TS1851ILT Equivalent & Substitute Parts

Part Overview

The TS1851ILT is a general-purpose operational amplifier manufactured by STMicroelectronics, housed in a SOT-23-5 surface mount package. This single-circuit, rail-to-rail amplifier operates across a 1.8 V to 6 V supply range and is designed for low-power applications requiring compact form factors. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter tolerances.

Substiute Parts

TS1851ILT

STMicroelectronicsIn Stock: 5273TS1851ILT Datasheet

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AD8061ARTZ-REEL7

Analog Devices Inc.In Stock: 28960AD8061ARTZ-REEL7 Datasheet

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AD8605ARTZ-R2

Analog Devices Inc.In Stock: 4439AD8605ARTZ-R2 Datasheet

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MAX4091AUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1205MAX4091AUK+T Datasheet

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OPA313IDBVR

Texas InstrumentsIn Stock: 16033OPA313IDBVR Datasheet

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OPA313IDBVT

Texas InstrumentsIn Stock: 20532OPA313IDBVT Datasheet

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TLV2761IDBVR

Texas InstrumentsIn Stock: 7306TLV2761IDBVR Datasheet

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TLV313IDBVT

Texas InstrumentsIn Stock: 2910TLV313IDBVT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TS1851ILT is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package / Case: SC-74A, SOT-753 (SOT-23-5 supplier device package)
• Mounting Type: Surface Mount
• Amplifier Type: General Purpose
• Number of Circuits: 1
• Output Type: Rail-to-Rail

Electrical Operating Range:

• Voltage - Supply Span: Minimum 1.8 V, Maximum 6 V
• Operating Temperature: -40°C to 125°C

Performance Parameters (allowable variance):

• Slew Rate: 0.25 V/µs or greater
• Gain Bandwidth Product: 630 kHz or greater
• Current - Supply: 162 µA or less (lower is preferred for power efficiency)
• Current - Output / Channel: 48 mA or greater

Substitute parts must satisfy all mandatory criteria and operate within the specified electrical ranges. Performance parameters may exceed the TS1851ILT baseline without restriction, as higher performance does not compromise circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

OPA313IDBVT (Texas Instruments)

The OPA313IDBVT is a direct functional equivalent with identical package, mounting type, and operating temperature range. It provides superior slew rate (0.5 V/µs vs. 0.25 V/µs) and higher gain bandwidth product (1 MHz vs. 630 kHz). Supply current is significantly lower at 50 µA. The part is ROHS3 compliant and active in production. MSL rating of 2 (1 Year) requires standard moisture control during storage and handling.

AD8605ARTZ-R2 (Analog Devices Inc.)

The AD8605ARTZ-R2 operates within the general-purpose amplifier category with identical package and mounting specifications. It delivers substantially higher performance metrics: 5 V/µs slew rate and 10 MHz gain bandwidth product. Supply current is minimal at 1 µA, making it suitable for ultra-low-power applications. Minimum supply voltage is 2.7 V (vs. 1.8 V for TS1851ILT), which may limit use in applications requiring lower supply rails. ROHS3 compliant with MSL 1 rating.

MAX4091AUK+T (Analog Devices Inc./Maxim Integrated)

The MAX4091AUK+T maintains compatibility across all mandatory criteria with identical package and operating temperature range. Slew rate is marginally lower at 0.2 V/µs, while gain bandwidth product is 500 kHz. Supply current of 130 µA is moderate. The part supports the full 2.7 V to 6 V supply range and is ROHS3 compliant with MSL 1 rating. Tape & Reel packaging is specified.

TLV313IDBVT (Texas Instruments)

The TLV313IDBVT is a general-purpose rail-to-rail amplifier in SOT-23-5 package with identical operating temperature range. Slew rate of 0.5 V/µs and gain bandwidth product of 1 MHz exceed TS1851ILT performance. Supply current is 65 µA. Maximum supply voltage is limited to 5.5 V, which may restrict applications requiring 6 V operation. ROHS3 compliant with MSL 2 (1 Year) rating.

AD8061ARTZ-REEL7 (Analog Devices Inc.)

The AD8061ARTZ-REEL7 is classified as a voltage feedback amplifier rather than general-purpose, representing a different amplifier topology. It exhibits exceptional performance with 650 V/µs slew rate and 320 MHz bandwidth. However, maximum operating temperature is limited to 85°C (vs. 125°C for TS1851ILT), and supply current is substantially higher at 6.8 mA. This part is suitable only for applications where the lower temperature rating and higher power consumption are acceptable. ROHS3 compliant with MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can OPA313IDBVT replace TS1851ILT in all applications?

A: OPA313IDBVT is mechanically and electrically compatible across the specified operating range. It provides superior performance in slew rate and bandwidth while consuming less supply current. The MSL 2 rating requires standard moisture control during storage. No functional limitations exist for direct substitution.

Q: What is the key difference between AD8605ARTZ-R2 and TS1851ILT?

A: AD8605ARTZ-R2 offers significantly higher performance (5 V/µs slew rate, 10 MHz bandwidth) and ultra-low supply current (1 µA). The minimum supply voltage is 2.7 V instead of 1.8 V. For applications operating above 2.7 V, AD8605ARTZ-R2 is a superior choice. For circuits requiring 1.8 V operation, TS1851ILT or OPA313IDBVT are required.

Q: Why is AD8061ARTZ-REEL7 listed as a substitute if it has different amplifier topology?

A: AD8061ARTZ-REEL7 meets all mandatory mechanical and package requirements (SOT-23-5, surface mount, rail-to-rail output). However, its voltage feedback topology and higher supply current (6.8 mA) make it suitable only for applications where performance exceeds requirements and power consumption is not a constraint. Maximum operating temperature of 85°C limits use in high-temperature environments.

Q: What does MSL 1 vs. MSL 2 mean for component handling?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life under standard conditions without requiring baking before reflow. MSL 2 (1 Year) requires the component to be baked if it has been stored for more than one year or exposed to moisture. Both ratings are standard for surface mount components and do not affect electrical performance.

Q: Can MAX4091AUK+T be used in place of TS1851ILT?

A: MAX4091AUK+T is mechanically and electrically compatible. Slew rate is marginally lower at 0.2 V/µs, and gain bandwidth product is 500 kHz. For applications where slew rate and bandwidth are not critical, MAX4091AUK+T provides equivalent functionality with moderate supply current (130 µA).

Q: Which substitute offers the lowest power consumption?

A: AD8605ARTZ-R2 provides the lowest supply current at 1 µA, making it the optimal choice for battery-powered or ultra-low-power applications. However, minimum supply voltage of 2.7 V must be verified against circuit requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (OPA313IDBVT, AD8605ARTZ-R2, MAX4091AUK+T, TLV313IDBVT, and AD8061ARTZ-REEL7) are ROHS3 compliant and REACH unaffected, matching the environmental compliance of TS1851ILT.

Q: What is the primary limitation of TLV313IDBVT?

A: TLV313IDBVT has a maximum supply voltage of 5.5 V, which is 0.5 V lower than TS1851ILT. Applications requiring 6 V operation cannot use TLV313IDBVT. For circuits operating at 5.5 V or below, TLV313IDBVT is fully compatible.

Q: Is AD8061ARTZ-REEL7 suitable for high-temperature applications?

A: No. AD8061ARTZ-REEL7 has a maximum operating temperature of 85°C, compared to 125°C for TS1851ILT. Applications requiring operation above 85°C must use TS1851ILT, OPA313IDBVT, AD8605ARTZ-R2, MAX4091AUK+T, or TLV313IDBVT.