OPA2244PA Equivalent & Substitute Parts

Part Overview

The OPA2244PA is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-DIP through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The OPA2244PA operates across a wide supply voltage range (2.2V to 36V) and maintains performance across industrial temperature ranges (-40°C to 85°C). Alternative equivalent parts are necessary due to product status transition and to support design flexibility across different packaging technologies and performance requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	430	kHz
Current - Input Bias	10	nA
Voltage - Input Offset	700	µV
Current - Supply (x2 Channels)	40	µA
Current - Output / Channel	25	mA
Voltage - Supply Span (Min)	2.2	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	8-DIP (0.300", 7.62mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the OPA2244PA is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: General Purpose
Number of Circuits: 2
Voltage Supply Range: Minimum 2.2V, Maximum 36V
Operating Temperature: -40°C to 85°C
Package Type: 8-DIP through-hole configuration
RoHS3 Compliance

Secondary Performance Parameters:

Slew Rate: 0.1V/µs (baseline specification)
Gain Bandwidth Product: 430 kHz (baseline specification)
Current - Input Bias: 10 nA (baseline specification)
Voltage - Input Offset: 700 µV (baseline specification)

Substitute parts are grouped into two categories:

Category 1: Direct Package Equivalents (8-DIP Through-Hole) Parts maintaining identical through-hole DIP packaging with matching electrical specifications within acceptable tolerance ranges. These include LT1211ACN8#PBF, LT1211CN8#PBF, LT1213ACN8#PBF, LT1215ACN8#PBF, LT1215CN8#PBF, and LT1492CN8#PBF.

Category 2: Package Alternative (Surface Mount) OPA2244UA/2K5 provides electrical equivalence with identical performance parameters but utilizes 8-SOIC surface-mount packaging, suitable for applications requiring SMD assembly.

Category 3: Functional Alternatives (Different Amplifier Topology) AD812ANZ and AD828ANZ represent functional alternatives with different feedback topologies (current feedback and voltage feedback respectively) and enhanced bandwidth characteristics, suitable for applications requiring higher-frequency performance.

Parameter Comparison

Parameter	OPA2244PA	OPA2244UA/2K5	LT1211ACN8#PBF	LT1213ACN8#PBF	LT1215ACN8#PBF	LT1492CN8#PBF	AD812ANZ	AD828ANZ
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Number of Circuits	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	0.1	0.1	7	12	50	3	1600	450
Gain Bandwidth Product (kHz)	430	430	14000	28000	23000	5000	—	—
Current - Input Bias (nA)	10	10	45	70	420	45	—	—
Voltage - Input Offset (µV)	700	700	125	125	125	120	—	—
Current - Supply (µA, x2 Channels)	40	40	1800	3400	4750	500	4500	14000
Current - Output / Channel (mA)	25	25	50	50	50	55	50	50
Voltage - Supply Span Min (V)	2.2	2.2	2.5	2.5	2.5	2.5	2.4 (±1.2)	5 (±2.5)
Voltage - Supply Span Max (V)	36	36	36	36	36	36	36 (±18)	36 (±18)
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70	0 to 70	—	—
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP	8-SOIC	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP	8-DIP
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Performance Profile):

OPA2244UA/2K5 is the manufacturer-recommended equivalent when surface-mount assembly is acceptable. This part maintains all electrical specifications of the OPA2244PA while offering Active product status and continued availability. Both parts share identical performance parameters and RoHS3 compliance.

For Through-Hole DIP Packaging Requirement:

When 8-DIP through-hole mounting is mandatory, the LT1211ACN8#PBF and LT1211CN8#PBF series provide general-purpose amplification with Active product status. These parts operate within the required supply voltage range (2.5V to 36V) and temperature range (-40°C to 85°C), with RoHS3 compliance. Performance characteristics differ in slew rate and gain bandwidth product, reflecting enhanced specifications.

LT1213ACN8#PBF and LT1215ACN8#PBF offer increased slew rate performance (12V/µs and 50V/µs respectively) for applications requiring faster transient response, while maintaining 8-DIP packaging and RoHS3 compliance. Temperature range for LT1215 variants is limited to 0°C to 70°C.

LT1492CN8#PBF provides ultra-low supply current operation (500µA total) suitable for battery-powered applications, with 8-DIP packaging and Active status.

For High-Frequency Applications:

AD812ANZ (current feedback topology, 1600V/µs slew rate, 145 MHz bandwidth) and AD828ANZ (voltage feedback topology, 450V/µs slew rate, 130 MHz bandwidth) represent functional alternatives for applications requiring significantly enhanced bandwidth and slew rate performance. Both maintain 8-DIP through-hole packaging, RoHS3 compliance, and Active product status. Supply voltage requirements differ: AD812ANZ supports 2.4V minimum (±1.2V dual), while AD828ANZ requires 5V minimum (±2.5V dual).

Compliance Verification:

All substitute parts listed maintain ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification, matching the regulatory profile of the OPA2244PA.

Frequently Asked Questions (FAQ)

Q: Can OPA2244UA/2K5 replace OPA2244PA in existing through-hole PCB designs?

A: No. OPA2244UA/2K5 uses 8-SOIC surface-mount packaging (0.154" width) versus OPA2244PA's 8-DIP through-hole package (0.300" width). PCB layout and footprint modifications are required. For through-hole designs, select LT1211ACN8#PBF or equivalent DIP-packaged alternatives.

Q: What is the primary reason to substitute OPA2244PA?

A: OPA2244PA carries Last Time Buy status, indicating production discontinuation. Active-status alternatives ensure long-term supply availability and design continuity.

Q: Are LT1211, LT1213, and LT1215 series interchangeable?

A: All three series maintain 8-DIP through-hole packaging, dual-circuit configuration, and 2.5V to 36V supply range. However, they differ in slew rate, gain bandwidth product, and supply current. Verify application requirements for transient response and power consumption before substitution.

Q: What is the temperature range limitation for LT1215 variants?

A: LT1215ACN8#PBF and LT1215CN8#PBF operate from 0°C to 70°C, compared to OPA2244PA's -40°C to 85°C range. These parts are unsuitable for applications requiring full industrial temperature coverage.

Q: When should AD812ANZ or AD828ANZ be selected?

A: These parts employ different amplifier topologies (current feedback and voltage feedback) and deliver significantly higher bandwidth (145 MHz and 130 MHz respectively) and slew rate (1600V/µs and 450V/µs). Select these only when application requirements exceed the 430 kHz gain bandwidth product of OPA2244PA. Verify supply voltage compatibility: AD812ANZ minimum 2.4V, AD828ANZ minimum 5V.

Q: Is LT1492CN8#PBF suitable for low-power applications?

A: Yes. LT1492CN8#PBF operates at 500µA total supply current (x2 channels), significantly lower than OPA2244PA's 40µA specification. However, operating temperature is limited to 0°C to 70°C, and gain bandwidth product is reduced to 5 MHz. Verify application bandwidth requirements before selection.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 Compliant and REACH Unaffected, matching OPA2244PA's regulatory status.

Q: What packaging options are available for OPA2244 base product?

A: OPA2244PA is supplied in 8-DIP through-hole (Tube packaging). OPA2244UA/2K5 is supplied in 8-SOIC surface-mount (Cut Tape & Digi-Reel packaging). Select based on assembly technology requirements.

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