• Product Introduction

LT1178S8 

17μA max, dual and quad, single-supply, precision op amp

peculiarity

• 17μA maximum supply current per amplifier
• 70μV maximum offset voltage
• 250pA maximum bias current
• 5nA maximum input bias current
• 0.9μVp-P 0.1Hz to 10Hz voltage noise
• 1.5pAp - P 0.1Hz to 10Hz current noise
• Offset voltage drift of 0.5μV/°C
• 85kHz gain bandwidth products
• 0.04V/μs slew rate
• Single-power operation
• The input voltage range includes ground potential
• output swing while absorbing current to ground
• There is no pull-down resistance
• Output source and sink 5 mA load current

description

™The LT 1178 is a micro-power dual op-amp in a standard 8-pin configuration The LT1179 is a micro-quad op-amp available in a standard 14-pin package. Both devices are optimized for 5V single-supply operation. The specifications are also available with ± 15V power supply.

The extremely low supply current is combined with true precision specifications: offset voltage of 30μV, offset currentis 50pA. These two offset parameters drift with low temperature. 1.5pAp - P-current noise and picoampere cancellation currently allow the use of megaohm-level source resistors without causing serious errors. Voltage noise, 0.9μVp-P, is very low supply current.

The LT1178 and LT1179 can be operated from a single power supply (one lithium battery or two nickel-cadmium batteries low). The input range is below ground. All NPN output stages fluctuate within a few millivolts of ground and a sinking currentno power pull-down resistor is necessary.

Three times higher supply current is acceptable, single micro LT1077, LT1078 dual and LT1079 four recommendations. The LT1077/78/79 has significantly higher bandwidth, slew rate, low voltage noise, and better output drive capability.