Datasheet LT1078, LT1079 (Analog Devices) - 10

LT1078/LT1079
W U TYPICAL PERFORMANCE CHARACTERISTICS Small-Signal Transient Response Small-Signal Transient Response VS = 5V, 0V VS =
±
2.5V
0.1V 0V 20mV/DIV 20mV/DIV AV = 1 10μs/DIV AV = 1 10μs/DIV CL = 15pF CL = 15pF INPUT 50mV TO 150mV LT1078/79 • TPC24 LT1078/79 • TPC25
Small-Signal Transient Response VS =
±
15V
0V 20mV/DIV AV = 1 10μs/DIV CL = 15pF LT1078/79 • TPC26
U U W U APPLICATIONS INFORMATION
The LT1078/LT1079 devices are fully specified with A full set of specifications is also provided at ±15V supply V + = 5V, V – = 0V, VCM = 0.1V. This set of operating voltages for comparison with other devices and for com- conditions appears to be the most representative for pleteness. battery-powered micropower circuits. Offset voltage is internally trimmed to a minimum value at these supply
Single Supply Operation
voltages. When 9V or 3V batteries or ±2.5V dual supplies The LT1078/LT1079 are fully specified for single supply are used, bias and offset current changes will be minimal. operation, i.e., when the negative supply is 0V. Input Offset voltage changes will be just a few microvolts as common mode range goes below ground and the output given by the PSRR and CMRR specifications. For example, swings within a few millivolts of ground while sinking if PSRR = 114dB (= 2μV/V), at 9V the offset voltage change current. All competing micropower op amps either cannot will be 8μV. Similarly, VS = ±2.5V, VCM = 0V is equivalent swing to within 600mV of ground (OP-20, OP-220, OP-420) to a common mode voltage change of 2.4V or a VOS or need a pull-down resistor connected to the output to swing change of 7μV if CMRR = 110dB (3μV/V). to ground (OP-90, OP-290, OP-490, HA5141/42/44). This 10789fe 10