AD549KHZ Equivalent & Substitute Parts

Part Overview

The AD549KHZ is a general purpose operational amplifier manufactured by Analog Devices Inc., housed in a TO-99-8 metal can package for through-hole mounting. This device is classified as a linear amplifier with a single circuit configuration and is currently in active product status. The AD549KHZ serves applications requiring precision amplification with low input bias current and moderate bandwidth characteristics. Substitute parts are identified when equivalent functional performance can be achieved through alternative packaging, mounting technology, or enhanced electrical specifications while maintaining compatibility with the application requirements.

Substiute Parts

AD549KHZ

Analog Devices Inc.In Stock: 1645AD549KHZ Datasheet

Current PartRFQ

ADA4530-1ARZ

Analog Devices Inc.In Stock: 2774ADA4530-1ARZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD549KHZ is determined by functional equivalence across the following critical parameters: amplifier type classification, number of circuits, and core electrical specifications including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range. The AD549KHZ operates within a supply voltage span of 10 V to 36 V with an operating temperature range of 0°C to 70°C.

The ADA4530-1ARZ is identified as a substitute part based on matching amplifier type (general purpose) and circuit count (1 circuit). However, this substitute introduces differences in packaging technology (surface mount 8-SOIC versus through-hole TO-99-8), output type (rail-to-rail versus standard), and electrical performance characteristics. The ADA4530-1ARZ operates within a reduced supply voltage span of 4.5 V to 16 V and an extended operating temperature range of -40°C to 125°C.

Substitution is valid when the application requirements permit acceptance of the following parameter variations: reduced slew rate (1.4 V/µs versus 3 V/µs), increased gain bandwidth product (2 MHz versus 1 MHz), improved input bias current (0.02 pA versus 0.075 pA), improved input offset voltage (8 µV versus 150 µV), increased supply current (900 µA versus 600 µA), reduced output current capability (15 mA versus 20 mA), and modified supply voltage operating range.

Parameter Comparison

Engineering Selection Recommendations

Both the AD549KHZ and ADA4530-1ARZ are active products manufactured by Analog Devices Inc. and maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection.

The AD549KHZ is the primary selection for applications requiring through-hole mounting technology, higher slew rate performance (3 V/µs), extended supply voltage range (10 V to 36 V), and higher output current capability (20 mA per channel).

The ADA4530-1ARZ serves as a functional substitute for applications compatible with surface mount assembly, rail-to-rail output capability, lower supply voltage operation (4.5 V to 16 V), extended operating temperature range (-40°C to 125°C), and improved input offset voltage specification (8 µV). This substitute is suitable when the reduced slew rate (1.4 V/µs), increased supply current (900 µA), and reduced output current (15 mA) are acceptable within the application design constraints.

Frequently Asked Questions (FAQ)

Q: Can the ADA4530-1ARZ directly replace the AD549KHZ in an existing circuit board design?

A: Direct replacement requires evaluation of mounting technology compatibility. The AD549KHZ uses through-hole TO-99-8 packaging, while the ADA4530-1ARZ uses surface mount 8-SOIC packaging. Board layout and assembly process modifications are necessary. Additionally, the supply voltage range differs (10 V to 36 V for AD549KHZ versus 4.5 V to 16 V for ADA4530-1ARZ), requiring verification that the application operates within the ADA4530-1ARZ supply range.

Q: What are the key electrical differences between these parts?

A: The AD549KHZ provides higher slew rate (3 V/µs versus 1.4 V/µs) and higher output current capability (20 mA versus 15 mA). The ADA4530-1ARZ offers improved input offset voltage (8 µV versus 150 µV), lower input bias current (0.02 pA versus 0.075 pA), higher gain bandwidth product (2 MHz versus 1 MHz), and rail-to-rail output capability. Supply current is higher in the ADA4530-1ARZ (900 µA versus 600 µA).

Q: Is the ADA4530-1ARZ suitable for high-voltage applications?

A: No. The ADA4530-1ARZ maximum supply voltage is 16 V, compared to 36 V for the AD549KHZ. Applications requiring supply voltages above 16 V must use the AD549KHZ or identify alternative parts with higher voltage ratings.

Q: What is the operating temperature difference between these parts?

A: The AD549KHZ operates from 0°C to 70°C, while the ADA4530-1ARZ operates from -40°C to 125°C. The ADA4530-1ARZ provides extended temperature range capability suitable for industrial and automotive applications requiring operation below 0°C or above 70°C.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the AD549KHZ and ADA4530-1ARZ are ROHS3 compliant, REACH unaffected, and carry moisture sensitivity level 1 (unlimited), meeting current environmental and regulatory standards.

Q: Which part should be selected for new designs?

A: For new designs, evaluate the specific application requirements for supply voltage range, operating temperature, mounting technology, slew rate, and output current. The ADA4530-1ARZ is recommended for modern surface mount assembly processes and applications requiring extended temperature operation. The AD549KHZ remains suitable for through-hole designs and applications requiring higher supply voltage or slew rate performance.