ALD1702ASAL

Overview

The ALD1702ASAL is a monolithic precision operational amplifier manufactured using ACMOS silicon gate CMOS technology. It features rail-to-rail input and output voltage ranges, making it suitable for +5V single supply or ±2.5V dual supply systems. The device offers a unity gain bandwidth of 1.5MHz typical, a slew rate of 2.1V/µs typical, and extremely low input bias current of 1.0pA typical. It provides high voltage gain (85V/mV at ±2.5V) and drives up to 400pF capacitive loads in non-inverting unity gain configurations. Operating temperature range is 0°C to +70°C.

Feature Summary

• Rail-to-rail input and output voltage ranges enable implementation of numerous analog serial stages without losing operating voltage margin.
• Extremely low input bias currents (1.0pA typical) make the device ideal for high source impedance applications.
• Internally compensated for unity gain stability without requiring external frequency compensation components.
• On-chip offset voltage trimming allows the device to be used without nulling in most applications.

Applications

• Voltage amplifier
• Photodiode amplifier
• Data acquisition systems
• Active filters
• Picoammeter

Procurement Notes

Verify the specific suffix 'SAL' corresponds to the 8-pin Small Outline Plastic Dip (SOIC) package with lead-free (RoHS) compliant pins as defined in the ordering information. Confirm that the operating temperature range requirement aligns with the commercial grade specification of 0°C to +70°C, distinct from the industrial DA package options. Ensure static control procedures are followed during handling due to ESD sensitivity.

Selection Notes

Select this component when designing circuits powered by +5V single supplies or ±2.5V dual supplies where rail-to-rail signal swing is required. It is appropriate for applications demanding high input impedance and low power dissipation. Consider the 1.5MHz bandwidth and 2.1V/µs slew rate for signal conditioning needs. Verify load capacitance requirements do not exceed the specified driving capabilities for stable operation.

Part Context

The ALD1702ASAL belongs to the ALD1702 family of precision operational amplifiers from Advanced Linear Devices. This series includes variants like the ALD1702B and ALD1703, sharing similar architectures but differing in offset voltage specifications. The family is designed to offer a balanced trade-off of performance parameters for mixed digital and analog 5V systems, maintaining pin compatibility with legacy µA741 and ICL7611 types.

Replacement Considerations

The datasheet notes pin configuration compatibility with µA741 and ICL7611 types. However, electrical characteristics such as input bias current and rail-to-rail operation differ significantly. No direct public substitute part numbers are listed in the provided documentation.

FAQ

Does the ALD1702ASAL require external frequency compensation?

No, the device is internally compensated for unity gain stability and does not require external frequency compensation components.

What is the maximum capacitive load the ALD1702ASAL can drive in a non-inverting unity gain connection?

The output stage can drive up to 400pF of capacitive load in a non-inverting unity gain connection.