LT1057ISW

Instrumentation, Op Amps, Buffer Amps Overview

The LT1057ISW is a dual precision high-speed operational amplifier featuring JFET inputs, housed in a 16-lead plastic wide SO package. It operates within an ambient temperature range of -40°C to 85°C with ±15V supplies. Key electrical specifications include a minimum slew rate of 8 V/µs and a gain-bandwidth product of 3 MHz. The input offset voltage maximum is 0.7 mV, with a drift of up to 4 µV/°C. Supply current per amplifier is typically 2.8 mA.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• JFET input architecture providing picoampere bias currents and high input impedance
• Integrated phase reversal protection circuit preventing output lock-up during negative common-mode limit exceedance
• High-speed performance characterized by fast settling times and wide bandwidth capabilities
• Low voltage noise density suitable for precision signal conditioning applications

Instrumentation, Op Amps, Buffer Amps Applications

• Precision instrumentation amplifiers requiring high input impedance
• Fast and precise sample-and-hold circuits
• Photodiode amplifiers for low-light detection
• Voltage-to-frequency and frequency-to-voltage converters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix ISW corresponds to the 16-lead Wide SOIC package and industrial temperature grade (-40°C to 85°C). Confirm that the ordering suffix does not alter the internal pinout compared to standard DIP packages, as surface mount variants may differ. Ensure compatibility with existing board layouts regarding thermal dissipation and lead pitch dimensions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when replacing legacy bipolar or JFET op amps like the LF412A or OP-215 to achieve superior speed and precision. Consider the SW package pinout differences if migrating from through-hole designs. Evaluate the trade-off between the JFET input's lower transconductance and its resulting higher speed compared to bipolar alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the LT1057/LT1058 family of matched JFET input operational amplifiers. While the LT1057 provides dual channels, the LT1058 offers quad channels in a 14-pin configuration. Both share identical electrical characteristics and are designed to upgrade systems requiring high-speed operation alongside microvolt-level accuracy.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct socket replacement is supported for LF353, LF412, LF442, TL072, TL082, and OP-215 dual op amps. For quad configurations, it replaces LF347, LF444, TL074, and TL084 sockets. Verify pinout compatibility for surface mount transitions.