LTA77中文资料运算放大器数据手册Linearin规格书

描述 Description

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

特性 Features

• 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

应用 Application

• 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