INA122PAG4 Equivalent & Substitute Parts

Part Overview

The INA122PAG4 is an instrumentation amplifier manufactured by Texas Instruments, featuring a single circuit in an 8-PDIP through-hole package. This device is classified as Last Time Buy, indicating limited future availability. The INA122PAG4 operates across a wide supply voltage range of 2.2V to 36V and is suitable for precision measurement applications requiring low input bias current and low input offset voltage. Due to its Last Time Buy status, identifying equivalent and substitute parts is necessary for design continuity and long-term component sourcing strategy.

Substiute Parts

INA122PAG4

Texas InstrumentsIn Stock: 1043INA122PAG4 Datasheet

Current PartRFQ

INA122UA/2K5

Texas InstrumentsIn Stock: 17694INA122UA/2K5 Datasheet

MFR RecommendedRFQ

INA122PA

Texas InstrumentsIn Stock: 4050INA122PA Datasheet

MFR RecommendedRFQ

AD627ANZ

Analog Devices Inc.In Stock: 1267AD627ANZ Datasheet

MFR RecommendedRFQ

AD627BNZ

Analog Devices Inc.In Stock: 1414AD627BNZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the INA122PAG4 is determined by the following critical parameters:

Electrical Compatibility Parameters:

• Amplifier Type: Instrumentation
• Number of Circuits: 1
• Supply Voltage Range: 2.2V to 36V minimum
• Operating Temperature Range: -40°C to 85°C
• Slew Rate: 0.16V/µs or greater
• Bandwidth: 120 kHz or greater
• Input Bias Current: 10 nA or lower
• Input Offset Voltage: 150 µV or lower
• Output Current: 30 mA or greater

Mechanical Compatibility Parameters:

• Mounting Type: Through Hole
• Package Type: 8-DIP (0.300", 7.62mm)

Regulatory Compliance:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

Substitute parts must satisfy all electrical parameters within the specified ranges and maintain identical through-hole 8-DIP packaging. Parts meeting these criteria are functionally interchangeable in circuit designs utilizing the INA122PAG4.

Parameter Comparison

Engineering Selection Recommendations

Through-Hole Package Substitutes (Direct Pin-Compatible):

INA122PA, AD627ANZ, and AD627BNZ are direct mechanical substitutes for the INA122PAG4, all featuring 8-DIP through-hole packaging with identical pin spacing and footprint compatibility. These parts maintain the same operating temperature range and supply voltage specifications.

INA122PA is a Texas Instruments product with identical electrical specifications to the INA122PAG4, differing only in packaging format (Tube vs. standard DIP). Both are classified as Last Time Buy, indicating similar lifecycle status.

AD627ANZ and AD627BNZ are Analog Devices instrumentation amplifiers with enhanced performance characteristics. Both feature rail-to-rail output capability and lower input bias current (2 nA versus 10 nA) and lower input offset voltage (50 µV and 25 µV respectively versus 150 µV). However, both exhibit reduced slew rate (0.06V/µs versus 0.16V/µs) and reduced bandwidth (80 kHz versus 120 kHz). Both AD627 variants are Active status products, ensuring long-term availability.

Surface-Mount Alternative:

INA122UA/2K5 is a Texas Instruments instrumentation amplifier with identical electrical specifications to the INA122PAG4 but in 8-SOIC surface-mount packaging. This part is Active status and suitable for designs utilizing surface-mount assembly processes. Circuit board redesign is required for implementation.

Compliance Status:

All substitute parts are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes, matching the regulatory profile of the INA122PAG4.

Frequently Asked Questions (FAQ)

Q: Can AD627ANZ or AD627BNZ replace INA122PAG4 in existing designs?

A: AD627ANZ and AD627BNZ are mechanically compatible through-hole 8-DIP packages and electrically compatible within the specified supply voltage and temperature ranges. However, the reduced slew rate (0.06V/µs versus 0.16V/µs) and reduced bandwidth (80 kHz versus 120 kHz) may affect circuit performance in applications requiring higher frequency response or faster transient response. Circuit validation is necessary to confirm performance equivalence for specific applications.

Q: Is INA122UA/2K5 a direct replacement for INA122PAG4?

A: INA122UA/2K5 provides electrical equivalence but requires circuit board redesign due to different packaging. The INA122PAG4 uses through-hole 8-DIP mounting, while INA122UA/2K5 uses surface-mount 8-SOIC packaging. Pin-to-pin electrical functionality is identical, but physical board layout changes are mandatory.

Q: What is the difference between INA122PA and INA122PAG4?

A: INA122PA and INA122PAG4 are electrically and functionally identical instrumentation amplifiers from Texas Instruments. Both feature identical electrical specifications, operating temperature range, and supply voltage range. The primary difference is packaging format: INA122PAG4 is supplied in standard DIP packaging, while INA122PA is supplied in Tube packaging. Both are Last Time Buy status products.

Q: Why do AD627 parts have lower input offset voltage than INA122PAG4?

A: AD627ANZ specifies 50 µV input offset voltage and AD627BNZ specifies 25 µV input offset voltage, compared to 150 µV for INA122PAG4. This represents improved precision performance in the Analog Devices AD627 series. Applications requiring lower input offset voltage can benefit from these alternatives, provided the reduced slew rate and bandwidth are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed—INA122PA, AD627ANZ, AD627BNZ, and INA122UA/2K5—are ROHS3 Compliant and REACH Unaffected, matching the regulatory compliance of the INA122PAG4.

Q: Which substitute part has the longest product lifecycle?

A: AD627ANZ and AD627BNZ are classified as Active status products, indicating ongoing manufacturing and long-term availability. INA122PAG4 and INA122PA are both Last Time Buy status, indicating limited future availability. For new designs requiring extended component sourcing, AD627 variants or INA122UA/2K5 are preferred.