AD526AD

Instrumentation, Op Amps, Buffer Amps Overview

The AD526AD is a monolithic software programmable gain amplifier from Analog Devices, housed in a 16-lead hermetic side-brazed ceramic DIP package. It provides digitally programmable binary gains of 1, 2, 4, 8, and 16 via TTL-compatible inputs. Designed for industrial applications, it operates within a temperature range of -40°C to +85°C using dual supplies between ±4.5V and ±16.5V. The device features a FET input stage with low bias current and laser-trimmed accuracy.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Digitally programmable binary gains ranging from 1 to 16
• Two-chip cascade mode capability achieves binary gain up to 256
• Laser trimming technology ensures excellent DC precision and low gain error
• TTL-compatible digital inputs allow direct interface with logic circuits

Instrumentation, Op Amps, Buffer Amps Applications

• Dynamic range extension for analog-to-digital converter systems
• Gain ranging preamplifiers requiring precise binary step control
• High accuracy data acquisition systems with floating-point conversion
• Precision instrumentation applications demanding low nonlinearity

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific grade requirements against the ordering guide, as the AD526AD denotes an industrial grade ceramic package. Confirm supply voltage ranges and temperature specifications match the design constraints. Check for availability of compatible evaluation boards or replacement components due to potential lifecycle status changes.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the AD526AD when industrial temperature stability and hermetic packaging are required. Compare gain error and offset voltage specifications against other grades like the commercial JN variant. Ensure the system can accommodate the necessary dual power supplies and TTL logic levels for control signals.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the AD526 family of software programmable gain amplifiers. It shares core functionality with variants such as the AD526JN and AD526CD but differs in package type and specified operating temperature range. The family utilizes laser trimming for precision and supports cascading for extended gain ranges.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Official substitutes include other grades within the AD526 series such as the AD526JN, AD526BD, or AD526CD. Verify that the alternative part number matches the required package style and temperature rating before implementation.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the AD526 achieve gains higher than 16?

By cascading two AD526 units, the device can achieve binary weighted gains from 1 to 256. This is accomplished by connecting the B pin of the second amplifier to control the overall gain scaling.

What is the difference between latched and transparent modes?

In latched mode, the gain code is stored in internal registers upon clocking, holding the state until updated. In transparent mode, the output responds directly to level changes at the gain code inputs without storage.