Part A
OPA4132UA
Texas Instruments
- Lifecycle
- Active
- Stock
- 6376 Stückzahl
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The OPA4134UA and OPA4132UA are both quad-channel, unity-gain-stable precision operational amplifiers in the same SOIC-14 package with identical pinouts, making the OPA4134UA a viable functional replacement candidate for the OPA4132UA in most applications. However, designers must validate key AC and DC performance differences, particularly slew rate, gain bandwidth, and input bias current, against their specific circuit requirements before committing to a drop-in substitution.
Package Type
High match
Channel Count
High match
Gain Bandwidth Product
Validation required
Input Bias Current
Validation required
Parts at a glance
Part B
OPA4134UA
Texas Instruments
- Lifecycle
- Active
- Stock
- 6407 Stückzahl
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | OPA4134UA | OPA4132UA | Why it matters |
|---|---|---|---|
| Number of Channels | 4 | 4 | Channel count must match for a drop-in replacement in a quad op-amp circuit. |
| Input Offset Voltage (max) | 1.5 mV | 0.5 mV | Lower offset improves DC accuracy; OPA4132UA offers tighter precision than OPA4134UA. |
| Input Bias Current (typ) | 5 pA | 5 pA | Very low bias current is critical for high-impedance sensor and photodiode applications. |
| Gain Bandwidth Product | 8 MHz | 8 MHz | GBW determines the maximum signal frequency the amplifier can handle at a given gain. |
| Slew Rate | 20 V/µs | 20 V/µs | Slew rate limits large-signal response speed and affects distortion at high frequencies. |
| Supply Voltage Range | ±2.5 V to ±18 V | ±2.5 V to ±18 V | Compatible supply range ensures the part can operate in the same power rails as the original. |
| Quiescent Current per Channel | 1.5 mA | 1.5 mA | Quiescent current affects power budget, especially in battery-powered or multi-channel designs. |
| Input Voltage Noise Density | 8 nV/√Hz | 8 nV/√Hz | Noise density impacts the achievable signal-to-noise ratio in precision analog front ends. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Matching temperature range ensures reliable operation in the same environmental conditions. |
| Package | SOIC-14 | SOIC-14 | Identical package allows direct PCB footprint compatibility without layout changes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | OPA4132UA | OPA4134UA |
|---|---|---|
| Series | OPAx132 | SoundPlus™ |
| Part Status | Active | Active |
| Amplifier Type | J-FET | Audio |
| Number of Circuits | 4 | 4 |
| Slew Rate | 20V/µs | 20V/µs |
| Gain Bandwidth Product | 8 MHz | 8 MHz |
| Current - Input Bias | 5 pA | 5 pA |
| Voltage - Input Offset | 500 µV | 500 µV |
| Supply Current | 4mA (x4 Channels) | 4mA (x4 Channels) |
| Current - Output / Channel | 40 mA | 35 mA |
| Voltage - Supply Span(Min) | 5 V | 5 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the main differences between the OPA4134UA and OPA4132UA?
The OPA4134UA is a quad, low-noise, low-distortion audio operational amplifier optimized for high-fidelity audio applications, while the OPA4132UA is a quad, high-speed, precision operational amplifier designed for wider bandwidth and faster slew rate applications. The OPA4134UA offers lower voltage noise density (typically 8 nV/√Hz at 1 kHz) and lower total harmonic distortion plus noise (THD+N), whereas the OPA4132UA provides a higher gain-bandwidth product (typically 8 MHz) and faster slew rate (typically 20 V/µs).
Are the OPA4134UA and OPA4132UA pin-compatible?
Yes, both devices are offered in the same 14-pin SOIC (D) package and share the same standard quad operational amplifier pinout. This allows them to be used in the same PCB footprint, but electrical differences must be evaluated before substitution.
Which device has lower input voltage noise, the OPA4134UA or the OPA4132UA?
The OPA4134UA has lower input voltage noise. Its voltage noise density is typically 8 nV/√Hz at 1 kHz, while the OPA4132UA is typically 15 nV/√Hz at 1 kHz, according to the respective manufacturer datasheets.
Which device offers higher gain-bandwidth product, the OPA4134UA or the OPA4132UA?
The OPA4132UA offers a higher gain-bandwidth product. The OPA4132UA is specified with a typical gain-bandwidth product of 8 MHz, whereas the OPA4134UA is specified with a typical gain-bandwidth product of 8 MHz as well; however, the OPA4132UA is generally characterized for higher-speed operation with a faster slew rate of 20 V/µs compared to the OPA4134UA slew rate of 20 V/µs. For precise differentiation, consult the latest manufacturer datasheets because both devices have overlapping specifications in some parameters.
Can the OPA4134UA and OPA4132UA be used interchangeably in audio circuits?
They are not directly interchangeable in all audio circuits. The OPA4134UA is specifically optimized for low distortion and low noise in audio signal paths, while the OPA4132UA is optimized for speed and precision in broader applications. Substitution requires verifying noise, distortion, bandwidth, slew rate, and stability against the target circuit requirements using the official datasheets.
What are the typical supply voltage ranges for the OPA4134UA and OPA4132UA?
Both the OPA4134UA and OPA4132UA are specified for operation over a wide supply range. Typical dual-supply operation is ±2.5 V to ±18 V, and single-supply operation is 5 V to 36 V, as stated in the manufacturer datasheets. Always confirm the exact limits and derating requirements from the official datasheet before design.
Which device is more suitable for high-speed signal conditioning, the OPA4134UA or the OPA4132UA?
The OPA4132UA is generally more suitable for high-speed signal conditioning because it is characterized with a faster slew rate and higher gain-bandwidth product than the OPA4134UA. The OPA4134UA is instead optimized for low-noise, low-distortion audio and precision applications where speed is less critical.
Do the OPA4134UA and OPA4132UA have the same operating temperature range?
Both devices are typically specified for the industrial temperature range of –40°C to +85°C in the UA package variant. However, always verify the exact temperature grade and package-specific ratings from the official manufacturer datasheet, as different grades or packages may exist.