The LT1678/LT1679 is a low noise, precision op amp with single supply operation, input and output range of 100mV over supply voltage, low input bias current, high voltage gain, high common mode rejection ratio and high power supply rejection ratio
The LT1678 and LT1679 are dual/quad rail‑to‑rail operational amplifiers offering very low noise (3.9 nV/√Hz at 1 kHz) and high precision (typical 100 µV offset). They operate from a single supply of 2.7 V to 36 V and can swing within 170 mV of either rail.
Typical applications include strain‑gauge amplifiers, portable microphones, battery‑powered instrumentation, low‑noise signal processing, microvolt‑accuracy threshold detection, and infrared detectors. The devices are supplied in 8‑lead SO and 14‑lead SOQ packages with full matching specifications for instrumentation‑amplifier designs.
| Supply Voltage Range | 2.7 V to 36 V |
|---|---|
| Gain Bandwidth Product | 20 MHz |
| Typical Input Offset Voltage | 100 µV |
| Typical Input Bias Current | 20 nA |
| Slew Rate | 4‑6 V/µs |
| Supply Current per Amplifier | 34 mA |
| Output Voltage Swing Low | 170 mV from rail |
The devices operate from a single supply of 2.7 V up to 36 V.
Typical input offset voltage is 100 µV.
The gain‑bandwidth product is 20 MHz.
They are used in strain‑gauge amplifiers, portable microphones, battery‑powered instrumentation, low‑noise signal processing, microvolt‑accuracy threshold detection, and infrared detectors.