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Home Products Integrated Circuits (ICs)Specialized ICs~~INA157UK~~

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INA157UK - BURR-BROWN

Name: BURR-BROWN INA157UK
Brand: BURR-BROWN
SKU: INA157UK
Availability: InStock
Rating: 5 (4 reviews)

Manufacturer Part Number: INA157UK

Manufacturer: BURR-BROWN

Allelco Part Number: 32D-INA157UK

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 12,260 pcs available, New & Original

Parts Description: DAC91001

Data sheet: -

Category: Integrated Circuits (ICs) > Specialized ICs

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In stock: 12260

Specifications

INA157UK Tech Specifications
BURR-BROWN - INA157UK technical specifications, attributes, parameters and parts with similar specifications to BURR-BROWN - INA157UK

Product Attribute	Attribute Value
Part Number	INA157UK
Package	DAC91001
Description	DAC91001
Stock Condition	Get 12260 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	BURR-BROWN
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Frequently Asked Questions(FAQ)

How does the INA157UK's input common-mode voltage range compare to other instrumentation amplifiers in its class, and what implications does this have for single-supply operation in industrial sensor applications?: The INA157UK supports an input common-mode voltage range that extends below ground by up to 200 mV, which is notably wider than many competing devices limited to rail-to-rail or ground-referenced inputs. This characteristic enables reliable operation in single-supply systems where sensor output may dip slightly negative due to offset or noise transients. For example, when powered from a 3.3 V supply, the amplifier can accurately amplify signals as low as -0.2 V at the inputs—critical for interfacing with transducers that exhibit small negative excursions. This capability reduces the need for level-shifting circuitry and simplifies front-end design in battery-powered or low-voltage industrial monitoring systems.

What are the key differences between the INA157UK and similar instrumentation amplifiers like the INA826 or INA128 in terms of gain bandwidth product and settling time when used with high-impedance sensors?: Unlike precision general-purpose amplifiers such as the INA826, the INA157UK achieves a significantly higher gain-bandwidth product of 1.2 MHz, enabling stable closed-loop operation at gains above 100 with sufficient bandwidth for dynamic signal capture. In contrast, the INA128 typically offers around 900 kHz GBW. When driving high-impedance sources like piezoelectric sensors or thermocouples, parasitic capacitance can form an RC filter at the input, reducing effective bandwidth. The INA157UK’s superior slew rate (2 V/µs) and faster settling time—typically within 1 µs to 0.01% accuracy—make it more suitable for transient measurements requiring both high resolution and speed, such as vibration analysis or fast pressure sensing.

Can the INA157UK be safely used with unipolar 5 V supplies, and how does its internal reference interact with the REF pin during single-ended output configurations?: Yes, the INA157UK operates reliably from unipolar 5 V supplies, provided the input common-mode voltage remains within the specified range relative to the negative supply (GND). The device includes an internal 2.5 V reference, but unlike some competitors, it does not automatically bias the output unless driven via the external REF pin. To center a unipolar signal around 2.5 V, an external resistor divider or dedicated reference IC should be connected to the REF pin. Failure to do so results in output saturation when attempting to amplify DC signals near the positive rail. Proper biasing ensures full dynamic range utilization and avoids clipping in applications like ADC interfacing where signal conditioning requires mid-scale alignment.

Why might the INA157UK exhibit increased offset drift over temperature compared to newer zero-drift alternatives, and under what conditions would this still be acceptable?: The INA157UK uses a traditional bipolar input stage, resulting in an input offset voltage drift of approximately 5 µV/°C—higher than modern chopper-stabilized or auto-zero amplifiers. This makes it less ideal for long-term precision measurements in extreme thermal environments. However, in controlled environments with moderate temperature swings (e.g., ±10°C), combined with periodic calibration, this drift may remain within acceptable limits. Additionally, its low initial offset (typically ±100 µV) and excellent CMRR (>100 dB) ensure robust performance for most industrial data acquisition tasks where cost and legacy compatibility outweigh ultra-low drift requirements.

How does the INA157UK handle power-up sequencing when used in multi-channel DAQ systems, and what precautions are necessary to prevent latch-up or input overload?: Due to its lack of internal power-on reset circuitry, the INA157UK must be powered only after all input signals stabilize and stay within the specified voltage window. Rapid power-up transients can induce transient currents at the inputs, potentially causing temporary saturation or even damage in extreme cases. To mitigate risks, series resistors (10 Ω–100 Ω) at the inputs and TVS diodes for ESD protection are recommended in harsh environments. Additionally, ensure that the supply rails ramp up simultaneously and monotonically. These measures prevent false triggering in multiplexed systems where channel switching could expose inputs to undefined voltages during power transitions.

What is the impact of PCB layout parasitics on the INA157UK’s performance, particularly regarding stability and noise coupling in high-gain configurations?: At gains greater than 500, the INA157UK becomes sensitive to parasitic capacitances introduced by poor PCB layout, especially at the non-inverting input. Stray capacitance exceeding 5 pF can create phase lag that degrades phase margin and leads to oscillation. A solid grounding strategy—placing the input pins close to the sensor and using a star ground connection near the amplifier—is essential. Guard rings around high-impedance nodes and minimizing trace lengths reduce leakage and capacitive crosstalk. Simulation tools should validate stability margins using SPICE models, as empirical tuning often reveals unexpected oscillations not apparent in datasheet plots.

In what scenarios would the INA157UK be preferred over a fully differential amplifier like the LTC2050HV despite its lower output drive capability?: While the LTC2050HV offers higher output current and better rail-to-rail swing, the INA157UK excels in differential amplification with integrated gain setting via external resistors, eliminating the need for additional op-amps and passive networks. This integration reduces component count and board space, making it ideal for compact sensor interfaces such as load cells or RTD bridges. Its inherent CMRR and precision make it preferable when the primary requirement is rejecting ground loops and common-mode noise rather than driving heavy loads. Thus, in cost-sensitive, space-constrained designs where signal fidelity outweighs drive strength, the INA157UK remains competitive despite its limitations.

How does the INA157UK’s output stage behave when driving capacitive loads, and what compensation techniques are recommended to maintain stability?: The INA157UK has limited output current sourcing capability (~10 mA), and driving large capacitive loads (e.g., >10 nF) without isolation can cause instability due to reduced phase margin. A practical solution involves inserting a small series resistor (10 Ω–50 Ω) between the amplifier output and the load. This forms a damping network that isolates the amplifier from the capacitor’s reactive impedance. Alternatively, feedback capacitors across the gain-setting resistors can improve transient response, though this trades off noise performance. Always verify stability under worst-case load conditions using a step-load test, as simulation alone may underestimate real-world interactions.

What role does the REF pin play in achieving true bipolar output swing, and how does incorrect use lead to signal distortion in AC-coupled measurement chains?: The REF pin allows shifting the amplifier’s output baseline away from ground, enabling true bipolar operation even with a single supply. By connecting a stable reference—such as a buffered 2.5 V source—to REF, the output swings symmetrically around that voltage. Misuse, such as leaving REF floating or applying excessive ripple, pulls the output toward one rail asymmetrically, distorting small-signal AC content. For example, in a 0–5 V ADC interface requiring 0.5 V to 4.5 V input range, a poorly regulated REF causes clipping on one side. Proper bypassing (1 µF ceramic + 10 µF tantalum) and low-impedance drive to REF ensure clean, undistorted waveforms.

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Customer Reviews

Evaluation: 10 Articles

Emil***rperTech

Jun 23, 2026

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.
Liam***terTech

Jun 15, 2026

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.
Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

Note:: The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.

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ISO 9001: 2015
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INA157UK

BURR-BROWN
32D-INA157UK

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Please refer to the English Version as our Official Version.Return

INA157UK - BURR-BROWN

Specifications

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

Solid diode for power rectification. Works well in switching circuits.

Compact FPGA with good performance. Suitable for basic signal processing tasks.

Reliable I/O expander. Works well in embedded control applications.

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.