The LTA77 is a 44-V micro-power alternative to the industry-standard OP77/OP07 precision amplifiers. The LTA77 offer outstanding dc precision and ac performance, including 25 μV ultralow offset, below 0.3 μV/°C drift over temperature, 0.5 μVP-P input voltage noise and 0.9 MHz bandwidth. External offset trimming is not required in the majority of circuits.
A PSRR of 3 μV/V (110 dB) and CMRR of 1.0 μV/V (120 dB) maximum virtually eliminate errors caused by power supply drifts and common-mode signals. This combination of outstanding characteristics makes the LTA77 ideally suited for high resolution instrumentation and other tight error budget systems.
The robust design of the LTA77 provides ease-of-use to the circuit designer: integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electro-static discharge (ESD) protection. The LTA77 is optimized for operation at voltages from +6 V (±3 V) to +44 V (±22 V) over the extended temperature range of −40 °C to +125 °C

Advantages And Characteristics

  • Offset Voltage: 25 μV Maximum (LTA77E)
  • Offset Voltage Drift: 0.3 μV/°C Maximum (LTA77E)
  • 0.1 to 10 Hz Noise: 0.5 μVP-P
  • High Common-Mode Rejection: 0.1 μV/V (140 dB)
  • Wide Supply: ±3 V to ±22 V, 6 V to 44 V
  • Wide Bandwidth: 0.9 MHz
  • High Slew Rate: 0.48 V/μs
  • Low Quiescent Current: 1 mA per Amplifier
  • EMI/RFI Filtered Inputs


  • Replaces OP07/OP77/OP97/OP177 with Improved Performance
  • High-Side and Low-Side Current Sensing
  • Multiplexed Data-Acquisition Systems
  • Test and Measurement Equipment
  • High-Resolution ADC Driver Amplifiers
  • SAR ADC Reference Buffers
  • Programmable Logic Controllers
  • High Precision Comparator
Friendship Link Baidu