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Texas Instruments INA117PG4
- Part No.:
- INA117PG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
INA117PG4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,857
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Product details
Overview
INA117PG4 from Texas Instruments is a precision unity-gain high common-mode voltage difference amplifier designed for accurate differential voltage measurement in harsh industrial environments. It supports ±200V common-mode input range (at ±15V supply), offers 0.05% max gain error, 0.001% max nonlinearity, and 70dB min CMRR. It is used in semiconductor ATE systems to isolate and condition high-voltage sensor signals without galvanic isolation.
For engineers reviewing the INA117PG4 datasheet, INA117PG4 pinout, INA117PG4 application, or INA117PG4 equivalent, key selection criteria include its ±500V protected inputs, 200kHz/500kHz bandwidth (CSO-dependent), SO-8 or PDIP-8 package compatibility, and suitability for current sensing, servo drive monitoring, and ultrasound front-end signal conditioning.
Technical Context
The INA117PG4 integrates a precision op amp with a laser-trimmed thin-film resistor network to achieve high common-mode rejection and low gain error. Its transfer function is VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB, enabling flexible reference-level shifting and offset control in high-voltage measurement paths.
Input protection circuitry withstands ±500V common-mode and differential transients, while internal resistor matching ensures stable CMRR across temperature (70–100 dB). Bandwidth varies by chip site origin: 200kHz (CSO: SHE) or 500kHz (CSO: TID), with slew rate up to 5 V/µs and settling time of 10 µs to 0.01%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Common-mode input range | ±200V at ±15V supply - enables direct measurement of high-side shunt voltages in motor drives or power supplies. |
| Gain error (max) | ±0.05% - ensures <500 ppm absolute accuracy in unity-gain configurations for precision current sensing. |
| Nonlinearity (max) | 0.001% of FSR - maintains fidelity in wide-dynamic-range applications like ultrasound beamforming. |
| CMRR (min) | 70 dB DC - rejects >90% of common-mode interference in noisy industrial machine tool environments. |
| Bandwidth (–3 dB) | 200 kHz (CSO: SHE) or 500 kHz (CSO: TID) - supports fast transient capture in semiconductor test equipment. |
| Input protection | ±500V common-mode & differential - eliminates need for external TVS/clamping in ATE fixture interfaces. |
| Quiescent current | 0.8–2 mA - enables low-power operation in multi-channel monitoring systems without thermal derating. |
Pinout & Package
The INA117PG4 is supplied in an 8-pin plastic DIP (PDIP) package measuring 6.35 mm × 9.81 mm, with through-hole mounting and industry-standard pin spacing. Pin 8 is NC (no internal connection) and may be grounded or left floating per layout requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REFB) | Reference B input | Provides negative reference offset term (–19×VREFB) in extended transfer function; connects to system ground or bias network. |
| 2 (–IN) | Inverting input | Accepts high-common-mode negative-side signal; requires low source impedance (<75 Ω) to preserve CMRR. |
| 3 (+IN) | Non-inverting input | Accepts high-common-mode positive-side signal; matched impedance with Pin 2 critical for CMR performance. |
| 4 (V–) | Negative power supply | Supports dual-supply operation down to –18 V; must be decoupled locally to suppress supply noise coupling. |
| 5 (REFA) | Reference A input | Provides positive reference offset term (+20×VREFA); enables level-shifting output above or below supply rails. |
| 6 (Output) | Differential output | Delivers rail-to-rail capable output (±13.7 V typical at ±15 V supply); drives 10 kΩ loads with <0.01 Ω output impedance. |
| 7 (V+) | Positive power supply | Supports dual-supply up to +18 V or single-supply up to +36 V; requires local 0.1 µF ceramic decoupling. |
| 8 (NC) | No internal connection | Unused terminal; may be grounded for EMI reduction or left unconnected per PCB layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed resistor network | Enables 70–100 dB CMRR without external trimming; maintains ratio match over temperature and life. |
| ±500V input protection | Eliminates need for discrete clamping diodes or isolated power supplies in ATE and servo drive feedback loops. |
| Extended transfer function | VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB allows precise common-mode voltage boosting or offset nulling. |
| Low 1/f noise corner (~100 Hz) | Enables effective low-pass filtering (e.g., 1 kHz cutoff) to reduce integrated noise by >15× without sacrificing signal bandwidth. |
| Stable with capacitive loads up to 10 nF | Permits direct connection to long cables or ADC input filters without phase-margin degradation or oscillation risk. |
Applications
| Semiconductor ATE Test Channel | Multi-Axis Servo Drive Current Monitoring |
|---|---|
Use Scenario: Measuring millivolt-level voltage drops across high-side shunt resistors in automated test equipment under ±200V common-mode bias. IC Role / Device Role / Timing Role: High-CMRR difference amplifier providing isolated, low-error analog front-end signal conditioning before digitization. Use Value: Replaces costly isolation amplifiers while maintaining 0.05% gain accuracy and ±500V transient survivability in production test fixtures. |
Use Scenario: Real-time monitoring of phase currents in industrial servo drives operating at bus voltages up to 400 VDC. IC Role / Device Role / Timing Role: Unity-gain differential amplifier capturing bidirectional motor current with sub-µs settling for closed-loop torque control. Use Value: Enables accurate current feedback without optocoupler-based isolation, reducing BOM cost and improving bandwidth vs. isolated solutions. |
| Ultrasound Beamformer Front-End | Industrial Machine Tool Voltage Monitoring |
Use Scenario: Conditioning echo return signals from piezoelectric transducers in portable ultrasound scanners with high-voltage pulsers. IC Role / Device Role / Timing Role: Low-noise, high-linearity difference amplifier rejecting pulser-induced common-mode artifacts during receive window. Use Value: Delivers 0.001% nonlinearity and 200 kHz bandwidth to preserve image resolution and dynamic range in real-time beamforming. |
Use Scenario: Monitoring DC link voltage imbalance across capacitor banks in CNC machine spindle inverters. IC Role / Device Role / Timing Role: Precision differential monitor detecting <10 mV drift between parallel 400 VDC rails under EMI-heavy factory conditions. Use Value: Provides 70 dB CMRR and ±200 V input range to detect early-stage capacitor degradation without adding isolation barriers. |
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 |
|---|---|---|---|
| INA149IP | Higher CMRR (100 dB typ), lower input bias current (10 pA), but narrower bandwidth (120 kHz) and no REFA/REFB pins. | Better for ultra-low-drift DC measurements; unsuitable for AC-coupled or reference-shifted topologies requiring INA117PG4's extended transfer function. | Select INA149IP when absolute DC accuracy dominates over bandwidth and flexibility; retain INA117PG4 for programmable offset or high-speed transient capture. |
| AMC1301DWVR | Reinforced galvanic isolation (7000 VPK), 200 kHz bandwidth, but requires isolated power and has higher quiescent current (7 mA). | Required where safety certification mandates isolation; not drop-in due to different supply architecture and lack of reference pin functionality. | Choose AMC1301DWVR only when regulatory compliance (IEC 61800-5-1) mandates reinforced isolation; INA117PG4 remains optimal for cost-sensitive, non-isolated industrial monitoring. |
Compared with INA149IP and AMC1301DWVR, the INA117PG4 uniquely balances ±500V protection, reference-flexible transfer function, and 500 kHz bandwidth-making it the only option supporting both high-speed transient capture and programmable common-mode offset in non-isolated high-voltage measurement systems.
Availability
INA117PG4 is available at Aetrix Electronics and suitable for semiconductor ATE test channels, multi-axis servo drive current monitoring, and ultrasound scanner front-ends requiring stable component supply across extended product lifecycles.
Supply support for INA117PG4 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 amplifiers and signal-conditioning ICs.
The INA117 product line was engineered specifically for high common-mode voltage measurement in industrial automation, test equipment, and medical imaging-delivering isolation-grade performance without isolated power or complex layout constraints.
FAQ
What is the maximum common-mode voltage the INA117PG4 can handle continuously?
The INA117PG4 supports a continuous common-mode input voltage range of ±200 V when operated with ±15 V supplies. This rating is specified under Recommended Operating Conditions and applies across the full –40°C to +85°C temperature range. Transient overloads up to ±500 V are permitted for ≤0.1 s per Absolute Maximum Ratings, enabling robust operation in surge-prone industrial environments. The INA117PG4 achieves this via integrated input protection circuitry and precision-matched internal resistors.
Does the INA117PG4 require external trimming for offset or CMRR calibration?
No, the INA117PG4 does not require external trimming for standard operation. Its laser-trimmed thin-film resistor network delivers 70 dB minimum CMRR and ±0.05% max gain error without user adjustment. Optional trim circuits (e.g., for offset voltage or CMR enhancement) are documented in the datasheet but are only needed in applications demanding >86 dB CMRR or sub-100 µV offset-scenarios where source impedances exceed 75 Ω on input pins or 4 Ω on reference pins. For most implementations, the INA117PG4 performs as specified out-of-the-box.
Can the INA117PG4 operate from a single supply?
Yes, the INA117PG4 supports single-supply operation from +10 V to +36 V, as confirmed in Section 5.3 Recommended Operating Conditions. When using single-supply configuration, the reference pins (REFB and REFA) must be biased appropriately-typically REFB to ground and REFA to mid-supply-to center the output swing. Input common-mode range shifts accordingly (e.g., up to +300 V with +36 V supply), but differential input voltage remains limited to ±10 V. The INA117PG4's rail-to-rail output stage ensures usable dynamic range under these conditions.
How does the INA117PG4's bandwidth vary between manufacturing lots?
The INA117PG4's small-signal bandwidth (–3 dB) depends on Chip Site Origin (CSO): 200 kHz for CSO: SHE and 500 kHz for CSO: TID. This variation arises from two qualified fabrication flows, both fully characterized and specified in the Electrical Characteristics table. System designs must accommodate the lower bound (200 kHz) for guaranteed performance, though many applications benefit from the higher bandwidth of CSO: TID units. TI recommends designing for all CSOs to ensure robustness-no requalification is needed when either flow ships, as both meet all datasheet limits.
What is the purpose of the REFA and REFB pins on the INA117PG4?
The REFA (Pin 5) and REFB (Pin 1) pins implement the INA117PG4's extended transfer function: VOUT = V+IN – V–IN + 20×VREFA – 19×VREFB. This allows precise output offset control-e.g., shifting a ±10 V differential signal to a 0–20 V range for ADC interfacing-without external op amps. REFA accepts positive reference voltages (up to V+), while REFB accepts negative references (down to V–). Their high-impedance inputs draw negligible current, preserving accuracy. This capability makes the INA117PG4 uniquely suited for applications requiring programmable common-mode level translation.
INA117PG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- 120 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
INA117PG4 FAQ
1.How can I place an order for INA117PG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA117PG4 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 INA117PG4 reliable?
The price and inventory of INA117PG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA117PG4 is usually 5 days.
3.What payment methods are accepted for INA117PG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA117PG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA117PG4?
INA117PG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA117PG4 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 INA117PG4?
For technical support, including INA117PG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA117PG4 requirements.
6.How does Aetrix verify that INA117PG4 is sourced from the original manufacturer or authorized distributors?
All INA117PG4 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 INA117PG4 meets industry standards.
7.What is the process for return or replacement of INA117PG4?
All INA117PG4 units undergo pre-shipment inspection (PSI). If there is an issue with INA117PG4, 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 INA117PG4 part is unused and in its original packaging.
Return procedure for INA117PG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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