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Texas Instruments INA106KP
- Part No.:
- INA106KP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
INA106KP.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:123
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Product details
Overview
INA106KP from Texas Instruments is a monolithic precision gain = 10 differential amplifier with 86dB minimum CMRR, 0.025% maximum gain error, and 0.5MHz typical bandwidth. It integrates laser-trimmed metal-film resistors and a precision op amp for high-accuracy signal conditioning in battery test systems and industrial sensor interfaces.
For engineers reviewing the INA106KP datasheet, INA106KP pinout, INA106KP application, or INA106KP equivalent, this page delivers verified electrical specs, package mapping, functional pin roles, real-world use cases, and validated alternative options for precision analog signal acquisition circuits.
Technical Context
The INA106KP implements a fixed-gain difference amplifier topology using four on-chip laser-trimmed resistors (10kΩ/100kΩ pairs) matched for ratio accuracy and TCR tracking. Its internal architecture eliminates external resistor matching requirements while maintaining 86dB CMRR over temperature.
It operates from ±5V to ±18V dual supplies or 10V–36V single supply, with output referenced to the REF pin and input common-mode range of ±11V at ±15V supplies. The device features bipolar or CMOS process variants (CSO: SHE/RFB), each with distinct slew rate (2–20 V/µs) and short-circuit current (40–70 mA sourcing).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 10 V/V - eliminates external resistor network design and matching effort |
| CMRR | 86 dB min - enables accurate measurement of small differential signals in noisy industrial environments |
| Gain Error | ±0.025% max - ensures <±250 ppm absolute gain accuracy without calibration |
| Offset Voltage | 200 µV max RTI - supports sub-millivolt-level signal resolution in precision instrumentation |
| Bandwidth | 0.5 MHz typical - suitable for DC–500 kHz analog acquisition in battery formation and servo feedback |
| Supply Range | ±5V to ±18V dual or 10–36V single - compatible with standard industrial power rails |
| Operating Temp | –40°C to +85°C - qualified for embedded industrial and energy storage equipment |
Pinout & Package
INA106KP is housed in an 8-pin plastic DIP (PDIP) package measuring 9.81 mm × 9.43 mm, with through-hole mounting and industry-standard lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | 10kΩ internal resistor to op amp noninverting terminal; used with –IN for differential input |
| –IN (Pin 2) | Inverting input | 10kΩ internal resistor to op amp inverting terminal; forms matched pair with +IN |
| REF (Pin 1) | Reference input | 100kΩ internal resistor to noninverting terminal; sets output offset and enables level-shifting |
| SENSE (Pin 5) | Sense input | 100kΩ internal resistor to inverting terminal; used with REF for precise gain-setting and CMR optimization |
| OUT (Pin 6) | Amplified output | Low-impedance buffered output capable of ±12V swing into 10kΩ load |
| V+ (Pin 7) | Positive supply | Connects to highest potential rail; supports up to +18V in dual-supply operation |
| V– (Pin 4) | Negative supply | Connects to lowest potential rail; supports down to –18V in dual-supply operation |
| NC (Pin 8) | No connection | Internally unconnected; must be left floating or tied to ground per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | On-chip 10kΩ/100kΩ metal film resistors trimmed for <0.025% gain error and 2 ppm/°C TCR tracking |
| High CMRR stability | 86 dB minimum maintained across –40°C to +85°C due to matched resistor thermal coefficients |
| Low drift performance | 0.2 µV/°C typical offset drift and 4 ppm/°C typical gain drift enable stable long-term measurements |
| Wide supply flexibility | Operates from ±5V to ±18V dual or 10–36V single supply - simplifies integration into existing power domains |
| Input protection capability | Withstands ±25V input voltage (10V beyond either supply) when source current limited to 1 mA |
Applications
| Battery Cell Formation & Test Equipment | Sensor Tag & Data Logger |
|---|---|
Use Scenario: Precise voltage monitoring during charge/discharge cycling of Li-ion cells under high-current conditions. IC Role / Device Role / Timing Role: Differential amplifier capturing cell voltage with rejection of PCB trace noise and shared ground offsets. Use Value: 86dB CMRR and 200µV offset ensure <1mV measurement uncertainty across 0–4.2V cell range without recalibration. | Use Scenario: Low-power analog front-end for environmental sensors (temperature, pressure) transmitting data via LPWAN. IC Role / Device Role / Timing Role: Signal conditioner converting bridge or transducer outputs to ADC-input-compatible levels. Use Value: Fixed G=10 gain and 0.001% nonlinearity preserve microvolt-level sensor resolution in compact battery-powered nodes. |
| Servo Drive Position Feedback | Level Transmitter |
Use Scenario: Closed-loop position sensing using resolvers or analog encoders in industrial motion control systems. IC Role / Device Role / Timing Role: High-stability differential receiver isolating encoder sine/cosine signals from motor EMI. Use Value: 0.5MHz bandwidth supports >100kHz position update rates; low drift maintains accuracy over extended thermal cycles. | Use Scenario: Industrial tank level measurement using 4–20mA current loop transmitters with HART modulation. IC Role / Device Role / Timing Role: Precision current-to-voltage converter and signal conditioner for pressure/level sensor bridges. Use Value: Laser-trimmed resistors eliminate gain drift-induced zero-shift errors in continuous 24/7 operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA105KP | Gain = 1 (unity-gain difference amplifier); same PDIP-8 package and pinout | Used where signal isolation without amplification is required; lower bandwidth (0.2MHz) | Select when system requires differential subtraction only, not gain scaling |
| INA118P | Programmable gain (1–1000) via external resistor; higher CMRR (110dB), lower offset (50µV) | Supports multi-range instrumentation but requires external gain-setting resistor and layout care | Choose when variable gain or superior DC specs justify added BOM and layout complexity |
Compared with INA106KP, INA105KP provides identical form factor and interface but no gain, making it suitable for pure differential subtraction; INA118P offers programmable gain and better DC performance but demands careful external resistor selection and layout to achieve its rated CMRR.
Availability
INA106KP is available at Aetrix Electronics and suitable for battery formation systems, industrial sensor interfaces, servo drive feedback loops, and level transmitter designs requiring stable component supply across extended production lifecycles.
Supply support for INA106KP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain components.
The INA106 product line delivers monolithic, resistor-equipped differential amplifiers optimized for high-accuracy industrial measurement, eliminating discrete resistor matching while maintaining stability over temperature and time.
FAQ
What is the supply voltage range supported by the INA106KP?
The INA106KP operates from ±5V to ±18V dual supply or 10V to 36V single supply. At ±15V, it delivers full-specified performance including 0.5MHz bandwidth and 86dB CMRR. Derated operation is permitted outside these ranges, but parameters such as output swing and CMRR degrade progressively beyond ±18V or below ±5V. The INA106KP datasheet specifies absolute maximum ratings up to ±18V, and recommended operating conditions align with this range.
Does the INA106KP require external resistors to set gain?
No, the INA106KP does not require external resistors to set gain. It integrates four laser-trimmed on-chip metal-film resistors (two 10kΩ and two 100kΩ) configured for fixed gain = 10. This monolithic architecture eliminates external resistor matching, temperature drift mismatch, and PCB layout sensitivity - all critical for maintaining 86dB CMRR and 0.025% gain accuracy. The INA106KP achieves this functionality in a single 8-pin PDIP package without any external gain-setting components.
How is the reference pin (REF) used in the INA106KP?
The REF pin (Pin 1) of the INA106KP serves as the output reference node and enables output level shifting. When grounded, the output is centered at 0V relative to the supply rails. Applying a voltage to REF sums directly with the amplified differential signal at the output: VOUT = 10(V+IN − V−IN) + VREF. To preserve CMRR, the source impedance driving REF must remain below 10Ω. The INA106KP datasheet confirms this behavior and shows practical offset-trim implementations using REF with series compensation resistors.
What is the maximum input common-mode voltage for the INA106KP?
The INA106KP supports an input common-mode voltage range of ±11V when operated at ±15V supplies. This is specified in the Electrical Characteristics table under "VCM Operating common-mode input voltage." Absolute maximum input voltage is ±25V (10V beyond either supply rail), provided input current is limited to 1mA. Exceeding ±11V within the specified operating range may reduce CMRR and introduce nonlinearities, while exceeding ±25V risks permanent damage. These limits are confirmed across all chip site origins (CSO: SHE and CSO: RFB) in the INA106KP datasheet.
Is the INA106KP pin-compatible with other Texas Instruments differential amplifiers?
The INA106KP shares the same 8-pin PDIP footprint and pinout with the INA105KP (gain = 1), enabling direct substitution where unity-gain differential operation is acceptable. However, it is not pin-compatible with programmable-gain devices like the INA118P, which uses different internal routing and pin functions. The INA106KP datasheet explicitly lists Pin 8 as NC (no connection), while other family members may assign functionality there. Always verify pin function tables per device - the INA106KP's pin configuration is fixed and documented in Section 4 of its SBOS152C datasheet.
INA106KP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1 MHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
INA106KP FAQ
1.How can I place an order for INA106KP through Aetrix?
Please submit a Request for Quotation (RFQ) for INA106KP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA106KP reliable?
The price and inventory of INA106KP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA106KP is usually 5 days.
3.What payment methods are accepted for INA106KP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA106KP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA106KP?
INA106KP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA106KP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA106KP?
For technical support, including INA106KP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA106KP requirements.
6.How does Aetrix verify that INA106KP is sourced from the original manufacturer or authorized distributors?
All INA106KP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA106KP meets industry standards.
7.What is the process for return or replacement of INA106KP?
All INA106KP units undergo pre-shipment inspection (PSI). If there is an issue with INA106KP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA106KP part is unused and in its original packaging.
Return procedure for INA106KP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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