TSH151ID Equivalent & Substitute Parts

Part Overview

The TSH151ID is a general-purpose operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The TSH151ID delivers a gain-bandwidth product of 150 MHz with a slew rate of 200 V/µs, suitable for general-purpose amplification applications requiring moderate bandwidth performance.

Substiute Parts

TSH151ID

STMicroelectronicsIn Stock: 2121TSH151ID Datasheet

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AD9631ARZ-REEL

Analog Devices Inc.In Stock: 2876AD9631ARZ-REEL Datasheet

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OPA656U/2K5

Burr BrownIn Stock: 66041OPA656U/2K5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TSH151ID are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Mechanical Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility without layout modifications.

Electrical Compatibility: Substitute parts must operate within the supply voltage range of 6 V to 12 V minimum and maximum specifications. The TSH151ID operates across -40°C to 125°C; substitute parts operating within -40°C to 85°C remain functionally compatible for applications not requiring the extended upper temperature range.

Functional Compatibility: All substitute parts are single-circuit operational amplifiers in the linear amplifier category. Substitutes with equal or superior slew rate and gain-bandwidth product specifications maintain or exceed the performance envelope of the original device.

The identified substitute parts—AD9631ARZ-REEL and OPA656U/2K5—satisfy these mechanical and electrical criteria while offering enhanced performance characteristics in slew rate and bandwidth metrics.

Parameter Comparison

Engineering Selection Recommendations

AD9631ARZ-REEL Selection Criteria: The AD9631ARZ-REEL is an active product from Analog Devices Inc. with ROHS3 compliance. This substitute offers superior slew rate performance (1300 V/µs versus 200 V/µs) and higher gain-bandwidth product (320 MHz versus 150 MHz). The device operates within the 6 V to 12 V supply range and maintains the 8-SOIC package footprint. The operating temperature range extends to 85°C, which is suitable for applications not requiring the TSH151ID's extended 125°C upper limit. Input bias current increases to 2 µA and input offset voltage increases to 3 mV compared to the original device.

OPA656U/2K5 Selection Criteria: The OPA656U/2K5 is an active product from Burr Brown with enhanced performance specifications. This substitute provides slew rate of 295 V/µs and gain-bandwidth product of 230 MHz, both exceeding the TSH151ID baseline. The device maintains the 8-SOIC package and operates within -40°C to 85°C temperature range. Supply voltage minimum requirement is 8 V (versus 6 V for the TSH151ID), which may require circuit design consideration. Input bias current remains at 2 pA with improved input offset voltage of 250 µV. Supply current consumption is reduced to 14 mA.

Substitution Feasibility: Both substitute parts satisfy mechanical compatibility through identical 8-SOIC packaging. Electrical compatibility is confirmed through overlapping supply voltage ranges and compatible operating temperature windows for standard industrial applications. Selection between substitutes depends on specific application requirements regarding slew rate, bandwidth, and minimum supply voltage constraints.

Frequently Asked Questions (FAQ)

Q: Can the AD9631ARZ-REEL directly replace the TSH151ID without PCB modifications?

A: Yes. Both devices use the 8-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout compatibility for operational amplifier configurations. No PCB layout changes are required for mechanical substitution.

Q: What is the primary difference between the AD9631ARZ-REEL and OPA656U/2K5 substitutes?

A: The AD9631ARZ-REEL provides significantly higher slew rate (1300 V/µs) suitable for high-speed signal processing applications. The OPA656U/2K5 offers moderate slew rate improvement (295 V/µs) with lower supply current consumption (14 mA). Both exceed the TSH151ID's 200 V/µs slew rate and 150 MHz bandwidth specifications.

Q: Does the OPA656U/2K5 require circuit modifications due to its 8 V minimum supply voltage?

A: Applications operating the TSH151ID at supply voltages between 6 V and 8 V require circuit redesign to accommodate the OPA656U/2K5's 8 V minimum specification. The AD9631ARZ-REEL maintains the 6 V minimum supply voltage, eliminating this constraint.

Q: Are both substitute parts RoHS compliant?

A: The AD9631ARZ-REEL is ROHS3 compliant. RoHS compliance status for the OPA656U/2K5 is not specified in the available documentation.

Q: How do input offset voltage specifications affect circuit performance?

A: The TSH151ID specifies 500 µV input offset voltage. The OPA656U/2K5 improves this to 250 µV, reducing DC error in precision applications. The AD9631ARZ-REEL increases offset voltage to 3 mV, which may require offset nulling in precision instrumentation circuits.

Q: What is the significance of the input bias current difference between substitutes?

A: The TSH151ID and OPA656U/2K5 both specify 2 pA input bias current. The AD9631ARZ-REEL increases this to 2 µA, which affects high-impedance input circuits and may require input impedance compensation adjustments in transimpedance amplifier configurations.

Q: Can these substitutes be used in applications requiring operation above 85°C?

A: No. Both substitute parts operate to a maximum of 85°C, compared to the TSH151ID's 125°C upper limit. Applications requiring extended temperature operation above 85°C cannot use these substitutes without alternative component selection.

Q: What packaging format is the AD9631ARZ-REEL supplied in?

A: The AD9631ARZ-REEL is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The OPA656U/2K5 packaging format is not specified in the available documentation.