ISO122PG4 Equivalent & Substitute Parts

Part Overview

The ISO122PG4 is a single-circuit isolation amplifier manufactured by Texas Instruments in a 16-DIP (0.300", 7.62mm) through-hole package with 8 leads. This component provides galvanic isolation for analog signal conditioning applications with a -3dB bandwidth of 50 kHz and operates across a 9V to 36V supply range. The ISO122PG4 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

ISO122PG4

Texas InstrumentsIn Stock: 732ISO122PG4 Datasheet

Current PartRFQ

ISO122P

Texas InstrumentsIn Stock: 4628ISO122P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ISO122PG4 is determined by strict equivalence across the following electrical and mechanical parameters:

• Amplifier Type: Must be Isolation amplifier
• Number of Circuits: Must be 1 circuit
• Slew Rate: Must be 2 V/µs
• -3dB Bandwidth: Must be 50 kHz
• Voltage - Input Offset: Must be 20 mV
• Current - Supply: Must be 5 mA
• Current - Output / Channel: Must be 15 mA
• Voltage - Supply Span: Must support 9V minimum to 36V maximum
• Operating Temperature Range: Must be -25°C to 85°C
• Mounting Type: Must be Through Hole
• Package / Case: Must be 16-DIP (0.300", 7.62mm), 8 Leads
• RoHS Status: Must be ROHS3 Compliant

The ISO122P meets all specified electrical and mechanical parameters and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The ISO122P is the direct substitute for the discontinued ISO122PG4. Both components share identical electrical specifications, mechanical packaging, and regulatory compliance certifications. The ISO122P is currently in active product status with higher inventory availability (4578 pieces in stock versus 689 pieces for the ISO122PG4), ensuring supply chain continuity. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The primary distinction is packaging format: the ISO122P is supplied in tube packaging, whereas the ISO122PG4 packaging specification was not provided. Selection of the ISO122P eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the ISO122P directly replace the ISO122PG4 in existing designs?

A: Yes. The ISO122P and ISO122PG4 are electrically and mechanically identical across all specified parameters, including slew rate, bandwidth, supply voltage range, operating temperature, and package configuration. Direct substitution is supported without circuit modification.

Q: What is the primary reason for substituting the ISO122PG4?

A: The ISO122PG4 is discontinued at DiGi Electronics. The ISO122P provides identical functionality and is in active production status, ensuring long-term availability and supply chain reliability.

Q: Are there differences in packaging between these parts?

A: The ISO122P is supplied in tube packaging. The ISO122PG4 packaging format was not specified in the component data. Both use the same 16-DIP (0.300", 7.62mm) through-hole package with 8 leads, ensuring mechanical compatibility on printed circuit boards.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the ISO122PG4 and ISO122P are ROHS3 compliant, REACH unaffected, and classified as EAR99 under export control regulations. Compliance certifications are identical.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in amplifier type (isolation), circuit count (1), slew rate (2 V/µs), bandwidth (50 kHz), input offset voltage (20 mV), supply current (5 mA), output current (15 mA), supply voltage range (9V to 36V), and operating temperature range (-25°C to 85°C).

Q: Is the ISO122P available in higher quantities?

A: Yes. The ISO122P has 4578 pieces in stock compared to 689 pieces for the ISO122PG4, providing improved procurement flexibility and reduced lead times.