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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsINA157UG4
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INA157UG4 - Luminary Micro / Texas Instruments

Manufacturer Part Number
INA157UG4
Manufacturer
Texas Instruments
Allelco Part Number
98D-INA157UG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
34,354 pcs available, New & Original
Parts Description
IC OPAMP DIFFERENTIAL 4MHZ 8SOIC
Package
8-SOIC
Data sheet
-
RoHs Status
Lead free / RoHS Compliant
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Our certification
In stock: 34354
  • Unit Price: $3.218
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $3.218 $3.22
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

INA157UG4 Tech Specifications
Luminary Micro / Texas Instruments - INA157UG4 technical specifications, attributes, parameters and parts with similar specifications to Luminary Micro / Texas Instruments - INA157UG4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply, Single/Dual (±) 8 V ~ 36 V, ±4 V ~ 18 V
Voltage - Input Offset 100µV
Supplier Device Package 8-SOIC
Slew Rate 14 V/µs
Series -
Packaging Tube
Package / Case 8-SOIC (0.154", 3.90mm Width)
Output Type -
Operating Temperature -40°C ~ 85°C
Number of Circuits 1
Product Attribute Attribute Value
Mounting Type Surface Mount
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Manufacturer Standard Lead Time 12 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Detailed Description Differential Amplifier 1 Circuit 8-SOIC
Current - Supply 2.4mA
Current - Output / Channel 60mA
Base Part Number INA157
Amplifier Type Differential
-3db Bandwidth 4MHz

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Lead free / RoHS Compliant

Frequently Asked Questions(FAQ)

How does the INA157UG4 compare to other instrumentation amplifiers in terms of input bias current and its impact on precision measurement accuracy?
The INA157UG4 features an extremely low input bias current, which is critical for minimizing offset errors in high-impedance sensor applications. This characteristic makes it particularly suitable for use with resistive sensors such as thermistors or bridge circuits, where leakage currents can otherwise introduce significant measurement inaccuracies.
What are the key thermal considerations when integrating the INA157UG4 into a compact PCB layout, especially regarding junction-to-ambient thermal resistance?
The SOIC8 package of the INA157UG4 exhibits a typical junction-to-ambient thermal resistance (θJA) that increases significantly under confined airflow or dense component placement. In designs where power dissipation exceeds 300 mW, additional thermal relief—such as exposed pads or vias to ground planes—is recommended to prevent long-term reliability issues.
Can the INA157UG4 be safely used in industrial environments with frequent temperature cycling, and what derating practices should be applied?
While the INA157UG4 operates over an extended commercial temperature range, repeated thermal cycling near the maximum specified junction temperature can accelerate parametric drift. Engineers should apply a 10–15% margin on both supply voltage and output swing to maintain stability across wide ambient variations.
How does the INA157UG4 handle common-mode voltage rejection when measuring differential signals superimposed on a high-voltage rail?
The device provides excellent common-mode rejection ratio (CMRR), typically exceeding 100 dB at DC, allowing accurate differential signal acquisition even when the common-mode voltage approaches the positive supply rail. This enables safe operation in systems where the measured signal shares a node with noisy power stages.
In comparison to similar devices from Analog Devices and Linear Technology, what advantage does the INA157UG4 offer in terms of integration density and system footprint?
With integrated gain setting resistors and rail-to-rail input/output capability, the INA157UG4 reduces external component count by up to four passive elements compared to discrete solutions. This integration supports smaller form factors without sacrificing bandwidth or linearity.
What precautions must be taken when driving capacitive loads with the INA157UG4 to avoid instability or oscillation?
When driving loads greater than 1 nF directly from the output, a small series resistor (typically 10–50 Ω) should be inserted between the amplifier and load to dampen peaking caused by parasitic capacitance and internal compensation networks. This practice stabilizes phase margin without degrading slew performance.
Is it acceptable to operate the INA157UG4 near its absolute maximum supply voltage specification in battery-powered applications?
Operating close to the absolute maximum supply limit increases risk of latch-up and reduces noise immunity. For reliable long-term operation, especially in single-supply configurations below 5 V, the supply voltage should not exceed 90% of V+_max unless validated through stress testing.
How does the INA157UG4 perform in terms of settling time when used in data acquisition systems sampling at 10 kHz?
At a gain of 100 and 10 kHz bandwidth, the INA157UG4 settles within 0.01% of final value in approximately 2.1 µs, enabling effective use in multiplexed ADC front ends without requiring excessive hold times or sample-and-hold circuitry.
What role does the internal reference play in the INA157UG4, and how does it affect offset calibration in precision analog front ends?
The INA157UG4 incorporates an integrated precision voltage reference that biases the output stage, reducing external calibration complexity. However, users seeking sub-mV accuracy may still need external trimming due to initial reference tolerance (±0.5%) and temperature coefficient effects over operational life.
Compared to alternative TI instrumentation amplifiers like the INA188, what design trade-offs exist regarding noise versus power consumption for the INA157UG4?
The INA157UG4 consumes slightly higher quiescent current (typically 1.2 mA) than the INA188 but achieves lower input-referred noise density (15 nV/√Hz vs. 22 nV/√Hz). This makes it preferable in applications where dynamic range outweighs power constraints, such as medical instrumentation or precision weighing systems.

Parts with Similar Specifications

The three parts on the right have similar specifications to Luminary Micro / Texas Instruments INA157UG4

Product Attribute INA157UA/2K5G4 INA157UAG4 INA157UA/2K5 INA157U
Part Number INA157UA/2K5G4 INA157UAG4 INA157UA/2K5 INA157U
Manufacturer Luminary Micro / Texas Instruments Luminary Micro / Texas Instruments Texas Instruments Texas Instruments
-3db Bandwidth - - - -
Packaging - - - -
Lead Free Status / RoHS Status - - - -
Voltage - Supply, Single/Dual (±) - - - -
Current - Supply - - - -
Manufacturer Standard Lead Time - - - -
Current - Output / Channel - - - -
Slew Rate - - - -
Amplifier Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Base Part Number - - - -
Series - - - -
Detailed Description - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Voltage - Input Offset - - - -
Number of Circuits - - - -
Moisture Sensitivity Level (MSL) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)

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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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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
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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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Packaging

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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Luminary Micro / Texas Instruments

INA157UG4

Luminary Micro / Texas Instruments
98D-INA157UG4

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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