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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsINA159AIDGKR
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INA159AIDGKR - Texas Instruments

Manufacturer Part Number
INA159AIDGKR
Manufacturer
Texas Instruments
Allelco Part Number
32D-INA159AIDGKR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
22,251 pcs available, New & Original
Parts Description
IC OPAMP DIFF 1 CIRCUIT 8VSSOP
Package
8-VSSOP
Data sheet
-
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 22251
  • Unit Price: $1.953
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.953 $1.95
10+ $1.685 $16.85
30+ $1.527 $45.81
100+ $1.366 $136.60
500+ $1.292 $646.00
1000+ $1.258 $1,258.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

INA159AIDGKR Tech Specifications
Texas Instruments - INA159AIDGKR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - INA159AIDGKR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply Span (Min) 1.8 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 100 µV
Supplier Device Package 8-VSSOP
Slew Rate 15V/µs
Series -
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Package Tape & Reel (TR)
Product Attribute Attribute Value
Output Type -
Operating Temperature -40°C ~ 125°C
Number of Circuits 1
Mounting Type Surface Mount
Current - Supply 1.1mA
Current - Output / Channel 60 mA
Base Product Number INA159
Amplifier Type Differential
-3db Bandwidth 1.5 MHz

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

INA159AIDGKR Image
INA159AIDGKR (1)

Manufacturer Part Number

INA159AIDGKR

Manufacturer

Texas Instruments

Introduction

High-precision, low-power instrumentation amplifier with rail-to-rail input/output

Product Features and Performance

Precision instrumentation amplifier with rail-to-rail input and output

Low noise and drift

Low power consumption

Wide common-mode and differential input voltage range

High input impedance

High CMRR and PSRR

Low offset voltage and bias current

Stable performance over temperature

Product Advantages

Ideal for medical, industrial, and data acquisition applications

Suitable for battery-powered and portable devices

Provides high-precision signal conditioning

Excellent for amplifying small differential signals

Key Technical Parameters

Operating voltage: 1.8V to 5.5V

Supply current: 1.1mA

Slew rate: 15V/s

Input offset voltage: 100μV

Amplifier type: Differential

-3dB bandwidth: 1.5MHz

Output current: 60mA

Quality and Safety Features

RoHS3 compliant

8-VSSOP package

Compatibility

Surface mount package

Wide operating temperature range: -40°C to 125°C

Application Areas

Medical instrumentation

Industrial process control

Data acquisition systems

Battery-powered portable devices

Product Lifecycle

Current product with no plans for discontinuation

Replacements and upgrades available if needed

Key Reasons to Choose This Product

High precision and accuracy

Low power consumption

Wide operating voltage and temperature range

Excellent common-mode rejection and power supply rejection

Suitable for a variety of instrumentation and data acquisition applications

Stable and reliable performance

Frequently Asked Questions(FAQ)

What is the input offset voltage of the INA159AIDGKR, and how does this parameter affect precision in high-gain differential amplifier applications?
The INA159AIDGKR exhibits an input offset voltage of 100 µV, which represents the internal mismatch between its two input terminals. In high-gain configurations, even small offset voltages can be amplified significantly, potentially introducing measurement errors or DC output shifts. For example, in a gain-of-100 setup, this 100 µV offset translates to a 10 mV error at the output—comparable to typical sensor signal levels. This makes the device suitable for precision applications only when gain stages are carefully managed or calibration is applied.
How does the INA159AIDGKR compare to other differential amplifiers like the INA826 in terms of bandwidth and slew rate for dynamic signal conditioning?
While the INA159AIDGKR offers a 1.5 MHz bandwidth and 15 V/µs slew rate, the INA826 provides higher performance with up to 4 MHz bandwidth and 30 V/µs slew rate. The choice depends on application dynamics: the INA159AIDGKR is adequate for slowly varying signals such as thermocouple outputs or low-frequency strain gauges, whereas the INA826 suits faster transients like piezoelectric sensor readings. Trade-offs include power consumption—the INA159 draws 1.1 mA versus the INA826’s 2.5 mA—making the former preferable in low-power battery-operated systems.
Can the INA159AIDGKR operate reliably across industrial temperature ranges without external compensation?
Yes, the INA159AIDGKR is rated from -40°C to 125°C, covering most industrial environments. Its internal architecture includes temperature-stable trimming processes that maintain input offset voltage within specification over this range. No external thermal compensation is required under normal operating conditions, provided the PCB layout avoids localized heating near the IC and ensures adequate airflow or thermal vias where necessary.
What supply voltage range should be used when integrating the INA159AIDGKR into a single-supply system?
The INA159AIDGKR supports a supply span from 1.8 V to 5.5 V, enabling compatibility with modern low-voltage digital systems such as 3.3 V microcontrollers or 5 V industrial logic. When using a single supply, designers must ensure the input common-mode range includes ground (typically down to 100 mV above the negative rail) and the output swings close to both rails—within approximately 200 mV under load. This allows accurate amplification of unipolar signals like bridge sensor outputs without requiring dual supplies.
Is the INA159AIDGKR suitable for driving capacitive loads directly, or is series resistance recommended?
Direct drive of capacitive loads may lead to instability due to phase lag and potential oscillation, especially at gains above 5. To stabilize the loop, a small series resistor (e.g., 10 Ω–100 Ω) between the output and capacitor is typically added. This forms a damping network that reduces peaking and overshoot. For capacitive loads exceeding 1 nF, TI recommends verifying transient response through simulation or bench testing before finalizing the design.
How does the INA159AIDGKR handle input overvoltage conditions compared to standard op-amps?
Unlike many general-purpose op-amps, the INA159AIDGKR features robust input protection that allows common-mode voltages beyond the supply rails—up to ±25 V—without latch-up or damage. However, absolute maximum ratings still apply, and sustained exposure outside the 1.8 V to 5.5 V supply window should be avoided. This characteristic is particularly valuable in industrial settings where sensor wiring may induce transients or miswiring events.
What is the typical quiescent current draw of the INA159AIDGKR, and what impact does it have on power-sensitive designs?
The INA159AIDGKR consumes approximately 1.1 mA of quiescent current per channel. While not ultra-low-power like some CMOS-based amplifiers, this level remains acceptable for moderate-duty applications such as portable data loggers or battery-powered instrumentation. Over a year of continuous operation from a 200 mAh coin cell, this current would consume less than 2% of available charge—a reasonable trade-off for improved noise performance and stability over competing micropower alternatives.
Can the INA159AIDGKR replace discrete op-amp solutions in precision differential front-ends for medical sensors?
Yes, the INA159AIDGKR integrates matched input transistors and laser-trimmed resistors internally, reducing component count and improving CMRR (>90 dB typical). This integration enhances reliability and reduces layout sensitivity compared to discrete builds. Its low offset and stable gain make it viable for ECG or bioimpedance applications, though full compliance with IEC 60601 requires additional isolation, filtering, and redundancy beyond the amplifier alone.
What packaging options are available for the INA159AIDGKR, and how do they influence board-level design choices?
The INA159AIDGKR is offered in 8-VSSOP (MSOP) packages, ideal for space-constrained layouts. The small footprint enables high-density PCB assembly, but demands careful attention to trace routing to minimize parasitic capacitance and inductance. Thermal performance is modest; maximum junction-to-ambient thermal resistance is around 125°C/W, so long-term operation near 125°C ambient may require derating unless airflow or copper pours assist heat dissipation.
How does the output current capability of the INA159AIDGKR support real-world driving requirements?
With an output current rating of 60 mA per channel, the INA159AIDGKR can directly drive resistive loads such as shunt resistors (≤83 Ω at 5 V), relay coils, or LED arrays without buffering. This eliminates the need for external drivers in many cases, simplifying design and reducing bill of materials. However, inductive loads like solenoids require flyback diodes to prevent voltage spikes that could exceed supply limits or stress internal ESD structures.
What precautions should be taken during layout to preserve the CMRR performance of the INA159AIDGKR?
To maintain high common-mode rejection ratio, keep the positive and negative inputs closely matched in length, impedance, and routing. Avoid crossing power or ground traces beneath the amplifier package. Use a solid ground plane and separate analog/digital grounds at the point of entry to prevent digital switching noise coupling into the differential pair. Kelvin connections from source resistors should connect directly to the input pins to avoid introducing mismatch via bond wire resistances.
Does the INA159AIDGKR require external biasing when amplifying single-ended signals from grounded sources?
Yes, when amplifying a signal referenced to ground using a single supply (e.g., 3.3 V), the INA159AIDGKR’s inputs must remain within the common-mode input range, which extends from 100 mV below the negative supply to slightly above the positive supply. A bias network using two equal resistors from the supply midpoint to each input terminal ensures proper DC operation. For instance, a 10 kΩ resistor divider from 3.3 V to GND creates a 1.65 V virtual ground, allowing mid-supply biasing for unipolar sensor outputs.
What is the significance of the Moisture Sensitivity Level (MSL) rating for the INA159AIDGKR, and how does it affect handling in production?
The INA159AIDGKR has an MSL rating of 1, indicating unlimited storage life before use and no requirement for dry packing prior to reflow soldering. This simplifies inventory management and reduces costs associated with humidity-controlled storage. Manufacturers can safely expose the components to ambient air indefinitely without degradation, provided standard ESD precautions are observed during handling.
How does the base product number relationship help engineers select derivatives of the INA159 family?
The INA159AIDGKR shares the base product number INA159, indicating shared core architecture, pin compatibility, and similar electrical characteristics across variants. Engineers evaluating cost-performance trade-offs can confidently substitute one variant for another without redesigning the entire circuit interface, provided supply voltage, packaging, and temperature grade align. This consistency streamlines prototyping and accelerates time-to-market across multiple product lines.
What environmental certifications does the INA159AIDGKR carry, and what implications do they have for global compliance?
The INA159AIDGKR is RoHS3 compliant, meaning it meets current European Union restrictions on hazardous substances including lead, mercury, cadmium, and hexavalent chromium. It is also REACH unaffected and classified under ECCN EAR99, facilitating export worldwide without complex licensing. These attributes simplify regulatory submissions in consumer, medical, and industrial markets, reducing legal and logistical overhead for OEMs deploying the device internationally.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments INA159AIDGKR

Product Attribute INA159AIDGKTG4 INA157UA/2K5G4 INA157UA/2K5 INA157UAG4
Part Number INA159AIDGKTG4 INA157UA/2K5G4 INA157UA/2K5 INA157UAG4
Manufacturer Texas Instruments Luminary Micro / Texas Instruments Texas Instruments Luminary Micro / Texas Instruments
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply Span (Max) - - - -
-3db Bandwidth - - - -
Number of Circuits - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Slew Rate - - - -
Amplifier Type - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Input Offset - - - -
Current - Output / Channel - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Current - Supply - - - -
Voltage - Supply Span (Min) - - - -

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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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DHL & FedEx Shipment Charges Reference
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1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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INA159AIDGKR Image

INA159AIDGKR

Texas Instruments
32D-INA159AIDGKR

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

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