ALD4704APBL

Overview

The ALD4704APBL is a quad rail-to-rail CMOS operational amplifier manufactured by Advanced Linear Devices. It features a 5.0 V/µs slew rate, 2.1 MHz unity gain bandwidth, and symmetrical push-pull output drive. The device operates on dual supplies from ±3.25V to ±5.0V or single supplies up to 10V. Input bias current is typically 1.0 pA with a maximum of 20 pA at 25°C. It offers rail-to-rail input and output voltage ranges, settling to within 60mV of the supply rails under rated load. The component is housed in a 14-pin Small Outline Plastic DIP (SOIC) package.

Feature Summary

• Rail-to-rail input and output voltage ranges allow signal swings close to power supply limits.
• Complementary push-pull output stage provides symmetrical sourcing and sinking capabilities.
• Internal frequency compensation ensures unity gain stability without external components.
• High capacitive load capability supports driving loads up to 4000pF at a gain of 5.

Applications

• Voltage follower/buffer circuits
• Photodiode amplifiers
• Data acquisition systems
• Active filters
• Sample/Hold amplifiers

Procurement Notes

Verify that the ordering suffix 'PBL' corresponds to the 14-pin SOIC package and lead-free (RoHS) compliance as specified in the manufacturer's ordering information. Confirm the operating temperature range matches the SBL/PBL specification of 0°C to +70°C rather than the DB package range. Ensure static control procedures are followed during handling due to ESD sensitivity.

Selection Notes

Select this component for applications requiring low operating voltages such as 9V battery or ±3.25V to ±5V supplies. It serves as an alternative to J-FET input amplifiers where lower cost and high reliability are prioritized. The rail-to-rail feature expands signal voltage range, allowing multiple analog serial stages without losing operating voltage margin. Consider the 1.0 pA typical input bias current for high source impedance applications.

Part Context

The ALD4704 series includes variants ALD4704A, ALD4704B, and ALD4704, differentiated primarily by input offset voltage specifications. The ALD4704APBL specifically denotes the standard version packaged in a 14-pin SOIC with lead-free construction. This family is designed using an enhanced ACMOS silicon gate process, offering robust performance in temperature-extreme environments and rugged conditions.

Replacement Considerations

Public confirmed substitute part numbers: None available in source material.