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OPA4348AIPWR Equivalent & Substitute Parts
Part Overview
The OPA4348AIPWR is a CMOS rail-to-rail operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in a 14-TSSOP surface mount package. This device is classified as a linear amplifier and maintains active product status. The OPA4348AIPWR is specified for applications requiring low-power CMOS amplification with rail-to-rail output capability across a 2.1V to 5.5V supply range and operating temperatures from -40°C to 125°C. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and functional equivalence within the operational amplifier category.
Substiute Parts
Key Parameters
| Parameter | OPA4348AIPWR |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Linear, Amplifiers |
| Amplifier Type | CMOS |
| Number of Circuits | 4 |
| Output Type | Rail-to-Rail |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| Slew Rate | 0.5V/µs |
| Gain Bandwidth Product | 1 MHz |
| Current - Input Bias | 0.5 pA |
| Voltage - Input Offset | 1 mV |
| Current - Supply | 45µA (x4 Channels) |
| Current - Output / Channel | 10 mA |
| Voltage - Supply Span (Min) | 2.1 V |
| Voltage - Supply Span (Max) | 5.5 V |
| Operating Temperature | -40°C ~ 125°C |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) |
Substitute Part Grouping Explanation
Substitute parts for the OPA4348AIPWR are selected based on the following critical parameters that determine functional equivalence:
Primary Matching Criteria:
- Number of circuits: 4 channels
- Package type: 14-TSSOP surface mount configuration
- Output type: Rail-to-Rail capability
- Operating temperature range: -40°C to 125°C minimum
- Supply voltage compatibility: Overlap within 2.1V to 5.5V range
Secondary Performance Parameters:
- Slew rate: 0.5V/µs or greater
- Gain bandwidth product: 1 MHz or greater
- Input bias current: Low leakage (pA range preferred)
- Input offset voltage: 1 mV or lower
- Supply current: Comparable to 45µA per 4 channels
- Output current capability: 10 mA or greater per channel
Substitute parts are grouped into two categories: direct functional equivalents with matching electrical specifications, and performance-enhanced alternatives that exceed the OPA4348AIPWR specifications while maintaining package and pin compatibility.
Parameter Comparison
| Parameter | OPA4348AIPWR | NCS20084DTBR2G | AD8544ARUZ | AD8544ARUZ-REEL | AD8648ARUZ | AD8648ARUZ-REEL | BU7487FV-E2 | LMV324DTBR2G | LMV324LIPT | LMV324TSG-13 | LMX324IPT |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | onsemi | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Rohm Semiconductor | onsemi | STMicroelectronics | Diodes Incorporated | STMicroelectronics |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Package / Case | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-LSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Slew Rate | 0.5V/µs | 0.4V/µs | 0.92V/µs | 0.92V/µs | 11V/µs | 11V/µs | 10V/µs | 1V/µs | 0.7V/µs | 1V/µs | 0.7V/µs |
| Gain Bandwidth Product | 1 MHz | 1.2 MHz | 1 MHz | 1 MHz | 24 MHz | 24 MHz | 10 MHz | 1 MHz | 1.3 MHz | 1 MHz | 1.3 MHz |
| Current - Input Bias | 0.5 pA | 1 pA | 4 pA | 4 pA | 0.3 pA | 0.3 pA | 1 pA | 1 nA | 27 nA | 15 nA | 27 nA |
| Voltage - Input Offset | 1 mV | 500 µV | 1 mV | 1 mV | 600 µV | 600 µV | 1 mV | 1.7 mV | 1 mV | 1.7 mV | 4 mV |
| Current - Supply | 45µA (x4) | 48µA (x4) | 45µA (x4) | 45µA (x4) | 1.5mA (x4) | 1.5mA (x4) | 6mA | 100µA (x4) | 130µA (x4) | 340µA (x4) | 130µA (x4) |
| Current - Output / Channel | 10 mA | 15 mA | 30 mA | 30 mA | 120 mA | 120 mA | 12 mA | 160 mA | 70 mA | 90 mA | 70 mA |
| Voltage - Supply Span (Min) | 2.1 V | 1.8 V | 2.7 V | 2.7 V | 2.7 V | 2.7 V | 3 V | 2.7 V | 2.7 V | 2.7 V | 2.3 V |
| Voltage - Supply Span (Max) | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 105°C | -40°C ~ 85°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 2 (1 Year) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Direct Functional Equivalents (Matched Performance):
The NCS20084DTBR2G (onsemi) and AD8544ARUZ / AD8544ARUZ-REEL (Analog Devices Inc.) provide direct functional equivalence to the OPA4348AIPWR. These devices maintain comparable slew rates (0.4V/µs to 0.92V/µs), gain bandwidth products (1 to 1.2 MHz), and supply current specifications (45µA to 48µA per 4 channels). All three parts are ROHS3 compliant, active products in 14-TSSOP packages with rail-to-rail output capability and -40°C to 125°C operating temperature ranges. The NCS20084DTBR2G includes AEC-Q100 automotive qualification. The AD8544ARUZ variants offer MSL 1 (Unlimited) moisture sensitivity compared to the OPA4348AIPWR MSL 2 (1 Year).
Performance-Enhanced Alternatives:
The AD8648ARUZ and AD8648ARUZ-REEL (Analog Devices Inc.) provide enhanced performance with 11V/µs slew rate and 24 MHz gain bandwidth product, suitable for applications requiring higher speed operation. These devices maintain the same 14-TSSOP package, rail-to-rail output, and -40°C to 125°C temperature range, with increased output current capability (120 mA per channel versus 10 mA). Both are ROHS3 compliant with MSL 1 (Unlimited).
The BU7487FV-E2 (Rohm Semiconductor) offers 10V/µs slew rate and 10 MHz gain bandwidth product in a 14-LSSOP package variant. Operating temperature is limited to -40°C to 105°C, and minimum supply voltage is 3V (versus 2.1V for the OPA4348AIPWR).
General Purpose Alternatives:
The LMV324 series (onsemi, STMicroelectronics, Diodes Incorporated) and LMX324IPT (STMicroelectronics) provide general purpose amplification in 14-TSSOP packages with rail-to-rail output and -40°C to 125°C operating ranges. These devices feature higher output current capability (70 mA to 160 mA per channel) and are ROHS3 compliant with MSL 1 (Unlimited). The LMV324DTBR2G has MSL 3 (168 Hours). Supply current ranges from 100µA to 340µA per 4 channels, higher than the OPA4348AIPWR.
All substitute parts maintain active product status and ROHS3 compliance. Selection should be based on specific application requirements for slew rate, bandwidth, output current, and supply current characteristics.
Frequently Asked Questions (FAQ)
Q: Can the NCS20084DTBR2G directly replace the OPA4348AIPWR in existing designs?
A: The NCS20084DTBR2G is functionally equivalent in 14-TSSOP package configuration, pin count, and rail-to-rail output capability. Both devices operate across overlapping supply voltage ranges (1.8V to 5.5V for NCS20084DTBR2G versus 2.1V to 5.5V for OPA4348AIPWR) and -40°C to 125°C temperature ranges. The NCS20084DTBR2G has slightly lower slew rate (0.4V/µs versus 0.5V/µs) and higher input bias current (1 pA versus 0.5 pA). Pin-to-pin compatibility exists for standard operational amplifier configurations.
Q: What is the difference between AD8544ARUZ and AD8544ARUZ-REEL?
A: Both AD8544ARUZ and AD8544ARUZ-REEL are identical in electrical specifications and 14-TSSOP package configuration. The difference is in packaging format: AD8544ARUZ is supplied in Tube packaging, while AD8544ARUZ-REEL is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical performance, operating temperature range (-40°C to 125°C), and compliance specifications are identical.
Q: When should the AD8648ARUZ be selected over the OPA4348AIPWR?
A: The AD8648ARUZ is selected for applications requiring higher speed operation. It provides 11V/µs slew rate (versus 0.5V/µs), 24 MHz gain bandwidth product (versus 1 MHz), and 120 mA output current per channel (versus 10 mA). These enhanced specifications support higher frequency signal processing and higher load driving capability. The trade-off is increased supply current (1.5mA per 4 channels versus 45µA). Both maintain 14-TSSOP package compatibility and -40°C to 125°C operating range.
Q: Are all substitute parts ROHS3 compliant?
A: All listed substitute parts are ROHS3 compliant. The OPA4348AIPWR is also ROHS3 compliant. REACH status is unaffected for all parts.
Q: What is the significance of Moisture Sensitivity Level (MSL) differences?
A: The OPA4348AIPWR has MSL 2 (1 Year), indicating the component must be used within one year of the moisture barrier bag opening. Most substitute parts have MSL 1 (Unlimited), allowing indefinite shelf life after bag opening. The LMV324DTBR2G has MSL 3 (168 Hours), requiring use within 168 hours of bag opening. MSL affects storage and handling requirements in manufacturing environments.
Q: Can the LMV324 series replace the OPA4348AIPWR?
A: The LMV324 series (LMV324DTBR2G, LMV324LIPT, LMV324TSG-13) provides functional replacement in 14-TSSOP packages with rail-to-rail output and -40°C to 125°C operating ranges. However, supply current is significantly higher (100µA to 340µA per 4 channels versus 45µA), and output current capability is substantially greater (70 mA to 160 mA per channel versus 10 mA). These devices are suitable for applications where higher output current is required. The LMV324DTBR2G is limited to -40°C to 85°C operating temperature.
Q: What packaging options are available for substitute parts?
A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel® (OPA4348AIPWR, AD8544ARUZ-REEL, AD8648ARUZ-REEL, BU7487FV-E2, LMV324DTBR2G, LMV324LIPT, LMX324IPT), Tube (AD8544ARUZ, AD8648ARUZ), and Tape & Reel (TR) (NCS20084DTBR2G, LMV324TSG-13). All substitute parts maintain 14-TSSOP or 14-LSSOP surface mount package configurations compatible with standard PCB assembly processes.
Q: Is the BU7487FV-E2 suitable for all temperature ranges required by the OPA4348AIPWR?
A: The BU7487FV-E2 operates from -40°C to 105°C, which is narrower than the OPA4348AIPWR range of -40°C to 125°C. Applications requiring operation above 105°C cannot use the BU7487FV-E2. Additionally, the BU7487FV-E2 requires minimum supply voltage of 3V, compared to 2.1V for the OPA4348AIPWR, limiting use in lower voltage applications.
Q: What is the difference between CMOS and General Purpose amplifier types?
A: The OPA4348AIPWR is specified as CMOS type, characterized by extremely low input bias current (0.5 pA). General Purpose amplifiers in the substitute list (AD8544ARUZ, AD8648ARUZ, LMV324 series, LMX324IPT) have higher input bias currents (4 pA to 27 nA) but may offer other performance advantages such as higher slew rate or output current. CMOS type is preferred for applications sensitive to input bias current effects.
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