OPA2137UAG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The OPA2137UAG4 is a Texas Instruments dual-channel general-purpose JFET-input operational amplifier with 1 MHz gain-bandwidth product housed in an 8-pin SOIC package. It features low input bias current and rail-to-rail output swing suitable for precision signal conditioning and audio applications. Available from authorized distributors worldwide with in-stock inventory and global shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- OPA2137UAG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of OPA2137UAG4?
- Dual-channel JFET-input op-amp with 1 MHz gain-bandwidth product for precision general-purpose analog signal processing
- Low input bias current JFET architecture reduces offset errors in high-impedance sensor and audio circuit designs
- 8-pin SOIC package integrates 2 op-amp channels in a 4.9 x 3.9 mm footprint enabling compact dual-channel PCB layouts
What is OPA2137UAG4 used for?
The OPA2137UAG4 is used in audio preamplifiers, active filter networks, and sensor signal conditioning circuits where dual-channel JFET-input performance at 1 MHz bandwidth is needed with minimal external components. Its low input bias current makes it effective in sample-and-hold circuits, integrators, and logarithmic amplifiers operating from ±5 V to ±15 V dual supplies. It is also deployed in portable instrumentation, data acquisition front ends, and educational lab equipment requiring a reliable, general-purpose dual op-amp in the standard SOIC-8 form factor.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the OPA2137UAG4 datasheet?
OPA2137UAG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for OPA2137UAG4?
Compatible alternatives and drop-in replacements for OPA2137UAG4:
Frequently Asked Questions
What gain-bandwidth product does the OPA2137UAG4 provide and how does it limit closed-loop bandwidth at typical gains?
The OPA2137UAG4 has a gain-bandwidth product of 1 MHz. At a closed-loop gain of 10 V/V, the usable signal bandwidth is limited to approximately 100 kHz, and at a gain of 100 V/V it drops to around 10 kHz. This makes the OPA2137UAG4 suitable for audio-band and low-frequency sensor conditioning applications operating below 100 kHz.
How does the JFET input stage of OPA2137UAG4 benefit high-impedance sensor interface circuits?
The JFET-input architecture of the OPA2137UAG4 provides input bias currents typically in the picoampere range, far lower than bipolar-input op-amps. This minimizes current-induced voltage errors when used with feedback resistors above 1 MΩ, making it well-suited for pH electrodes, piezoelectric sensors, and electret microphone preamplifiers where source impedances can reach 10 MΩ or more.
What supply voltage range does OPA2137UAG4 support and which power rail configurations does it accept?
The OPA2137UAG4 operates on dual supply voltages from ±2.5 V to ±18 V, or equivalent single supplies from 5 V to 36 V. This wide range supports use in both low-power portable designs at ±5 V and traditional precision instrumentation circuits at ±15 V, without requiring dedicated LDO regulators for each supply configuration.
When is OPA2137UAG4 a cost-effective alternative to the OPA2134 for audio applications?
The OPA2137UAG4 shares the same dual JFET-input SOIC-8 pinout as the OPA2134 but offers lower acquisition cost when ultra-low distortion performance below -120 dB THD is not required. For audio buffer stages, headphone amplifiers, or active crossover filters operating below 20 kHz where THD below -90 dB is acceptable, the OPA2137UAG4 provides equivalent channel count and package compatibility at reduced BOM cost.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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