POPA2156ID Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
POPA2156ID is a Texas Instruments ultra-low noise, precision operational amplifier with 3 nV/√Hz voltage noise and 25 MHz gain-bandwidth product. It features rail-to-rail input and output with 200 µV maximum offset voltage. Available in SOIC-8 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- POPA2156ID Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of POPA2156ID?
- Ultra-low 3 nV/√Hz voltage noise density for high-fidelity signal amplification in precision measurement systems
- 25 MHz gain-bandwidth product enabling wideband signal processing in audio and instrumentation applications
- Rail-to-rail input and output swing maximizes dynamic range on low-voltage 3.3 V or 5 V supply rails
- 200 µV maximum input offset voltage delivers precision DC accuracy in sensor amplification and data acquisition front-ends
What is POPA2156ID used for?
POPA2156ID is used in precision instrumentation amplifiers, low-noise signal conditioning chains, and photodiode transimpedance amplifiers where minimal added noise is critical for measurement accuracy. Its 25 MHz bandwidth and rail-to-rail output make it suitable for active filters, audio preamplifiers, and ADC driver circuits in medical, test-and-measurement, and industrial sensing equipment. The 200 µV offset specification also makes it appropriate for bridge sensor amplification and precision voltage reference buffering applications.
What are the specifications of POPA2156ID?
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the POPA2156ID datasheet?
POPA2156ID Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for POPA2156ID?
Compatible alternatives and drop-in replacements for POPA2156ID:
Frequently Asked Questions
How does POPA2156ID's 3 nV/√Hz noise density compare to general-purpose op-amps in a low-noise sensor amplifier design?
POPA2156ID's 3 nV/√Hz voltage noise is 5 to 10 times lower than typical general-purpose op-amps at 10 nV/√Hz to 30 nV/√Hz, enabling significantly better signal-to-noise ratio in precision sensor amplifier circuits measuring small signals from strain gauges, thermocouples, and photodiodes.
What gain-bandwidth product does POPA2156ID provide, and at what closed-loop gain does it remain usable for audio signal processing?
POPA2156ID has a 25 MHz gain-bandwidth product, so at a closed-loop gain of 10 V/V, it maintains a usable bandwidth of 2.5 MHz. This is more than sufficient for 20 kHz audio signal processing and extends to baseband video and instrumentation filtering applications requiring gains up to 100 V/V at 250 kHz.
How does the rail-to-rail input and output of POPA2156ID benefit single 3.3 V supply designs?
Rail-to-rail input allows POPA2156ID to process signals within 100 mV of both supply rails, while rail-to-rail output swings within 50 mV of the rails, providing nearly the full 3.3 V dynamic range on a single supply. This maximizes ADC input utilization and reduces the need for mid-rail biasing resistors.
Is POPA2156ID suitable as a transimpedance amplifier for photodiode applications requiring low noise and wide bandwidth?
Yes, POPA2156ID's 3 nV/√Hz input voltage noise and 25 MHz gain-bandwidth product make it well-suited for photodiode transimpedance amplifier designs. At a transimpedance gain of 1 MΩ, the bandwidth is approximately 25 Hz, while a 10 kΩ feedback resistor yields a 2.5 MHz bandwidth for high-speed optical sensing.
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Why Buy from FindMyChip
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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