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Texas Instruments INA117KU/2K5G4
- Part No.:
- INA117KU/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA117KU/2K5G4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,900
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Product details
Overview
INA117KU/2K5G4 from Texas Instruments is a precision unity-gain difference amplifier optimized for high common-mode voltage measurement in industrial power systems. It delivers ±200V common-mode input range (VS = ±15V), 0.05% maximum gain error, 0.001% nonlinearity, 70dB minimum CMRR, and operates across –40°C to +85°C - enabling accurate differential sensing in servo drives and semiconductor test equipment.
For engineers reviewing the INA117KU/2K5G4 datasheet, INA117KU/2K5G4 pinout, INA117KU/2K5G4 application, or INA117KU/2K5G4 equivalent, key selection criteria include its ±500V protected inputs, SOIC-8 package compatibility, 200kHz (CSO:SHE) or 500kHz (CSO:TID) bandwidth, and reference-pin configurable transfer function (VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB).
Technical Context
The INA117KU/2K5G4 integrates a precision op amp with a laser-trimmed thin-film resistor network to achieve high common-mode rejection without galvanic isolation. Its input stage supports ±500V transient protection on both common-mode and differential inputs, and its reference pins (REFA, REFB) enable programmable output offset via external voltage sources.
Bandwidth and slew rate depend on chip site origin (CSO): CSO:SHE yields 200kHz –3dB bandwidth and 1.7–2.6V/µs slew rate, while CSO:TID delivers 500kHz bandwidth and up to 5V/µs slew rate. Gain nonlinearity remains ≤0.001% of FSR across both CSOs, and CMRR exceeds 70dB DC to 1kHz under full ±200V common-mode conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Common-mode input range | ±200V at ±15V supply - enables direct sensing across high-voltage bus rails without isolation. |
| Gain error | ±0.05% max - ensures <500ppm absolute accuracy in current-sense and voltage-monitoring applications. |
| Nonlinearity | 0.001% max - preserves fidelity in precision ATE and ultrasound signal chains where harmonic distortion must be minimized. |
| CMRR | 70dB min (DC–1kHz) - rejects noise from switching power supplies and motor drives in multi-axis servo systems. |
| Bandwidth (–3dB) | 200kHz (CSO:SHE) or 500kHz (CSO:TID) - supports fast transient capture in semiconductor test and real-time current monitoring. |
| Input protection | ±500V common-mode & differential - eliminates need for external TVS clamps in rugged industrial environments. |
| Supply range | ±5V to ±18V dual or 10–36V single - accommodates legacy ±15V rails and modern wide-input industrial supplies. |
Pinout & Package
The INA117KU/2K5G4 is housed in an SOIC-8 (D) package measuring 3.91mm × 4.9mm, rated for –40°C to +85°C operation and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REFB) | Reference B input | Accepts external voltage to shift output baseline; used with REFA to configure VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB. |
| 2 (–IN) | Inverting input | Differential input node; matched impedance to +IN ensures high CMRR when source impedances are balanced. |
| 3 (+IN) | Non-inverting input | Differential input node; laser-trimmed resistor network maintains ratio match with –IN for stable gain accuracy. |
| 4 (V–) | Negative power supply | Connects to system ground or negative rail; supports single-supply (10–36V) or dual-supply (±5V to ±18V) operation. |
| 5 (REFA) | Reference A input | Second reference terminal enabling bidirectional output offset control; critical for battery cell monitoring and level-shifting. |
| 6 (Output) | Amplifier output | Low-impedance (0.01Ω) buffered output capable of driving 20mA loads; stable with up to 10nF capacitive load (CSO:TID). |
| 7 (V+) | Positive power supply | Primary supply connection; quiescent current is 0.8–1.5mA depending on CSO, minimizing thermal drift in dense layouts. |
| 8 (NC) | No internal connection | Unbonded die pad; may be grounded for EMI reduction but has no electrical function in the INA117KU/2K5G4. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | Enables 0.05% gain error and 70dB+ CMRR without external trimming - reduces calibration overhead in production test systems. |
| ±500V input protection | Eliminates need for discrete overvoltage clamping components in motor drive current-sense circuits and HV power supply monitors. |
| Reference-pin programmability | Allows dynamic output offset adjustment (e.g., for battery cell voltage stacking) without redesigning feedback networks. |
| CSO-optimized performance | Two qualified fabrication flows (SHE/TID) provide trade-off options: SHE prioritizes low noise (25µVPP), TID maximizes bandwidth (500kHz). |
| Wide supply flexibility | Operates from ±5V to ±18V dual or 10–36V single supply - simplifies integration into mixed-rail industrial controllers and ATE platforms. |
Applications
| Motor Drive Current Sensing | Semiconductor Test Equipment |
|---|---|
|
Use Scenario: Measuring phase current in three-phase servo inverters with ±200V bus-to-ground common-mode voltage. IC Role / Device Role / Timing Role: High-CMRR difference amplifier converting shunt voltage to ground-referenced signal for ADC sampling. Use Value: Replaces isolated amplifiers, eliminating isolated power supplies and reducing board area by >30% while maintaining 0.001% linearity. |
Use Scenario: Precision voltage differential measurement during wafer-level parametric testing of power MOSFETs. IC Role / Device Role / Timing Role: Front-end signal conditioner rejecting noise from high-speed switching loads and fixture cabling. Use Value: Delivers 70dB CMRR at 1kHz to resolve sub-mV device thresholds amid 100V+ common-mode transients. |
| Ultrasound Transducer Bias Monitoring | Battery Management System Cell Voltage |
|
Use Scenario: Monitoring bias voltage stability across piezoelectric transducer arrays operating at ±150V common-mode. IC Role / Device Role / Timing Role: High-voltage differential monitor feeding analog front-end of ultrasound beamformer ASIC. Use Value: ±500V input protection prevents latch-up during probe insertion transients; 200kHz bandwidth captures fast bias excursions. |
Use Scenario: Stacked lithium-ion cell voltage measurement in 16-cell BMS, where each cell floats at increasing common-mode potential. IC Role / Device Role / Timing Role: Differential sensor isolating individual cell voltage from string common-mode voltage up to ±200V. Use Value: Reference pins (REFA/REFB) enable programmable output offset to map 0–4.2V cell range to 0–5V ADC input without level-shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high common-mode voltage difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA149IPW | Higher CMRR (100dB typ), lower input bias current (10pA), but narrower ±12V common-mode range and no reference-pin programmability. | Better for ultra-low-current leakage measurements; unsuitable for >±12V CMV applications like motor drives. | Select INA149IPW only when CMV < ±12V and sub-pA input bias is required - not a drop-in replacement for INA117KU/2K5G4. |
| AMC1301DWVR | Galvanically isolated delta-sigma modulator (±1kV reinforced isolation), 7.5MHz bandwidth, but requires external digital filter and isolated power. | Required where safety certification (IEC 61800-5-1) mandates isolation; adds complexity vs. INA117KU/2K5G4's direct analog output. | Choose AMC1301DWVR only when regulatory isolation is mandatory; otherwise INA117KU/2K5G4 offers simpler, lower-cost, higher-accuracy analog solution. |
Compared with INA149IPW and AMC1301DWVR, the INA117KU/2K5G4 uniquely balances ±200V common-mode capability, reference-pin configurability, and analog output simplicity - making it optimal for cost-sensitive, non-isolated industrial measurement where precision and ruggedness are primary.
Availability
INA117KU/2K5G4 is available at Aetrix Electronics and suitable for motor drive current sensing, semiconductor ATE, ultrasound scanner bias monitoring, and battery management system cell voltage measurement requiring stable component supply and long-term industrial lifecycle support.
Supply support for INA117KU/2K5G4 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 solutions.
The INA117 product line was designed specifically for high common-mode voltage differential measurement in industrial automation and test equipment - delivering isolation-grade performance without optical or magnetic barriers.
FAQ
What is the maximum common-mode voltage the INA117KU/2K5G4 can handle continuously?
The INA117KU/2K5G4 supports continuous common-mode input voltages up to ±200V when operated with ±15V supplies. This rating is specified under Recommended Operating Conditions and verified across the full –40°C to +85°C temperature range. Momentary overloads up to ±500V are tolerated on both common-mode and differential inputs due to integrated protection circuitry, but sustained operation beyond ±200V violates absolute maximum ratings and risks permanent damage to the INA117KU/2K5G4.
Does the INA117KU/2K5G4 require external trimming for gain accuracy?
No, the INA117KU/2K5G4 does not require external trimming to achieve its specified ±0.05% maximum gain error. Its precision is enabled by a monolithic design featuring a laser-trimmed thin-film resistor network integrated directly with the op amp die. This factory-trimmed architecture ensures guaranteed gain accuracy across temperature and supply variations without user calibration - a key advantage of the INA117KU/2K5G4 over discrete difference amplifier implementations.
How does the reference pin configuration affect the transfer function of the INA117KU/2K5G4?
The INA117KU/2K5G4 transfer function is VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB. When both REFA and REFB are tied to 0V, the device operates as a standard unity-gain difference amplifier. Applying voltages to these pins introduces programmable output offset: for example, setting REFA = 0.1V and REFB = 0V shifts output by +2V, enabling flexible level-shifting in battery stack monitoring. This behavior is intrinsic to the INA117KU/2K5G4's internal resistor topology and is fully characterized in the datasheet.
Can the INA117KU/2K5G4 operate from a single supply?
Yes, the INA117KU/2K5G4 supports single-supply operation from 10V to 36V, as confirmed in Section 5.3 Recommended Operating Conditions. In this mode, V– is connected to ground, and the input common-mode range extends from –10V to (V+) – 5V. Output swing remains rail-to-rail within load limits (e.g., 13.5V typical with ±6.75mA load at V+ = 15V). Designers must ensure input signals remain within the validated common-mode window to maintain specified CMRR and linearity - a requirement explicitly defined for the INA117KU/2K5G4 in its electrical characteristics table.
What is the significance of Chip Site Origin (CSO) for the INA117KU/2K5G4?
Chip Site Origin (CSO) identifies the fabrication flow used for the INA117KU/2K5G4 die: CSO:SHE and CSO:TID represent two qualified manufacturing processes with distinct performance profiles. CSO:SHE provides lower noise (25µVPP) and tighter offset voltage (120µV typ), while CSO:TID delivers higher bandwidth (500kHz) and slew rate (up to 5V/µs). The INA117KU/2K5G4 orderable part number does not specify CSO, so designs must be robust across both variants - a requirement explicitly stated in the datasheet's specification notes and validated in all published test data for the INA117KU/2K5G4.
INA117KU/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.6V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 200 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 600 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 20 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
INA117KU/2K5G4 FAQ
1.How can I place an order for INA117KU/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA117KU/2K5G4 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 INA117KU/2K5G4 reliable?
The price and inventory of INA117KU/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA117KU/2K5G4 is usually 5 days.
3.What payment methods are accepted for INA117KU/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA117KU/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA117KU/2K5G4?
INA117KU/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA117KU/2K5G4 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 INA117KU/2K5G4?
For technical support, including INA117KU/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA117KU/2K5G4 requirements.
6.How does Aetrix verify that INA117KU/2K5G4 is sourced from the original manufacturer or authorized distributors?
All INA117KU/2K5G4 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 INA117KU/2K5G4 meets industry standards.
7.What is the process for return or replacement of INA117KU/2K5G4?
All INA117KU/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with INA117KU/2K5G4, 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 INA117KU/2K5G4 part is unused and in its original packaging.
Return procedure for INA117KU/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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