OPA4354AIPWTG4 Equivalent & Substitute Parts

Part Overview

The OPA4354AIPWTG4 is a CMOS quad operational amplifier manufactured by Texas Instruments, housed in a 14-TSSOP surface mount package. This device features rail-to-rail output capability with a 150V/µs slew rate and 100 MHz gain bandwidth product, designed for general-purpose analog signal processing applications requiring moderate speed and precision.

The OPA4354AIPWTG4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this amplifier topology.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	150	V/µs
Gain Bandwidth Product	100	MHz
-3dB Bandwidth	250	MHz
Current - Input Bias	3	pA
Voltage - Input Offset	2	mV
Current - Supply (x4 Channels)	4.9	mA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitute parts for the OPA4354AIPWTG4 are categorized based on electrical and mechanical compatibility within the CMOS quad amplifier category. The primary substitution criteria are:

Electrical Compatibility Parameters:

Amplifier Type: CMOS
Number of Circuits: 4
Output Type: Rail-to-Rail
Operating Temperature Range: -40°C to 125°C
Supply Voltage Range: Minimum 2.5V, Maximum 5.5V

Mechanical Compatibility Parameters:

Package Type: 14-TSSOP surface mount
Package Dimensions: 0.173" width, 4.40mm width
Mounting Type: Surface Mount

Substitution Categories:

Category 1: Direct Parametric Equivalents (Same Package, Identical Electrical Specifications) Parts OPA4354AIPWR and OPA4354AIPWT maintain identical electrical performance specifications and operate in the same 14-TSSOP package. These parts are direct replacements with active product status.

Category 2: Package Variant (Different Package, Identical Electrical Specifications) Part OPA4354AIDR provides identical electrical specifications but in a 14-SOIC package (0.154", 3.90mm width). This substitution requires PCB layout modification.

Category 3: Functional Alternatives (Different Electrical Characteristics, Same Package) Parts from Analog Devices (AD8504ARUZ, AD8504ARUZ-REEL, AD8508ARUZ, AD8508ARUZ-REEL, AD8609ARUZ, AD8609ARUZ-REEL, AD8619ARUZ, AD8619ARUZ-REEL) provide quad CMOS amplifiers in 14-TSSOP packages with varying performance characteristics. These parts operate within overlapping supply voltage ranges but exhibit different slew rates, bandwidth, and current specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Package	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)
OPA4354AIPWTG4	Texas Instruments	Obsolete	14-TSSOP	150	100	3	2	4.9	100	2.5	5.5
OPA4354AIDR	Texas Instruments	Active	14-SOIC	150	100	3	2	4.9	100	2.5	5.5
OPA4354AIPWR	Texas Instruments	Active	14-TSSOP	150	100	3	2	4.9	100	2.5	5.5
OPA4354AIPWT	Texas Instruments	Active	14-TSSOP	150	100	3	2	4.9	100	2.5	5.5
AD8504ARUZ	Analog Devices Inc.	Active	14-TSSOP	0.004	0.007	1	0.5	0.75	5	1.8	5.5
AD8504ARUZ-REEL	Analog Devices Inc.	Active	14-TSSOP	0.004	0.007	1	0.5	0.75	5	1.8	5.5
AD8508ARUZ	Analog Devices Inc.	Active	14-TSSOP	0.013	0.095	1	0.5	15	45	1.8	5
AD8508ARUZ-REEL	Analog Devices Inc.	Active	14-TSSOP	0.013	0.095	1	0.5	15	45	1.8	5
AD8609ARUZ	Analog Devices Inc.	Active	14-TSSOP	0.1	0.4	0.2	0.012	40	70	1.8	5
AD8609ARUZ-REEL	Analog Devices Inc.	Active	14-TSSOP	0.1	0.4	0.2	0.012	40	70	1.8	5
AD8619ARUZ	Analog Devices Inc.	Active	14-TSSOP	0.1	0.4	0.2	0.4	38	80	1.8	5
ADA4891-4ARUZ-R7	Analog Devices Inc.	Active	14-TSSOP	150	100	3	2	4.9	100	2.5	5.5

Engineering Selection Recommendations

For Direct Replacement (No Design Changes Required):

OPA4354AIPWR and OPA4354AIPWT are recommended as primary substitutes. Both parts are manufactured by Texas Instruments with active product status, identical electrical specifications to the obsolete OPA4354AIPWTG4, and the same 14-TSSOP package. These parts maintain full compatibility with existing PCB layouts and require no circuit modifications. OPA4354AIPWR has higher inventory availability (23,587 units) compared to OPA4354AIPWT (2,092 units).

For Package Variant Substitution (PCB Layout Modification Required):

OPA4354AIDR provides identical electrical performance but in a 14-SOIC package. This substitution requires PCB footprint redesign and is suitable only when package size reduction or alternative mounting requirements justify the design effort. This part has active product status and high inventory availability (50,200 units).

For Functional Alternative Substitution (Application-Dependent):

ADA4891-4ARUZ-R7 from Analog Devices Inc. provides equivalent electrical specifications (150V/µs slew rate, 100 MHz GBW, 3pA input bias, 2mV input offset, 100mA output current) in the same 14-TSSOP package with active product status. This part is suitable for applications where Analog Devices qualification is required or preferred.

Analog Devices parts AD8504ARUZ, AD8508ARUZ, AD8609ARUZ, and AD8619ARUZ are not recommended as direct substitutes due to significantly different electrical characteristics. These parts exhibit substantially lower slew rates, reduced bandwidth, and different output current capabilities. Selection of these alternatives requires complete circuit re-evaluation and application-specific validation.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original OPA4354AIPWTG4. Moisture sensitivity levels vary: Texas Instruments parts maintain MSL 2 (1 Year), while Analog Devices parts specify MSL 1 (Unlimited), providing superior moisture protection for extended storage.

Frequently Asked Questions (FAQ)

Q: Can OPA4354AIPWR be used as a direct replacement for OPA4354AIPWTG4 without circuit modifications?

A: Yes. OPA4354AIPWR is a direct parametric equivalent with identical electrical specifications, the same 14-TSSOP package, and active product status. No circuit modifications are required. The part operates within the same supply voltage range (2.5V to 5.5V) and maintains equivalent performance across all specified parameters.

Q: What is the difference between OPA4354AIPWR and OPA4354AIPWT?

A: Both parts are parametrically identical with the same electrical specifications and 14-TSSOP package. The difference lies in packaging format and inventory availability. OPA4354AIPWR is available in Cut Tape and Digi-Reel format with 23,587 units in stock. OPA4354AIPWT is available in Cut Tape and Digi-Reel format with 2,092 units in stock. Selection depends on procurement volume and packaging requirements.

Q: Why is OPA4354AIDR not recommended as a primary substitute despite identical electrical specifications?

A: OPA4354AIDR uses a 14-SOIC package (0.154" width, 3.90mm) instead of the 14-TSSOP package (0.173" width, 4.40mm) of the original part. This package difference requires PCB footprint redesign and re-layout. While electrically equivalent, this substitution introduces design modification effort and should be considered only when package size reduction justifies the engineering effort.

Q: Can AD8504ARUZ be used as a substitute for OPA4354AIPWTG4?

A: No. Although AD8504ARUZ is a quad CMOS amplifier in a 14-TSSOP package, it exhibits fundamentally different electrical characteristics. The AD8504ARUZ has a slew rate of 0.004V/µs (compared to 150V/µs), gain bandwidth product of 7kHz (compared to 100MHz), and output current of 5mA per channel (compared to 100mA). These differences make it unsuitable for applications designed around the OPA4354AIPWTG4 performance envelope. Complete circuit re-evaluation would be required.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference between Texas Instruments and Analog Devices parts?

A: Texas Instruments OPA4354 variants specify MSL 2 (1 Year), requiring storage in controlled humidity environments and baking before reflow soldering if storage exceeds one year. Analog Devices parts specify MSL 1 (Unlimited), allowing indefinite storage without moisture control or baking requirements. For applications with extended component storage or high-humidity environments, Analog Devices parts provide superior moisture protection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original OPA4354AIPWTG4. This ensures compatibility with environmental regulations and procurement requirements across all markets.

Q: What inventory considerations should guide substitute part selection?

A: OPA4354AIPWR has the highest inventory availability (23,587 units) among Texas Instruments direct equivalents, providing supply security for high-volume production. OPA4354AIDR offers the largest inventory pool (50,200 units) if package variant substitution is acceptable. Analog Devices alternatives (AD8609ARUZ-REEL with 10,300 units) provide secondary sourcing options for risk mitigation, though they require application-specific validation due to different electrical characteristics.

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