OPA2348CKGD4 Equivalent & Substitute Parts

Part Overview

The OPA2348CKGD4 is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, designed for rail-to-rail signal processing applications. This component features a die-level package configuration and is classified as obsolete product status. Due to its obsolete classification, identifying functionally equivalent substitute parts with active production status is essential for design continuity and procurement reliability.

Key Parameters

Parameter	Value
Amplifier Type	CMOS
Number of Circuits	2
Output Type	Rail-to-Rail
Slew Rate	0.5 V/µs
Gain Bandwidth Product	1 MHz
Current - Input Bias	0.5 pA
Voltage - Input Offset	1 mV
Current - Supply	45 µA (x2 Channels)
Current - Output / Channel	10 mA
Voltage - Supply Span (Min)	2.1 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature Range	-40°C to 125°C
Mounting Type	Surface Mount
Package / Case	Die
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OPA2348CKGD4 is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Amplifier Type: CMOS
Number of Circuits: 2
Output Type: Rail-to-Rail
Slew Rate: 0.5 V/µs
Gain Bandwidth Product: 1 MHz
Current - Input Bias: 0.5 pA
Voltage - Input Offset: 1 mV
Current - Supply: 45 µA (x2 Channels)
Current - Output / Channel: 10 mA
Voltage - Supply Span: 2.1 V to 5.5 V
Operating Temperature Range: -40°C to 125°C

Mechanical Compatibility:

Mounting Type: Surface Mount
Base Product Number: OPA234 series

The OPA2348AID qualifies as a direct substitute based on identical electrical specifications and compatible surface mount technology. The primary difference is packaging format: the main part uses die-level packaging, while the substitute uses 8-SOIC (0.154", 3.90mm Width) standard integrated circuit packaging.

Parameter Comparison

Parameter	OPA2348CKGD4 (Main Part)	OPA2348AID (Substitute)
Manufacturer	Texas Instruments	Texas Instruments
Category	Linear, Amplifiers	Linear, Amplifiers
Amplifier Type	CMOS	CMOS
Number of Circuits	2	2
Output Type	Rail-to-Rail	Rail-to-Rail
Slew Rate	0.5 V/µs	0.5 V/µs
Gain Bandwidth Product	1 MHz	1 MHz
Current - Input Bias	0.5 pA	0.5 pA
Voltage - Input Offset	1 mV	1 mV
Current - Supply	45 µA (x2 Channels)	45 µA (x2 Channels)
Current - Output / Channel	10 mA	10 mA
Voltage - Supply Span (Min)	2.1 V	2.1 V
Voltage - Supply Span (Max)	5.5 V	5.5 V
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	Die	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Product Status Consideration: The OPA2348CKGD4 carries obsolete product status, which restricts long-term availability and supply chain reliability. The OPA2348AID maintains active production status with Texas Instruments, ensuring continued availability and manufacturing support.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for industrial and commercial applications.

Packaging Transition: Selection between these parts depends on application-level packaging requirements. The OPA2348CKGD4 die format requires hybrid integration or custom packaging solutions. The OPA2348AID 8-SOIC package provides standard surface mount integration suitable for conventional PCB assembly processes.

Electrical Equivalence: All electrical parameters are identical between the main part and substitute, confirming functional interchangeability at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can OPA2348AID directly replace OPA2348CKGD4 in existing designs?

A: Electrical substitution is complete. The OPA2348AID provides identical electrical performance across all specified parameters. However, packaging format differs: OPA2348CKGD4 is a die requiring custom packaging, while OPA2348AID is a standard 8-SOIC package. PCB layout and assembly process modifications are required.

Q: What is the primary reason for seeking a substitute for OPA2348CKGD4?

A: The OPA2348CKGD4 is classified as obsolete. The OPA2348AID, with active product status, provides equivalent electrical performance with assured long-term supply availability.

Q: Are there compliance differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance and REACH unaffected status. Environmental and regulatory requirements are satisfied by either part.

Q: What packaging considerations apply to the OPA2348AID?

A: The OPA2348AID uses 8-SOIC (0.154", 3.90mm Width) surface mount packaging, compatible with standard PCB assembly equipment and processes. This differs from the die-level packaging of OPA2348CKGD4.

Q: Are the electrical specifications identical between OPA2348CKGD4 and OPA2348AID?

A: Yes. Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, output current, supply voltage range, and operating temperature range are identical across both parts.

Q: What is the moisture sensitivity level difference?

A: OPA2348CKGD4 has MSL 1 (Unlimited), while OPA2348AID has MSL 2 (1 Year). This affects storage and handling requirements for the substitute part.

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