Texas Instruments LPV821DBVR, Zero-Drift Amplifier, 1 Circuit, 8 kHz Gain Bandwidth, 0.0033 V/µs Slew Rate, Rail-to-Rail Output, 1.7 V to 3.6 V Supply, SOT-23-5 Package, -40°C to 125°C.
| Parameter | Value |
|---|---|
| Output type | Rail-to-Rail |
| Mounting | Surface Mount |
| Amplifier type | Zero-Drift |
| Voltage - input offset | 1.5 µV |
| Voltage - supply span | 3.6 V |
| Current - supply | 650nA |
| Current - input bias | 7 pA |
| Current - output (Channel) | 21 mA |
| Operating temperature | -40°C ~ 125°C (TA) |
| Gain bandwidth product | 8 kHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Slew rate | 0.0033V/µs |
| Case | SC-74A, SOT-753 |
| Number of circuits | 1 |
The 8 kHz gain-bandwidth product and 0.0033 V/µs slew rate confirm this is a DC-optimised amplifier: it will not track a 1 kHz sine wave cleanly, but it will hold a microvolt-level DC reading year after year with minimal drift.
Rail-to-rail output swing gives you the full ADC input range when the supply is tight.
No NRND or last-time-buy flags.
The closest functional second-source candidate is the TLV9351IDCKR, but that part is a general-purpose amplifier with 3.5 MHz GBW and 350 µV offset — a different performance tier. For a true zero-drift replacement with similar nanopower draw, the OPA333 (also zero-drift) is a common cross-shop, though its supply current is roughly 10× higher. No pin-compatible drop-in exists; verify the circuit's bandwidth and supply budget before swapping.
Yes — the 1.5 µV offset and 7 pA input bias make it well suited for precision sensor conditioning: thermocouple amplifiers, bridge transducers, photodiode front-ends, and battery-monitoring circuits. The 650 nA supply current keeps the signal chain alive in always-on sensing without draining the battery.
0.0033 V/µs. This is a DC-precision amplifier — it will not track audio or fast-changing signals. Use it for steady-state or slowly varying DC measurements.