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TSV321RIYLT Equivalent & Substitute Parts
Part Overview
The TSV321RIYLT 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 2.5 V to 6 V supply range with a 1.4 MHz gain bandwidth product and 0.6 V/µs slew rate. The device is qualified to AEC-Q100 automotive standards and maintains active product status. Equivalent and substitute parts are identified based on matching package type, output configuration, circuit count, and electrical performance parameters within acceptable operational ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | STMicroelectronics | — |
| Part Number | TSV321RIYLT | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | SC-74A, SOT-753 | — |
| Supplier Device Package | SOT-23-5 | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.6 | V/µs |
| Gain Bandwidth Product | 1.4 | MHz |
| Current - Input Bias | 70 | nA |
| Voltage - Input Offset | 200 | µV |
| Current - Supply | 500 | µA |
| Current - Output / Channel | 80 | mA |
| Voltage - Supply Span (Min) | 2.5 | V |
| Voltage - Supply Span (Max) | 6 | V |
| Operating Temperature | -40 to 125 | °C |
| Grade | Automotive | — |
| Qualification | AEC-Q100 | — |
| Product Status | Active | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the TSV321RIYLT are selected based on the following critical parameters:
Package Compatibility: All substitute parts must use SOT-23-5 surface mount packaging (SC-74A, SOT-753 case designation) to ensure mechanical and electrical compatibility with existing PCB layouts.
Circuit Configuration: Single-circuit, rail-to-rail output amplifiers only. Multi-circuit devices are excluded.
Supply Voltage Range: Substitute parts must operate within or encompass the 2.5 V to 6 V supply range of the original device. Parts with minimum supply voltages below 2.5 V or maximum supply voltages below 6 V may be used if the application operates within their specified range.
Operating Temperature: The TSV321RIYLT operates from -40°C to 125°C. Substitute parts with matching or extended temperature ranges are acceptable.
Electrical Performance: Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current are secondary selection criteria. Substitutes may have different performance characteristics provided they meet application requirements.
Compliance & Status: All substitute parts maintain active product status, ROHS3 compliance, and MSL 1 rating. Automotive-grade qualification is not required for substitution but is noted where applicable.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA/pA) | Input Offset (µV/mV) | Supply Current (µA/mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TSV321RIYLT | STMicroelectronics | General Purpose | 0.6 | 1.4 | 70 nA | 200 µV | 500 µA | 80 | 2.5 | 6 | -40 to 125 |
| AD8061ARTZ-REEL7 | Analog Devices Inc. | Voltage Feedback | 650 | 320 | 3.5 µA | 1 mV | 6.8 mA | 50 | 2.7 | 8 | -40 to 85 |
| AD8605ARTZ-R2 | Analog Devices Inc. | General Purpose | 5 | 10 | 0.2 pA | 80 µV | 1 mA | 80 | 2.7 | 5.5 | -40 to 125 |
| AD8605ARTZ-REEL | Analog Devices Inc. | General Purpose | 5 | 10 | 0.2 pA | 80 µV | 1 mA | 80 | 2.7 | 5.5 | -40 to 125 |
| AD8605ARTZ-REEL7 | Analog Devices Inc. | General Purpose | 5 | 10 | 0.2 pA | 80 µV | 1 mA | 80 | 2.7 | 5.5 | -40 to 125 |
| AZV831KTR-G1 | Diodes Incorporated | General Purpose | 0.45 | 1 | 1 pA | 500 µV | 70 µA | 185 | 1.6 | 5.5 | -40 to 85 |
| ISL28133FHZ-T7 | Renesas Electronics Corporation | Zero-Drift | 0.2 | 0.4 | 30 pA | 2 µV | 18 µA | 26 | 1.8 | 5.5 | -40 to 125 |
| ISL28133FHZ-T7A | Renesas Electronics Corporation | Zero-Drift | 0.2 | 0.4 | 30 pA | 2 µV | 18 µA | 26 | 1.8 | 5.5 | -40 to 125 |
| MCP6001RT-E/OT | Microchip Technology | General Purpose | 0.6 | 1 | 1 pA | 4.5 mV | 100 µA | 23 | 1.8 | 6 | -40 to 125 |
| MCP6001RT-I/OT | Microchip Technology | General Purpose | 0.6 | 1 | 1 pA | 4.5 mV | 100 µA | 23 | 1.8 | 6 | -40 to 85 |
| MCP6001T-E/OT | Microchip Technology | General Purpose | 0.6 | 1 | 1 pA | 4.5 mV | 100 µA | 23 | 1.8 | 6 | -40 to 125 |
Engineering Selection Recommendations
Primary Substitutes (Matched Electrical Performance):
The MCP6001T-E/OT, MCP6001RT-E/OT, and MCP6001RT-I/OT from Microchip Technology provide the closest electrical alignment to the TSV321RIYLT. These devices share identical slew rate (0.6 V/µs), similar gain bandwidth product (1 MHz vs. 1.4 MHz), and matching supply voltage range (1.8 V to 6 V encompasses the 2.5 V to 6 V requirement). All three maintain active product status, ROHS3 compliance, and MSL 1 rating. The MCP6001T-E/OT and MCP6001RT-E/OT support the full -40°C to 125°C operating temperature range matching the original device.
Secondary Substitutes (General Purpose, Extended Performance):
The AD8605ARTZ-R2, AD8605ARTZ-REEL, and AD8605ARTZ-REEL7 from Analog Devices Inc. are general-purpose amplifiers with superior performance characteristics. These devices offer higher slew rate (5 V/µs), higher gain bandwidth product (10 MHz), and significantly lower input offset voltage (80 µV). All three support the full -40°C to 125°C temperature range and maintain active status with ROHS3 compliance. The maximum supply voltage is 5.5 V, which accommodates the 2.5 V to 6 V range of the original device within typical application limits.
Specialized Substitutes (Zero-Drift Technology):
The ISL28133FHZ-T7 and ISL28133FHZ-T7A from Renesas Electronics Corporation employ zero-drift amplifier architecture, delivering exceptional input offset voltage (2 µV) and extremely low input bias current (30 pA). These devices support the full -40°C to 125°C operating temperature range and maintain active product status with ROHS3 compliance. The lower slew rate (0.2 V/µs) and reduced output current (26 mA) limit applicability to precision measurement and low-speed signal conditioning applications.
Alternative Substitutes (Low-Power Operation):
The AZV831KTR-G1 from Diodes Incorporated provides ultra-low supply current (70 µA) suitable for battery-powered applications. This device operates across an extended supply range (1.6 V to 5.5 V) and maintains active product status with ROHS3 compliance. The operating temperature range is -40°C to 85°C, which does not extend to 125°C. Higher input offset voltage (500 µV) and lower gain bandwidth product (1 MHz) restrict use to applications tolerating reduced precision.
High-Speed Alternative (Voltage Feedback):
The AD8061ARTZ-REEL7 from Analog Devices Inc. is a voltage feedback amplifier with significantly higher performance: 650 V/µs slew rate and 320 MHz gain bandwidth product. This device is suitable for high-frequency signal conditioning applications. The operating temperature range is -40°C to 85°C, and the maximum supply voltage is 8 V. Higher supply current (6.8 mA) and input bias current (3.5 µA) indicate this device is not optimized for low-power applications.
Frequently Asked Questions (FAQ)
Q: Can I directly replace TSV321RIYLT with any of these substitute parts?
A: Direct replacement requires verification that the substitute part operates within the application's electrical and thermal requirements. All listed substitutes share the SOT-23-5 package and rail-to-rail output configuration. However, differences in slew rate, gain bandwidth product, input offset voltage, and supply current may affect circuit performance. Functional testing is necessary to confirm suitability for the specific application.
Q: Which substitute offers the closest electrical match to the TSV321RIYLT?
A: The MCP6001T-E/OT provides the closest match with identical 0.6 V/µs slew rate, similar 1 MHz gain bandwidth product, and matching 1.8 V to 6 V supply range. This device supports the full -40°C to 125°C operating temperature range and maintains active product status with ROHS3 compliance.
Q: Are all substitute parts automotive-grade?
A: The TSV321RIYLT carries AEC-Q100 automotive qualification. None of the listed substitute parts explicitly state automotive qualification. If automotive-grade certification is required, the TSV321RIYLT should be retained or alternative sources consulted.
Q: What is the difference between the AD8605 variants (AD8605ARTZ-R2, AD8605ARTZ-REEL, AD8605ARTZ-REEL7)?
A: All three AD8605 variants share identical electrical specifications and belong to the DigiTrim® series. The differences are in packaging configuration: AD8605ARTZ-R2 uses Cut Tape & Digi-Reel®, while AD8605ARTZ-REEL and AD8605ARTZ-REEL7 also use Cut Tape & Digi-Reel® with different reel specifications. Electrical performance and temperature range are identical across all three.
Q: Can I use the ISL28133FHZ-T7 or ISL28133FHZ-T7A in place of the TSV321RIYLT?
A: These zero-drift amplifiers are suitable only for applications requiring exceptional input offset voltage precision (2 µV) and extremely low input bias current (30 pA). The significantly lower slew rate (0.2 V/µs), reduced output current (26 mA), and lower gain bandwidth product (400 kHz) make them unsuitable for general-purpose amplification at higher frequencies or higher output current demands.
Q: What is the impact of different supply current specifications?
A: Supply current directly affects power consumption and thermal dissipation. The TSV321RIYLT draws 500 µA, while the MCP6001 series draws 100 µA and the ISL28133 series draws only 18 µA. Lower supply current reduces power dissipation and is advantageous in battery-powered or thermally constrained applications. Higher supply current (such as the AD8061 at 6.8 mA) is typical of high-speed amplifiers and may require additional power supply capacity.
Q: Are all substitute parts RoHS3 compliant?
A: Yes, all listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of the TSV321RIYLT.
Q: What does "rail-to-rail" output mean?
A: Rail-to-rail output indicates the amplifier can swing its output voltage to within a small margin of both the positive and negative supply rails. All listed substitutes maintain this output configuration, ensuring compatibility with low-voltage supply applications.
Q: Can I use the AZV831KTR-G1 in a -40°C to 125°C application?
A: No. The AZV831KTR-G1 operates only from -40°C to 85°C. Applications requiring operation at temperatures above 85°C must use alternative substitutes with extended temperature ranges, such as the MCP6001T-E/OT, AD8605 variants, or ISL28133 series.
Q: What is the significance of input offset voltage differences?
A: Input offset voltage is the DC voltage difference between the inverting and non-inverting inputs when the output is at zero. The TSV321RIYLT specifies 200 µV, while the ISL28133 series specifies only 2 µV. Lower input offset voltage is critical for precision analog applications such as instrumentation and sensor signal conditioning. Higher input offset voltage is acceptable for general-purpose applications with adequate gain and feedback compensation.
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