AD8602ARMZ

Overview

The AD8602ARMZ is a dual precision CMOS operational amplifier featuring rail-to-rail input and output capabilities. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a typical supply current of 750 µA per amplifier. Key electrical specifications include a maximum offset voltage of 500 µV, a gain bandwidth product of 8 MHz, and a slew rate of 5 V/µs. The device utilizes DigiTrim technology for post-assembly offset correction and is qualified for automotive applications.

Feature Summary

• Rail-to-rail input and output architecture maximizes dynamic range in single-supply systems.
• DigiTrim technology provides superior DC precision without laser trimming.
• Low input bias current enables use in high source impedance applications.
• No phase reversal ensures stable operation during overload conditions.

Applications

• Current sensing
• Barcode scanners
• PA controls
• Battery-powered instrumentation
• Multipole filters

Procurement Notes

Verify the specific grade (A or D) required for your application, as offset voltage specifications vary between grades. Confirm that the 8-lead MSOP package matches your PCB footprint requirements. Ensure the operating temperature range of -40°C to +125°C aligns with your system's environmental constraints before finalizing procurement.

Selection Notes

Select this component when both high precision and wide signal bandwidth are required in a single-supply environment. The rail-to-rail I/O capability makes it suitable for interfacing directly with CMOS ADCs and DACs. Consider the A grade for stricter offset voltage limits or the D grade for cost-sensitive designs where slightly higher offset is acceptable.

Part Context

This part belongs to the AD860x family of precision amplifiers, which includes single (AD8601), dual (AD8602), and quad (AD8604) configurations. All variants share identical electrical characteristics and utilize the same patented DigiTrim process. The AD8602 specifically integrates two independent amplifiers in an 8-lead surface-mount package, offering a compact solution for multi-channel signal processing tasks.

Replacement Considerations

Direct functional replacements within the same family include the AD8601ARZ (single channel) and AD8604ARZ (quad channel). For pin-compatible alternatives with similar specifications, verify compatibility with other rail-to-rail CMOS op-amps from Analog Devices, ensuring input/output swing and offset voltage parameters meet design requirements.

FAQ

How does the AD8602 handle input voltages exceeding the supply rails?

The device features input overvoltage protection. If the input voltage exceeds the supply by more than 0.3 V, internal PN junctions conduct. This current must be limited to 5 mA or less using a series resistor to prevent damage.

What is the recovery time from an overload condition?

The output recovers from the positive supply rail within 200 ns at all supply voltages. Recovery from the negative rail is within 500 ns at a 5 V supply and decreases to within 350 ns at 2.7 V.