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TS272AIN CMOS Amplifier Equivalent & Substitute Parts
Part Overview
The TS272AIN is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a 2-circuit operational amplifier in an 8-Mini DIP package. This device is classified as obsolete, indicating discontinuation from active production. The TS272AIN operates across a wide supply voltage range of 3V to 16V with a slew rate of 5.5V/µs and gain bandwidth product of 3.5 MHz, making it suitable for general-purpose analog signal conditioning applications.
Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for new designs, production continuity, and long-term component availability. Texas Instruments LinCMOS™ series devices provide functional alternatives with comparable electrical characteristics and identical 8-DIP packaging.
Substiute Parts
Key Parameters
| Parameter | TS272AIN Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Slew Rate | 5.5 | V/µs |
| Gain Bandwidth Product | 3.5 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 900 | µV |
| Current - Supply (x2 Channels) | 1 | mA |
| Current - Output / Channel | 45 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package / Case | 8-DIP (0.300", 7.62mm) | — |
| Mounting Type | Through Hole | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the TS272AIN is determined by the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: CMOS
- Number of Circuits: 2
- Package / Case: 8-DIP (0.300", 7.62mm)
- Mounting Type: Through Hole
- Voltage - Supply Span: Minimum 3V, Maximum 16V
Secondary Compatibility Parameters:
- Slew Rate: 5.5V/µs (TS272AIN baseline)
- Gain Bandwidth Product: 3.5 MHz (TS272AIN baseline)
- Current - Input Bias: 1 pA (TS272AIN baseline)
- Voltage - Input Offset: 900 µV (TS272AIN baseline)
- Operating Temperature Range: -40°C to 125°C (TS272AIN baseline)
Substitute parts are grouped into two categories based on electrical performance alignment:
Category A - High Performance Substitutes: Parts with slew rate ≥5.0V/µs and gain bandwidth product ≥2.0 MHz, matching the TS272AIN's performance envelope. These include TLC272ACP and TLC272AIP.
Category B - Functional Substitutes: Parts with lower slew rate and gain bandwidth product but maintaining 2-circuit CMOS configuration in 8-DIP package. These include TLC1078CP, TLC1078IP, TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, and TLC25M2CP.
Specialized Substitute: TLC2652CP is a single-circuit zero-drift amplifier and does not qualify as a direct substitute due to different circuit count and amplifier type.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Number of Circuits | Slew Rate (V/µs) | Gain Bandwidth Product (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TS272AIN | STMicroelectronics | CMOS | 2 | 5.5 | 3.5 | 1 | 900 | 1 | 45 | 3 | 16 | -40 to 125 | Obsolete |
| TLC272ACP | Texas Instruments | CMOS | 2 | 5.3 | 2.2 | 0.7 | 900 | 1.9 | 30 | 3 | 16 | 0 to 70 | Active |
| TLC272AIP | Texas Instruments | CMOS | 2 | 5.3 | 2.2 | 0.7 | 900 | 1.4 | 30 | 4 | 16 | -40 to 85 | Active |
| TLC252BCP | Texas Instruments | CMOS | 2 | 2.9 | 2.2 | 0.6 | 290 | 1.9 | — | 1.4 | 16 | 0 to 70 | Last Time Buy |
| TLC25L2BCP | Texas Instruments | CMOS | 2 | 2.9 | 0.11 | 0.7 | 235 | 0.029 | — | 1.4 | 16 | 0 to 70 | Last Time Buy |
| TLC25L2CP | Texas Instruments | CMOS | 2 | 2.9 | 0.11 | 0.7 | 1100 | 0.029 | — | 1.4 | 16 | 0 to 70 | Last Time Buy |
| TLC25M2ACP | Texas Instruments | CMOS | 2 | 2.9 | 1.7 | 0.7 | 900 | 0.285 | — | 1.4 | 16 | 0 to 70 | Last Time Buy |
| TLC25M2CP | Texas Instruments | CMOS | 2 | 2.9 | 1.7 | 0.7 | 1100 | 0.285 | — | 1.4 | 16 | 0 to 70 | Last Time Buy |
| TLC1078CP | Texas Instruments | CMOS | 2 | 0.032 | 0.11 | 1 | 180 | 0.029 | 30 | 1.4 | 16 | 0 to 70 | Active |
| TLC1078IP | Texas Instruments | CMOS | 2 | 0.032 | 0.11 | 1 | 180 | 0.029 | 30 | 3 | 16 | -40 to 85 | Active |
Engineering Selection Recommendations
Primary Recommendation: TLC272AIP
The TLC272AIP is the preferred substitute for the TS272AIN. This device maintains the closest electrical performance alignment with slew rate of 5.3V/µs and gain bandwidth product of 2.2 MHz. The TLC272AIP operates across an extended temperature range of -40°C to 85°C, providing coverage for the TS272AIN's lower temperature limit. Both devices share identical 8-DIP package configuration and through-hole mounting. The TLC272AIP holds Active product status from Texas Instruments, ensuring long-term availability and supply continuity. RoHS3 compliance and REACH unaffected status match the original part's regulatory standing.
Secondary Recommendation: TLC272ACP
The TLC272ACP provides equivalent electrical performance to TLC272AIP with identical slew rate and gain bandwidth product specifications. This device is suitable for applications operating within the 0°C to 70°C temperature range. The TLC272ACP maintains Active product status and identical packaging. Supply voltage minimum is 3V, matching the TS272AIN specification.
Alternative for Low-Power Applications: TLC1078IP
The TLC1078IP is suitable for applications where reduced power consumption is prioritized over high-speed performance. This device operates with supply current of 29µA per channel compared to the TS272AIN's 1mA per channel. The TLC1078IP maintains Active product status and operates across -40°C to 85°C temperature range. However, slew rate of 0.032V/µs and gain bandwidth product of 110 kHz represent significant performance reduction and are applicable only to low-frequency signal conditioning.
Not Recommended: TLC2652CP
The TLC2652CP is a single-circuit zero-drift amplifier and does not qualify as a substitute due to different circuit count (1 vs. 2) and amplifier type classification.
Frequently Asked Questions (FAQ)
Q: Can TLC272ACP be used as a direct replacement for TS272AIN in all applications?
A: TLC272ACP is electrically compatible with TS272AIN in applications operating within 0°C to 70°C. The slew rate of 5.3V/µs and gain bandwidth product of 2.2 MHz are within acceptable tolerance of the original 5.5V/µs and 3.5 MHz specifications. However, applications requiring operation below 0°C or above 70°C require TLC272AIP instead.
Q: What is the difference between TLC272ACP and TLC272AIP?
A: Both devices share identical electrical specifications including slew rate (5.3V/µs) and gain bandwidth product (2.2 MHz). The primary differences are operating temperature range and minimum supply voltage. TLC272AIP operates from -40°C to 85°C with 4V minimum supply, while TLC272ACP operates from 0°C to 70°C with 3V minimum supply. TLC272AIP is recommended for extended temperature applications.
Q: Why is TLC1078IP not recommended as a primary substitute?
A: While TLC1078IP maintains 2-circuit CMOS configuration in 8-DIP package, its slew rate of 0.032V/µs and gain bandwidth product of 110 kHz represent a 170-fold reduction in bandwidth performance compared to TS272AIN. This device is suitable only for DC and very low-frequency applications. Applications requiring the TS272AIN's 3.5 MHz bandwidth cannot use TLC1078IP.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended substitute parts (TLC272ACP, TLC272AIP, TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, TLC25M2CP, TLC1078CP, and TLC1078IP) are RoHS3 compliant and REACH unaffected, matching the TS272AIN's regulatory compliance status.
Q: What is the significance of "Last Time Buy" product status for TLC252BCP and TLC25L2 series?
A: "Last Time Buy" status indicates these devices are in final production phases with limited availability. While electrically functional, these parts should not be selected for new designs requiring long-term component availability. TLC272ACP and TLC272AIP with Active status are preferred for new production.
Q: Can substitute parts be used in existing PCB designs without modification?
A: Yes. All recommended substitute parts maintain identical 8-DIP (0.300", 7.62mm) package configuration and through-hole mounting type. Pin-to-pin compatibility is maintained, allowing direct socket substitution without PCB redesign. However, electrical performance differences (particularly slew rate and bandwidth) should be verified against application requirements.
Q: What output current capability should be considered when selecting a substitute?
A: The TS272AIN provides 45 mA output current per channel. TLC272ACP and TLC272AIP provide 30 mA per channel, representing a 33% reduction. Applications requiring output currents exceeding 30 mA per channel must be redesigned with external buffering or alternative amplifier selection. TLC1078CP and TLC1078IP also provide 30 mA output current.
Q: How do input offset voltage specifications affect substitution?
A: The TS272AIN specifies 900 µV input offset voltage. TLC272ACP and TLC272AIP maintain this specification. TLC1078CP and TLC1078IP provide superior offset voltage of 180 µV, beneficial for precision applications. TLC25L2 and TLC25M2 series show offset voltage variation (235 µV to 1.1 mV) depending on specific part number. Applications with tight offset voltage requirements should verify substitute specifications against design tolerances.
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