OPA357AIDBVR Equivalent & Substitute Parts

Part Overview

The OPA357AIDBVR is a voltage feedback operational amplifier manufactured by Texas Instruments, designed for single-circuit rail-to-rail applications in surface mount SOT-23-6 packaging. This device is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when inventory constraints, lead time requirements, or specific application performance needs necessitate alternative component selection while maintaining circuit compatibility within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	1	—
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	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
Mounting Type	Surface Mount	—
Package / Case	SOT-23-6	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitute parts for the OPA357AIDBVR are classified into two categories based on substitution type and electrical compatibility:

Parametric Equivalent (Direct Substitution): The OPA357AIDBVT is a parametric equivalent manufactured by Texas Instruments. This part maintains identical electrical specifications across all critical parameters: voltage feedback amplifier topology, single circuit configuration, rail-to-rail output, 150 V/µs slew rate, 100 MHz gain bandwidth product, 250 MHz -3dB bandwidth, 3 pA input bias current, 2 mV input offset voltage, 4.9 mA supply current, 100 mA output current, 2.5 V to 5.5 V supply range, and -40°C to 125°C operating temperature. Package and mounting type are identical (SOT-23-6, surface mount). This substitution requires no circuit redesign.

Manufacturer Recommended Alternatives (Performance Enhancement Substitutes): The LTC6268 series parts (LTC6268HS6-10#TRMPBF, LTC6268IS6-10#TRMPBF, LTC6268IS6-10#TRPBF) manufactured by Analog Devices Inc. represent higher-performance alternatives. These parts differ in amplifier topology (J-FET versus voltage feedback) and offer enhanced electrical performance: 1500 V/µs slew rate (10× improvement), 4 GHz gain bandwidth product (40× improvement), 0.003 pA input bias current (1000× improvement), and 200 µV input offset voltage (10× improvement). Supply current is higher at 16.5 mA. Output current is slightly lower at 90 mA. Supply voltage range is 3.1 V to 5.25 V. Operating temperature varies by part number. Package remains SOT-23-6 (TSOT-23-6 variant). These substitutions require circuit evaluation due to performance differences.

Parameter Comparison

Parameter	OPA357AIDBVR	OPA357AIDBVT	LTC6268HS6-10#TRMPBF	LTC6268IS6-10#TRMPBF	LTC6268IS6-10#TRPBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	Voltage Feedback	Voltage Feedback	J-FET	J-FET	J-FET
Number of Circuits	1	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	150	150	1500	1500	1500
Gain Bandwidth Product (MHz)	100	100	4000	4000	4000
-3dB Bandwidth (MHz)	250	250	Not Specified	Not Specified	Not Specified
Current - Input Bias (pA)	3	3	0.003	0.003	0.003
Voltage - Input Offset (mV)	2	2	0.2	0.2	0.2
Current - Supply (mA)	4.9	4.9	16.5	16.5	16.5
Current - Output / Channel (mA)	100	100	90	90	90
Voltage - Supply Span Min (V)	2.5	2.5	3.1	3.1	3.1
Voltage - Supply Span Max (V)	5.5	5.5	5.25	5.25	5.25
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-23-6	SOT-23-6	SOT-23-6 Thin, TSOT-23-6	SOT-23-6 Thin, TSOT-23-6	SOT-23-6 Thin, TSOT-23-6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution (OPA357AIDBVT): The OPA357AIDBVT is suitable for direct substitution in applications where the OPA357AIDBVR is specified. All electrical parameters, package configuration, and compliance certifications are identical. This substitution is appropriate for inventory management, lead time mitigation, or supply chain continuity. No circuit modification is required. Both parts maintain ROHS3 compliance and Active product status.

Performance-Enhanced Substitution (LTC6268 Series): The LTC6268 series parts offer significantly improved electrical performance characteristics suitable for applications requiring higher slew rates, broader bandwidth, or lower input bias currents. Selection among LTC6268HS6-10#TRMPBF, LTC6268IS6-10#TRMPBF, and LTC6268IS6-10#TRPBF depends on operating temperature requirements and packaging format:

LTC6268HS6-10#TRMPBF supports -40°C to 125°C operating temperature (matching OPA357AIDBVR range) with Tape & Reel packaging.

LTC6268IS6-10#TRMPBF and LTC6268IS6-10#TRPBF support -40°C to 85°C operating temperature with Cut Tape & Digi-Reel® packaging.

All LTC6268 variants maintain ROHS3 compliance and Active product status. Circuit evaluation is required due to amplifier topology differences (J-FET versus voltage feedback), higher supply current consumption (16.5 mA versus 4.9 mA), and modified supply voltage range (3.1 V to 5.25 V versus 2.5 V to 5.5 V). Moisture sensitivity is improved (MSL 1 Unlimited versus MSL 2 1 Year).

Frequently Asked Questions (FAQ)

Q: Can OPA357AIDBVT be used as a direct replacement for OPA357AIDBVR?

A: Yes. The OPA357AIDBVT is a parametric equivalent with identical electrical specifications, package configuration (SOT-23-6), mounting type (surface mount), and compliance certifications (ROHS3). No circuit redesign is required.

Q: What are the key differences between OPA357AIDBVR and LTC6268 series parts?

A: The primary differences are amplifier topology (voltage feedback versus J-FET), slew rate (150 V/µs versus 1500 V/µs), gain bandwidth product (100 MHz versus 4 GHz), input bias current (3 pA versus 0.003 pA), input offset voltage (2 mV versus 200 µV), supply current (4.9 mA versus 16.5 mA), output current (100 mA versus 90 mA), and supply voltage range (2.5–5.5 V versus 3.1–5.25 V). Operating temperature varies by LTC6268 part number.

Q: Which LTC6268 variant should be selected for applications requiring -40°C to 125°C operation?

A: LTC6268HS6-10#TRMPBF is the only LTC6268 variant specified for -40°C to 125°C operating temperature range. LTC6268IS6-10#TRMPBF and LTC6268IS6-10#TRPBF are limited to -40°C to 85°C.

Q: Are all substitute parts available in SOT-23-6 packaging?

A: Yes. OPA357AIDBVT uses standard SOT-23-6 packaging. LTC6268 series parts use SOT-23-6 Thin (TSOT-23-6) packaging, which is mechanically compatible with standard SOT-23-6 footprints on printed circuit boards.

Q: What is the impact of higher supply current in LTC6268 parts?

A: LTC6268 series parts consume 16.5 mA supply current compared to 4.9 mA for OPA357AIDBVR. Power supply design and thermal management must accommodate this 3.4× increase in current draw. Circuit evaluation is required to confirm power supply capability and thermal performance.

Q: Do all substitute parts maintain the same moisture sensitivity level?

A: No. OPA357AIDBVR and OPA357AIDBVT have MSL 2 (1 Year) rating. LTC6268 series parts have MSL 1 (Unlimited) rating, indicating improved moisture resistance and extended shelf life without baking requirements.

Q: Can LTC6268 parts be used in applications with 2.5 V supply voltage?

A: No. LTC6268 series parts require minimum 3.1 V supply voltage. Applications operating at 2.5 V supply voltage cannot use LTC6268 substitutes. OPA357AIDBVR or OPA357AIDBVT must be used for 2.5 V operation.

Q: What compliance certifications apply to all substitute parts?

A: All parts (OPA357AIDBVR, OPA357AIDBVT, and LTC6268 series) are ROHS3 compliant, REACH unaffected, and classified as Active product status. ECCN classification is EAR99 for all parts. HTSUS code is 8542.33.0001 for all parts.

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