TS522IN Equivalent & Substitute Parts

Part Overview

The TS522IN is a dual-channel audio amplifier integrated circuit manufactured by STMicroelectronics, housed in an 8-Mini DIP through-hole package. This component is classified as obsolete, though 3060 units remain in current inventory. The TS522IN is qualified to AEC-Q100 automotive standards and operates across a -40°C to 125°C temperature range. Due to its obsolete status, identification of equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability planning.

Substiute Parts

TS522IN

STMicroelectronicsIn Stock: 3108TS522IN Datasheet

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BA15218

Rohm SemiconductorIn Stock: 3109BA15218 Datasheet

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LT1208CN8#PBF

Linear TechnologyIn Stock: 1170LT1208CN8#PBF Datasheet

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OP275GPZ

Analog Devices Inc.In Stock: 3074OP275GPZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the TS522IN is determined by the following critical parameters: dual-channel configuration (2 circuits), 8-DIP through-hole package format, supply voltage range overlap, and operating temperature capability. The TS522IN is specifically classified as an audio amplifier with automotive-grade qualification.

Three substitute parts are identified based on these criteria:

BA15218 (Rohm Semiconductor): General-purpose dual-channel amplifier in 8-DIP package. Shares identical package geometry and through-hole mounting. Supply voltage range (4V to 32V) encompasses the TS522IN specification. Operating temperature range (-40°C to 85°C) covers the lower portion of TS522IN range. Active product status ensures ongoing availability.

LT1208CN8#PBF (Linear Technology): General-purpose dual-channel amplifier in 8-PDIP package. Identical package footprint and through-hole mounting. Supply voltage range (5V to 30V) matches TS522IN specification. Operating temperature range (0°C to 70°C) is narrower than TS522IN. Active product status with higher slew rate and gain bandwidth product specifications.

OP275GPZ (Analog Devices Inc.): Audio amplifier dual-channel configuration in 8-PDIP package. Identical package footprint and through-hole mounting. Supply voltage range (9V to 44V) overlaps TS522IN specification above 9V minimum. Operating temperature range (-40°C to 85°C) covers lower portion of TS522IN range. Active product status with audio amplifier classification matching TS522IN functional category.

Parameter Comparison

Engineering Selection Recommendations

OP275GPZ is the primary substitute for audio amplifier applications. This part shares the audio amplifier classification with the TS522IN, maintains identical package geometry, and is actively manufactured by Analog Devices Inc. Both components are ROHS3 compliant. The OP275GPZ operates across -40°C to 85°C, covering the lower temperature range of the TS522IN. Applications requiring operation above 85°C must retain the TS522IN or evaluate alternative solutions. The OP275GPZ provides higher output current capability (90 mA per channel versus 37 mA), which may require circuit validation in current-limited designs.

BA15218 is suitable for general-purpose dual-channel amplifier applications where audio-specific performance is not required. This Rohm Semiconductor part maintains full compatibility with the 8-DIP package and through-hole mounting. The BA15218 operates across -40°C to 85°C and is actively produced. Lower slew rate (3 V/µs) and gain bandwidth product (10 MHz) compared to the TS522IN require evaluation for frequency-dependent applications.

LT1208CN8#PBF is applicable for high-speed applications requiring superior slew rate (400 V/µs) and gain bandwidth product (45 MHz). This Linear Technology part is actively manufactured and maintains package compatibility. The operating temperature range (0°C to 70°C) is the most restrictive among substitutes and excludes low-temperature operation below 0°C. Applications requiring -40°C operation cannot use this substitute.

Automotive-grade qualification (AEC-Q100) is specific to the TS522IN. Substitute parts do not carry this certification. Applications subject to automotive qualification requirements must retain the TS522IN or pursue formal qualification of substitute components through the respective manufacturers.

Frequently Asked Questions (FAQ)

Q: Can the BA15218 directly replace the TS522IN in all applications?

A: The BA15218 provides functional substitution for dual-channel amplification in the 8-DIP package. However, differences exist in performance characteristics. The BA15218 has lower slew rate (3 V/µs versus 7 V/µs) and lower gain bandwidth product (10 MHz versus 15 MHz). Applications sensitive to frequency response or transient performance require circuit validation. The BA15218 does not carry AEC-Q100 automotive qualification.

Q: What is the temperature limitation when using OP275GPZ as a substitute?

A: The OP275GPZ operates from -40°C to 85°C. The TS522IN operates to 125°C. Applications requiring operation above 85°C cannot use the OP275GPZ. Designs operating within the -40°C to 85°C window are compatible with the OP275GPZ temperature specification.

Q: Is the LT1208CN8#PBF suitable for low-temperature applications?

A: No. The LT1208CN8#PBF minimum operating temperature is 0°C. The TS522IN operates to -40°C. Applications requiring operation below 0°C cannot use the LT1208CN8#PBF. This substitute is limited to applications within the 0°C to 70°C temperature range.

Q: Are all substitute parts available in the same package format?

A: Yes. All substitute parts (BA15218, LT1208CN8#PBF, and OP275GPZ) are housed in 8-DIP packages with 0.300" (7.62mm) pitch. All are through-hole mounted components. PCB footprints are identical, enabling direct physical substitution without layout modification.

Q: What is the primary difference between the OP275GPZ and BA15218?

A: The OP275GPZ is classified as an audio amplifier, matching the TS522IN functional category. The BA15218 is a general-purpose amplifier. The OP275GPZ provides higher output current (90 mA per channel versus 50 mA for BA15218) and higher slew rate (22 V/µs versus 3 V/µs). For audio-specific applications, the OP275GPZ is the preferred substitute.

Q: Can the LT1208CN8#PBF be used in applications requiring the TS522IN's 4 mA supply current specification?

A: The LT1208CN8#PBF draws 7 mA supply current (specified as 7 mA × 2 channels). This is higher than the TS522IN specification of 4 mA. Power supply design and current budgeting must account for this increased consumption. Applications with strict power supply constraints may require circuit redesign.

Q: Are substitute parts RoHS compliant?

A: The OP275GPZ and BA15218 are ROHS3 compliant, matching the TS522IN specification. The LT1208CN8#PBF RoHS status is not specified in available documentation. Designs subject to RoHS compliance requirements should confirm the LT1208CN8#PBF status with Linear Technology or use the OP275GPZ or BA15218.

Q: What supply voltage range is common to all parts?

A: The overlapping supply voltage range across all four parts (TS522IN, BA15218, LT1208CN8#PBF, and OP275GPZ) is 5V to 30V. Applications operating within this range are compatible with all parts. The OP275GPZ requires minimum 9V, and the BA15218 operates down to 4V. The LT1208CN8#PBF operates up to 30V maximum.