LT6012ACS#TRPBF Equivalent & Substitute Parts

Part Overview

The LT6012ACS#TRPBF is a general purpose operational amplifier manufactured by Analog Devices Inc., configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as Active product status and is RoHS3 compliant. The LT6012ACS#TRPBF serves applications requiring low-power, general-purpose amplification with rail-to-rail output capability across a wide supply voltage range of 2.7 V to 36 V.

Substitute parts are identified when equivalent electrical performance parameters and mechanical compatibility are maintained within the same package form factor and mounting technology. Substitution becomes necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative performance characteristics such as improved offset voltage, higher slew rate, or extended temperature operating range.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	0 to 70	°C
Slew Rate	0.11	V/µs
Gain Bandwidth Product	350	kHz
Current - Input Bias	20	pA
Voltage - Input Offset	35	µV
Current - Supply (x4 Channels)	135	µA
Current - Output / Channel	20	mA
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LT6012ACS#TRPBF are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

Package / Case: 14-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Number of Circuits: 4
Output Type: Rail-to-Rail
Voltage - Supply Span (Min): 2.7 V or lower
Voltage - Supply Span (Max): 36 V or higher

Secondary Performance Parameters:

Amplifier Type: General Purpose, Audio, J-FET, or Zero-Drift variants
Slew Rate: 0.11 V/µs or higher
Gain Bandwidth Product: 350 kHz or higher
Current - Input Bias: 20 pA or lower
Voltage - Input Offset: 35 µV or lower
Current - Supply: 135 µA or lower per 4 channels
Current - Output / Channel: 20 mA or higher

Substitute parts are grouped by amplifier type classification while maintaining the core electrical and mechanical parameters. Parts that exceed the minimum supply voltage requirement (2.7 V minimum) but remain within the maximum supply voltage (36 V) are acceptable substitutes. Parts with improved performance characteristics (lower offset voltage, higher slew rate, extended temperature range) are listed as viable alternatives for applications with enhanced requirements.

Parameter Comparison

Parameter	LT6012ACS#TRPBF	OPA4170AID	OPA4170AIDR	OPA4171AQDRQ1	OPA4188AID	OPA4188AIDR	OPA4140AIDR	OPA1654AID	OPA1654AIDR
Manufacturer	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	Zero-Drift	Zero-Drift	J-FET	Audio	Audio
Number of Circuits	4	4	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	4.5 V	4 V	4 V	4.5 V	4.5 V	4.5 V
Voltage - Supply Span (Max)	36 V	36 V	36 V	36 V	36 V	36 V	36 V	36 V	36 V
Operating Temperature	0 to 70°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 125°C	-40 to 85°C	-40 to 85°C
Slew Rate	0.11 V/µs	0.4 V/µs	0.4 V/µs	1.5 V/µs	0.8 V/µs	0.8 V/µs	20 V/µs	10 V/µs	10 V/µs
Gain Bandwidth Product	350 kHz	1.2 MHz	1.2 MHz	3 MHz	2 MHz	2 MHz	11 MHz	18 MHz	18 MHz
Current - Input Bias	20 pA	8 pA	8 pA	8 pA	160 pA	160 pA	0.5 pA	10 pA	10 pA
Voltage - Input Offset	35 µV	250 µV	250 µV	250 µV	6 µV	6 µV	30 µV	500 µV	500 µV
Current - Supply (x4 Channels)	135 µA	110 µA	110 µA	475 µA	415 µA	415 µA	1.8 mA	2 mA	2 mA
Current - Output / Channel	20 mA	20 mA	20 mA	35 mA	18 mA	18 mA	36 mA	50 mA	50 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	2 (1 Year)	2 (1 Year)	3 (168 Hours)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Direct General Purpose Substitutes (Closest Functional Match):

The OPA4170AID and OPA4170AIDR are direct general purpose amplifier substitutes that maintain the same amplifier classification as the LT6012ACS#TRPBF. Both parts operate across the full 2.7 V to 36 V supply range, feature identical 14-SOIC packaging, and deliver equivalent current output per channel (20 mA). The OPA4170 series exhibits improved slew rate (0.4 V/µs versus 0.11 V/µs) and higher gain bandwidth product (1.2 MHz versus 350 kHz), with lower input bias current (8 pA versus 20 pA). Both OPA4170 variants are Active product status and RoHS3 compliant. The OPA4170AIDR offers higher inventory availability (20,200 units) compared to OPA4170AID (2,440 units) and is supplied in Tape & Reel packaging.

Extended Temperature Range Alternative:

The OPA4171AQDRQ1 provides general purpose amplification with extended operating temperature range (-40°C to 125°C versus 0°C to 70°C) and automotive qualification (AEC-Q100). This part requires minimum supply voltage of 4.5 V, which restricts use in applications below this threshold. The OPA4171AQDRQ1 delivers higher slew rate (1.5 V/µs) and gain bandwidth product (3 MHz) with increased output current capability (35 mA per channel). This device is suitable for automotive and industrial applications requiring wider temperature operation.

Zero-Drift Performance Alternative:

The OPA4188AID and OPA4188AIDR offer zero-drift amplifier technology with superior input offset voltage (6 µV versus 35 µV). These parts require minimum supply voltage of 4 V and deliver slew rate of 0.8 V/µs with gain bandwidth product of 2 MHz. The OPA4188 series exhibits higher input bias current (160 pA) and reduced output current per channel (18 mA). The OPA4188AIDR provides significantly higher inventory (32,045 units) and is supplied in Tape & Reel packaging. Zero-drift technology is applicable to precision measurement and signal conditioning applications where offset voltage stability is critical.

High-Speed J-FET Alternative:

The OPA4140AIDR provides J-FET input amplifier technology with exceptional input bias current (0.5 pA) and high slew rate (20 V/µs). This part requires minimum supply voltage of 4.5 V and delivers gain bandwidth product of 11 MHz with output current of 36 mA per channel. The OPA4140AIDR is suitable for high-impedance signal sources and applications requiring fast transient response. Extended operating temperature range (-40°C to 125°C) and AEC-Q100 qualification are available.

Audio Amplifier Alternative:

The OPA1654AID and OPA1654AIDR are audio amplifier variants with high slew rate (10 V/µs) and gain bandwidth product (18 MHz). These parts require minimum supply voltage of 4.5 V and deliver output current of 50 mA per channel. The OPA1654 series exhibits higher input offset voltage (500 µV) and supply current (2 mA per 4 channels). The OPA1654AIDR offers highest inventory availability (16,645 units) among audio variants and is supplied in Tape & Reel packaging. Audio amplifier classification is applicable to signal conditioning and audio processing applications.

Packaging and Compliance Considerations:

All substitute parts maintain 14-SOIC surface mount package compatibility and RoHS3 compliance. Moisture sensitivity levels vary across substitutes, with the LT6012ACS#TRPBF offering superior MSL rating (1 - Unlimited) compared to substitute parts (MSL 2 or 3). Selection of substitute parts with higher MSL ratings requires implementation of appropriate moisture control procedures during storage and assembly. All parts are classified as Active product status with REACH unaffected designation and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can OPA4170AID directly replace LT6012ACS#TRPBF in existing designs?

A: The OPA4170AID is mechanically and electrically compatible as a direct substitute. Both devices feature 14-SOIC surface mount packaging, 4-circuit rail-to-rail configuration, and operate across 2.7 V to 36 V supply range. The OPA4170AID delivers improved performance with higher slew rate (0.4 V/µs versus 0.11 V/µs) and lower input bias current (8 pA versus 20 pA). No PCB layout modifications are required for substitution.

Q: What is the minimum supply voltage requirement for OPA4171AQDRQ1 substitution?

A: The OPA4171AQDRQ1 requires minimum supply voltage of 4.5 V, compared to 2.7 V for the LT6012ACS#TRPBF. This part is not suitable for applications operating below 4.5 V supply voltage. Verify supply voltage specifications in your application before selecting this substitute.

Q: Why does OPA4188AIDR have higher input bias current than LT6012ACS#TRPBF?

A: The OPA4188AIDR employs zero-drift amplifier architecture, which uses internal chopper-stabilization circuitry to achieve extremely low input offset voltage (6 µV versus 35 µV). This architecture results in higher input bias current (160 pA versus 20 pA) as a design trade-off. Zero-drift technology is beneficial for precision measurement applications where offset voltage stability is prioritized over input bias current.

Q: Is OPA4140AIDR suitable for low-impedance signal sources?

A: The OPA4140AIDR features J-FET input stage with extremely low input bias current (0.5 pA), making it optimal for high-impedance signal sources. For low-impedance applications, the general purpose OPA4170 series or the original LT6012ACS#TRPBF are more appropriate selections, as they provide better performance with lower source impedance.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats. OPA4170AIDR, OPA4188AIDR, OPA4140AIDR, and OPA1654AIDR are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® packaging, matching the original LT6012ACS#TRPBF Tape & Reel format. OPA4170AID, OPA4188AID, and OPA1654AID are supplied in Tube packaging. Verify packaging requirements for your assembly process before part selection.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant, matching the compliance status of LT6012ACS#TRPBF. All parts are REACH unaffected and classified as EAR99 for export purposes.

Q: What is the operating temperature range difference between LT6012ACS#TRPBF and OPA4170AIDR?

A: The LT6012ACS#TRPBF operates from 0°C to 70°C, while OPA4170AIDR operates from -40°C to 125°C. The OPA4170AIDR provides extended temperature range suitable for industrial and automotive applications requiring operation below 0°C or above 70°C. Verify your application temperature requirements before selecting a substitute.

Q: Can OPA1654AIDR be used in non-audio applications?

A: The OPA1654AIDR is classified as an audio amplifier but functions as a general-purpose 4-circuit rail-to-rail amplifier. The audio classification indicates optimized performance characteristics for audio signal processing, including high slew rate (10 V/µs) and gain bandwidth product (18 MHz). This device is suitable for any application requiring these performance characteristics, regardless of audio classification.

Q: What is the significance of Moisture Sensitivity Level (MSL) differences?

A: The LT6012ACS#TRPBF has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Substitute parts with MSL 2 (1 Year) or MSL 3 (168 Hours) require moisture control during storage and assembly. MSL 2 parts must be used within one year of packaging opening, while MSL 3 parts must be used within 168 hours. Implement appropriate dry storage and baking procedures per IPC-A-610 standards when using higher MSL-rated substitutes.

Q: Which substitute part offers the lowest input offset voltage?

A: The OPA4188AID and OPA4188AIDR offer the lowest input offset voltage at 6 µV, compared to 35 µV for the LT6012ACS#TRPBF. This superior offset voltage performance is achieved through zero-drift amplifier architecture and is beneficial for precision instrumentation and measurement applications.

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