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TSV634IPT Equivalent & Substitute Parts
Part Overview
The TSV634IPT is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring four independent circuits in a 14-TSSOP surface-mount package. This rail-to-rail amplifier operates across a supply voltage range of 1.5 V to 5.5 V and is qualified to AEC-Q100 automotive standards. The device is currently in active production status with substantial inventory availability.
Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters, particularly when the primary part is unavailable, when alternative packaging formats are required, or when design requirements necessitate different performance characteristics within acceptable operational boundaries.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | STMicroelectronics | — |
| Part Number | TSV634IPT | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Voltage - Supply Span (Min) | 1.5 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Slew Rate | 0.34 | V/µs |
| Gain Bandwidth Product | 880 | kHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 3 | mV |
| Current - Supply | 50 | µA (x4 Channels) |
| Current - Output / Channel | 74 | mA |
| Operating Temperature | -40 to 125 | °C |
| Grade | Automotive | — |
| Qualification | AEC-Q100 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the TSV634IPT are identified based on the following critical parameters that determine functional equivalence:
Primary Substitution Criteria:
- Number of Circuits: 4 independent amplifier circuits
- Package / Case: 14-TSSOP surface-mount configuration
- Output Type: Rail-to-Rail capability
- Mounting Type: Surface Mount
- Operating Temperature Range: -40°C to 125°C minimum
- Voltage Supply Span: Minimum 1.5 V to 5.5 V maximum (or compatible subset)
Secondary Performance Parameters:
- Slew Rate: 0.34 V/µs or greater
- Gain Bandwidth Product: 880 kHz or greater
- Current - Output / Channel: 74 mA or greater
- Current - Supply: 50 µA per channel or less (lower is preferable)
Substitute parts are grouped into two categories: General Purpose amplifiers (matching the TSV634IPT amplifier type) and CMOS amplifiers (offering enhanced performance characteristics). All substitute parts maintain the 14-TSSOP package format and surface-mount configuration. Packaging variants (Tube versus Cut Tape & Digi-Reel) are noted but do not affect electrical equivalence.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TSV634IPT | STMicroelectronics | General Purpose | 0.34 | 0.88 | 1 | 3 | 50 | 74 | 1.5 | 5.5 | -40 to 125 | Cut Tape & Digi-Reel |
| AD8544ARUZ | Analog Devices Inc. | General Purpose | 0.92 | 1 | 4 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | Tube |
| AD8544ARUZ-REEL | Analog Devices Inc. | General Purpose | 0.92 | 1 | 4 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | Cut Tape & Digi-Reel |
| AD8604ARUZ | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 0.08 | 750 | 50 | 2.7 | 5.5 | -40 to 125 | Tube |
| AD8604DRUZ | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 1.3 | 750 | 50 | 2.7 | 5.5 | -40 to 125 | Tube |
| AD8604DRUZ-REEL | Analog Devices Inc. | CMOS | 6 | 8.4 | 0.2 | 1.3 | 750 | 50 | 2.7 | 5.5 | -40 to 125 | Cut Tape & Digi-Reel |
| BD12734FVJ-E2 | Rohm Semiconductor | General Purpose | 0.4 | 1 | 50 | 1 | 1200 | 12 | 1.8 | 5 | -40 to 85 | Cut Tape & Digi-Reel |
| ISL28413FVZ | Renesas Electronics Corporation | General Purpose | 1 | 2 | 3 | 0.5 | 90 | 22 | 1.8 | 5.5 | -40 to 125 | Tube |
| ISL28414FVZ | Renesas Electronics Corporation | General Purpose | 2.5 | 5 | 3 | 0.5 | 300 | 31 | 1.8 | 5.5 | -40 to 125 | Tube |
| LMR934FVJ-E2 | Rohm Semiconductor | General Purpose | 0.35 | 1.4 | 5 | 1 | 250 | 90 | 1.8 | 5 | -40 to 85 | Cut Tape & Digi-Reel |
| LMV344IPW | Texas Instruments | CMOS | 1 | 1 | 1 | 0.25 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | Tube |
Engineering Selection Recommendations
General Purpose Amplifier Substitutes (Closest Functional Match):
The AD8544ARUZ and AD8544ARUZ-REEL represent the most direct substitutes for the TSV634IPT. Both devices maintain general-purpose amplifier classification, four-circuit configuration, and full -40°C to 125°C operating temperature range. The AD8544ARUZ-REEL variant offers identical electrical specifications with Cut Tape & Digi-Reel packaging, matching the TSV634IPT packaging format. The primary trade-off is a minimum supply voltage of 2.7 V versus the TSV634IPT's 1.5 V minimum, which is acceptable for applications not requiring ultra-low voltage operation.
The ISL28413FVZ and ISL28414FVZ from Renesas Electronics provide general-purpose amplifier functionality with extended performance characteristics. Both maintain the full -40°C to 125°C temperature range and support 1.8 V minimum supply voltage. The ISL28414FVZ offers significantly higher slew rate (2.5 V/µs) and gain bandwidth product (5 MHz) compared to the TSV634IPT, suitable for applications requiring enhanced dynamic performance.
The LMR934FVJ-E2 from Rohm Semiconductor provides general-purpose amplifier performance with slew rate and gain bandwidth product closely matching the TSV634IPT (0.35 V/µs and 1.4 MHz respectively). However, this device operates only to 85°C maximum temperature and is packaged in Cut Tape & Digi-Reel format. The BD12734FVJ-E2 from Rohm Semiconductor also operates to 85°C maximum and exhibits significantly higher supply current consumption (1.2 mA total), limiting its suitability for low-power applications.
CMOS Amplifier Substitutes (Enhanced Performance):
The AD8604 series (AD8604ARUZ, AD8604DRUZ, AD8604DRUZ-REEL) from Analog Devices represents a performance-enhanced alternative using CMOS technology. These devices deliver substantially higher slew rate (6 V/µs) and gain bandwidth product (8.4 MHz) with significantly lower input bias current (0.2 pA). The trade-off is increased supply current consumption (750 µA total versus 50 µA for the TSV634IPT). The AD8604DRUZ-REEL variant provides Cut Tape & Digi-Reel packaging compatibility.
The LMV344IPW from Texas Instruments is a CMOS amplifier with 1 V/µs slew rate and 1 MHz gain bandwidth product. This device is currently in Last Time Buy status, indicating discontinued production. The minimum supply voltage is 2.5 V, and supply current consumption is 107 µA per channel.
Compliance and Certification:
All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the TSV634IPT. The TSV634IPT carries AEC-Q100 automotive qualification; substitute parts do not carry this certification. Applications requiring automotive-grade qualification must retain the TSV634IPT or verify alternative qualification status with the respective manufacturer.
Moisture sensitivity levels are MSL 1 (Unlimited) for most substitutes, matching the TSV634IPT. The ISL28413FVZ and ISL28414FVZ carry MSL 2 (1 Year), requiring controlled storage conditions.
Frequently Asked Questions (FAQ)
Q: Can the AD8544ARUZ-REEL directly replace the TSV634IPT in all applications?
A: The AD8544ARUZ-REEL is electrically compatible for applications operating at supply voltages of 2.7 V or higher. The TSV634IPT supports operation down to 1.5 V supply voltage, which the AD8544ARUZ-REEL does not. If your application operates exclusively within the 2.7 V to 5.5 V range, the AD8544ARUZ-REEL is a direct substitute with identical packaging format. Verify your circuit's minimum supply voltage requirement before substitution.
Q: What is the primary advantage of CMOS amplifier substitutes like the AD8604DRUZ-REEL?
A: CMOS amplifiers offer significantly higher slew rate (6 V/µs versus 0.34 V/µs) and gain bandwidth product (8.4 MHz versus 0.88 MHz), enabling faster signal processing and higher-frequency operation. The trade-off is substantially higher supply current consumption (750 µA total versus 50 µA for the TSV634IPT). Select CMOS substitutes only when your application requires enhanced dynamic performance and can accommodate the increased power consumption.
Q: Why do some substitute parts have maximum operating temperatures of only 85°C?
A: The BD12734FVJ-E2 and LMR934FVJ-E2 from Rohm Semiconductor are specified for -40°C to 85°C operation, compared to the TSV634IPT's -40°C to 125°C range. These devices are not suitable for applications requiring operation above 85°C. Verify your application's maximum operating temperature requirement before selecting these substitutes.
Q: Is the TSV634IPT's AEC-Q100 automotive qualification available in substitute parts?
A: None of the listed substitute parts carry AEC-Q100 automotive qualification. If your application requires automotive-grade qualification, the TSV634IPT must be retained. Contact the respective manufacturers (Analog Devices, Renesas, Rohm, Texas Instruments) to determine if alternative qualified variants exist for your specific application.
Q: What is the significance of packaging format differences (Tube versus Cut Tape & Digi-Reel)?
A: Packaging format affects handling, storage, and assembly processes but does not alter electrical performance. Tube packaging is suitable for lower-volume applications and manual assembly. Cut Tape & Digi-Reel packaging is optimized for high-volume automated assembly. The TSV634IPT is supplied in Cut Tape & Digi-Reel format. Substitute parts offering identical packaging (AD8544ARUZ-REEL, AD8604DRUZ-REEL, BD12734FVJ-E2, LMR934FVJ-E2) integrate seamlessly into existing assembly processes.
Q: Can I use the ISL28414FVZ as a drop-in replacement for the TSV634IPT?
A: The ISL28414FVZ is not a drop-in replacement due to packaging format differences (Tube versus Cut Tape & Digi-Reel) and different performance characteristics. However, it is electrically compatible for applications operating within the 1.8 V to 5.5 V supply range and -40°C to 125°C temperature range. The ISL28414FVZ offers superior slew rate (2.5 V/µs) and gain bandwidth product (5 MHz) but requires higher supply current (300 µA total). Evaluate your assembly process requirements and performance needs before selection.
Q: What does "Last Time Buy" status mean for the LMV344IPW?
A: Last Time Buy status indicates that the manufacturer (Texas Instruments) has discontinued production and will no longer accept new orders after a specified date. Existing inventory may be available from distributors, but long-term availability is not guaranteed. Avoid selecting the LMV344IPW for new designs unless existing stock is confirmed and long-term supply is not critical.
Q: How do input offset voltage differences affect circuit performance?
A: Input offset voltage determines the DC error at the amplifier output when no signal is applied. The TSV634IPT specifies 3 mV maximum offset, while substitutes range from 0.08 mV (AD8604ARUZ) to 1.3 mV (AD8604DRUZ). Lower offset voltage reduces DC error and improves precision in applications such as instrumentation and sensor signal conditioning. For general-purpose applications with AC coupling or high-gain stages, offset voltage differences are typically negligible. For precision DC applications, select substitutes with lower offset voltage specifications.
Q: What is the impact of supply current differences on battery-powered applications?
A: Supply current directly affects power consumption and battery life in portable applications. The TSV634IPT draws 50 µA total (12.5 µA per channel). The AD8604 series draws 750 µA total (187.5 µA per channel), representing a 15-fold increase. For battery-powered designs, the TSV634IPT or low-power substitutes (AD8544ARUZ at 45 µA, ISL28413FVZ at 90 µA) are preferable. High-performance CMOS substitutes are suitable only for applications where power consumption is not a constraint.
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