hz typical noise density at 1 kHz for both named single-channel parts. This is a frequency-specific typical figure, not a complete prediction of integrated noise in a particular circuit; account for bandwidth, resistor noise and the rest of the measurement chain.
- Check dynamic response. Both named single-channel parts have a typical slew rate of 10 V/µs. Whether that is sufficient depends on the largest output transition and settling time required by the application; a slew-rate figure alone does not specify closed-loop bandwidth or settling performance.
- Confirm supply and input/output headroom. The named single-channel parts have a stated 2.5–5.5 V supply range, and ROHM specifies rail-to-rail input/output for the lineup. Rail-to-rail does not mean every input or output reaches both supply rails under every load and operating condition; check the relevant device specifications against the circuit’s common-mode and output-swing needs.
- Choose channel count and package around the board. The published TLR examples range from one channel in SSOP5 to two in MSOP8 and four in SOP14. Compare the exact device suffix and package against assembly, routing and board-area constraints.
- Verify the exact qualification and ordering suffix. If automotive qualification is required, confirm that the selected orderable part carries the qualification and temperature grade your program requires. The family-level announcement alone is not enough to establish qualification for every variant.
When a different ROHM op amp may be a better fit
LMR1002F-LB for lower stated offset and drift
ROHM’s 2024 specifications for the LMR1002F-LB list a 9 µV maximum input offset and 0.05 µV/°C maximum offset drift. ROHM describes it as a zero-drift op amp for accurate sensor amplification and current sensing as temperature changes, and specifies 2.7–5.5 V rail-to-rail operation. Those figures make it a relevant alternative when offset and drift are central constraints. They do not, by themselves, establish that it is the best choice for a particular circuit; compare its complete electrical specifications, channel needs and package with the design requirements.
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For a battery-powered design where amplifier current and footprint dominate, ROHM’s 2025 information lists the TLR1901GXZ at 160 nA typical circuit current, with a 1.7–5.5 V supply range. Its XCSP30L1 package measures 0.91 × 0.80 mm, with a maximum height of 0.33 mm. ROHM lists wearables, handheld measurement instruments and IoT environmental sensors as applications. This is a different trade-off from the TLRx728 and BD728x examples: the cited TLR1901 figure is aimed at low-current sensing, while the newer single-channel parts’ stated typical supply current is 1.70 mA.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where to look for parts and availability
For the 2026 parts, search by the full orderable part number—for example, “ROHM TLR728YG-C CMOS op amp”—and verify the package and suffix before ordering. The figures above do not establish regional inventory, price, or the availability of every device in the 17-part lineup, so check ROHM’s current product information and the distributor listing for the exact part you need.
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ROHM names DigiKey and Mouser in its online-sales information for the TLR1901GXZ-E2 and lists the TLR1901GXZ-EVK-001 adapter board. That sourcing information applies to the named TLR1901 product and evaluation accessory; it should not be taken as confirmation of stock or sales channels for the TLRx728 or BD728x families.
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