Precision, Single Supply Op Amp

The LT1006 is the first precision single supply operational amplifier. Its design has been optimized for single supply operation with a full set of specifications at 5V. Specifications at ±15V are also provided.

The LT1006 has a low offset voltage of 20µV, drift of 0.2µV/°C, offset current of 120pA, gain of 2.5 million, common mode rejection of 114dB and power supply rejection of 126dB.

Although supply current is only 340µA, a novel output stage can source or sink in excess of 20mA while retaining high voltage gain. Common mode input range includes ground to accommodate low ground-referenced inputs from strain gauges or thermocouples, and output can swing to within a few millivolts of ground. If a higher slew rate (in excess of 1V/µs) or micropower operation (supply current down to 90µA) is required, the operating currents can be modified by connecting an external optional resistor to Pin 8.

For similar single supply precision dual and quad op amps, please see the LT1013/LT1014 datasheet. For micropower dual and quad op amps, please see the LT1078/LT1079 data sheet.

Applications

* Low Power Sample and Hold Circuits

* Battery Powered Precision Instrumentation

* Strain Gauge Signal Conditioners

* Thermocouple Amplifiers

* 4mA to 20mA Current Loop Transmitters

* Active Filters

* Single Supply Operation

* Input Voltage Range Extends to Ground

* Output Swings to Ground while Sinking Current

* Guaranteed Offset Voltage: 50µV Max

* Guaranteed Low Drift: 1.3µV/°C Max

* Guaranteed Offset Current: 0.5nA Max

* Guaranteed High Gain

* 5mA Load Current: 1.5 Million Min

* 17mA Load Current: 0.8 Million Min

* Guaranteed Low Supply Current: 520µA Max

* Supply Current can be Reduced by a Factor of 4

* Low Voltage Noise, 0.1Hz to 10Hz: 0.55µVP-P

* Low Current Noise—Better than OP-07: 0.07pA/√Hz at 10Hz

* High Input Impedance: 250MΩ Min

* Minimum Supply Voltage: 2.7V Min