The LT ®1494/LT1495/LT1496 are the lowest power (IS ≤ 1.5µA) op amps with precision specifications. The extremely low supply current is combined with excellent amplifier specifications: input offset voltage is 375µV maximum with a typical drift of only 0.4µV/°C, input offset current is 100pA maximum. A minimum open-loop gain (AVOL) of 100V/mV ensures that gain errors are small. The device characteristics change little over the supply range of 2.2V to ±15V. Supply rejection is 90dB and the common mode rejection ratio is 90dB. Operation is specified for 3V, 5V and ±15V supplies. Reverse battery protection (–18V␣min) and inputs that operate above the positive supply make the LT1494/LT1495/LT1496 easy to use in harsh environments. The low bias currents and offset current of the amplifier permit the use of megohm level source resistors without introducing significant errors.
The LT1494, LT1495, and LT1496 are ultra‑low‑power, rail‑to‑rail input and output operational amplifiers with supply currents as low as 1.5 µA. They offer low offset voltage (375 µV max), low input bias current (250 pA typical), and high voltage gain (≥100 V/mV). Their wide supply range of 2.2 V to 36 V and operating temperature range of –40 °C to 125 °C make them suitable for battery‑powered and harsh‑environment applications.
Typical applications include battery‑ or solar‑powered systems, portable instrumentation, remote‑sensor amplifiers, and micropower filters. The devices are offered in several packages (8‑Pin MSOP, PDIP, and SO) and are protected against reverse battery voltage down to –18 V.
| Supply Current (max) | 1.5 µA |
|---|---|
| Input Offset Voltage (typical, 5 V supply) | 375 µV |
| Input Bias Current (typical) | 250 pA |
| Output Voltage Swing Low (typical, no load) | 100 mV |
| Gain‑Bandwidth Product (typical) | 27 kHz |
| Supply Voltage Range | 2.2 V to 36 V |
| Operating Temperature Range | –40 °C to 125 °C |
The devices draw up to 1.5 µA supply current.
The LT1494 is offered in 8‑Pin MSOP, PDIP, and SO packages.
Typical input offset voltage is 375 µV at a 5 V supply.
The LT1496 is guaranteed to operate from –40 °C to 125 °C.