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Texas Instruments INA4290A2IRGVR
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- Part No.:
- INA4290A2IRGVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
INA4290A2IRGVR.pdf
- Description:
- IC CURR SENSE 4 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,634
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Product details
Overview
INA4290A2IRGVR from Texas Instruments is a quad-channel, ultra-precise, high-side current-sense amplifier with 50 V/V fixed gain, 1.1-MHz bandwidth, ±12 µV max offset voltage, and 160-dB DC CMRR - designed for precision shunt-based current monitoring in 48-V server power rails and remote radio units.
For engineers reviewing the INA4290A2IRGVR datasheet, INA4290A2IRGVR pinout, INA4290A2IRGVR application, or INA4290A2IRGVR equivalent, this page delivers verified specifications, validated quad-channel pin mapping, real-world use cases in telecom and datacenter power systems, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The INA4290A2IRGVR uses a zero-drift transconductance architecture with current-feedback amplification to achieve 20 µA typical input bias current and operation up to 120 V common-mode voltage. Its high DC CMRR (160 dB) and AC CMRR (85 dB at 50 kHz) enable accurate sensing in noisy, high-voltage environments.
It supports four independent channels in a single 4 mm × 4 mm QFN-16 package, each with rail-to-rail output swing (VS – 0.2 V min), 2 V/µs slew rate, and guaranteed performance from –40°C to +125°C - optimized for fast overcurrent detection and stable DC measurement in multichannel power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - fixed internal ratio enables precise scaling of shunt voltage to measurable output without external components. |
| Offset Voltage (max) | ±12 µV - allows accurate sensing down to sub-millivolt VSENSE levels, critical for low-current or low-RSENSE applications. |
| CMRR (DC) | 160 dB - rejects common-mode noise from high-voltage bus transients, preserving measurement integrity in 48-V/120-V systems. |
| Bandwidth | 1.1 MHz at 50 V/V - supports rapid response for overcurrent protection and dynamic load monitoring in telecom RRU and AAS. |
| Supply Range | 2.7 V to 20 V - compatible with standard logic supply rails while enabling full-scale output swing across wide VCM range. |
| Quiescent Current | 1.25 mA per channel (typical) - total 5 mA for all four channels, minimizing system-level power overhead in always-on monitoring. |
| Operating Temp | –40°C to +125°C - qualified for industrial and telecom infrastructure deployments without derating. |
Pinout & Package
The INA4290A2IRGVR is housed in a thermally enhanced 4 mm × 4 mm QFN-16 package (RGV) with exposed thermal pad (optional GND connection). Pin count and layout match TI's official RGV footprint for mechanical compatibility and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+1, IN+2, IN+3, IN+4 | Positive input (x4) | Connect to high-side (bus-voltage side) of respective shunt resistors - defines current direction and reference point. |
| IN−1, IN−2, IN−3, IN−4 | Negative input (x4) | Connect to low-side (load side) of respective shunt resistors - completes differential sense path per channel. |
| OUT1, OUT2, OUT3, OUT4 | Output (x4) | Rail-to-rail analog outputs scaled by 50× VSENSE; each drives 10-kΩ load with <0.2-V headroom to VS. |
| VS (pins 14, 15) | Power supply | Dual-pinned for low-impedance supply routing; accepts 2.7–20 V with internal regulation for stable gain accuracy. |
| GND (pins 6, 7) | Ground reference | Dual-pinned ground plane connection - minimizes ground bounce and improves PSRR across all channels. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset drift | ±0.2 µV/°C - ensures <1 µV total offset shift over full temperature range, eliminating recalibration in embedded systems. |
| High AC CMRR | 85 dB at 50 kHz - maintains accuracy during switching noise events in buck converters and digital load transients. |
| Channel separation | ≥140 dB at 100 kHz - prevents crosstalk between adjacent channels in dense multirail monitoring (e.g., 48-V rack servers). |
| Survival voltage rating | –20 V to +122 V - protects against bus faults, reverse polarity, and ESD-induced transients without latch-up. |
| Low input bias current | 20 µA (typ) - reduces error from shunt self-heating and enables use with high-value sense resistors in µA-range sensing. |
Applications
| 48-V Rack Server Power Monitoring | Macro Remote Radio Unit (RRU) |
|---|---|
|
Use Scenario: Real-time current monitoring across multiple 48-V distribution rails feeding FPGAs, ASICs, and RF front-ends in telco base stations. IC Role / Device Role / Timing Role: Quad-channel high-side current sensor providing simultaneous analog outputs for four independent power domains. Use Value: Enables per-rail fault logging and dynamic power budgeting without multiplexing delay - leveraging 1.1-MHz bandwidth for transient capture. |
Use Scenario: Precision current feedback for PA bias control and DC-DC converter supervision in outdoor macro-cell RRUs operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: High-CMRR current amplifier interfacing directly to ADC inputs of system management controllers. Use Value: ±12 µV offset and 160-dB CMRR ensure <0.1% full-scale error despite 120-V bus coupling and RF interference. |
| Active Antenna System (AAS) | Test & Measurement Shunt Analyzer |
|
Use Scenario: Per-element current verification in mMIMO antenna arrays where compact size and thermal stability are critical. IC Role / Device Role / Timing Role: Four-channel current monitor integrated into compact AAS PCBs with shared thermal pad for uniform channel matching. Use Value: 4 mm × 4 mm QFN footprint and ±5 ppm/°C gain drift allow consistent calibration across 64+ antenna elements without per-channel trimming. |
Use Scenario: Benchtop current measurement module for validating shunt resistor accuracy and characterizing low-power ICs under test. IC Role / Device Role / Timing Role: Precision analog front-end converting mV-level shunt drops into calibrated 0–5 V outputs for DAQ systems. Use Value: 50 V/V gain and 1.1-MHz bandwidth support both DC calibration sweeps and pulsed-load dynamic testing up to 100 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA4290A1IRGVR | 20 V/V gain, ±25 µV max offset, identical package and bandwidth | Better suited for higher VSENSE ranges (>100 mV); lower gain reduces noise gain but requires larger shunt for same output span | Select when measuring currents >5 A with 1-mΩ shunts or when prioritizing SNR over resolution at low currents. |
| INA4290A3IRGVR | 100 V/V gain, ±15 µV max offset, same thermal specs and pinout | Optimized for sub-50-mV VSENSE; enables use of <0.5-mΩ shunts in high-current 48-V systems with minimal I²R loss | Choose for ultra-low-loss power delivery networks where shunt wattage must stay below 100 mW at full load. |
Compared with INA4290A1IRGVR and INA4290A3IRGVR, the INA4290A2IRGVR strikes a balanced trade-off: its 50 V/V gain delivers optimal dynamic range for 10–100 mV VSENSE signals common in 48-V telecom supplies, while maintaining tighter offset than the A1 variant and lower noise gain than the A3 - simplifying signal chain design without sacrificing accuracy or thermal margin.
Availability
INA4290A2IRGVR is available at Aetrix Electronics and suitable for 48-V rack server power monitoring, macro remote radio unit (RRU) current feedback, and active antenna system (AAS) element-level sensing requiring stable component supply and long-term production continuity.
Supply support for INA4290A2IRGVR 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 conditioning and power management ICs.
The INA4290 series belongs to TI's ultra-precise current-sense amplifier product line, engineered specifically for high-voltage, high-accuracy shunt-based monitoring in telecom infrastructure, datacenter power, and industrial automation systems.
FAQ
What is the maximum common-mode voltage supported by the INA4290A2IRGVR?
The INA4290A2IRGVR supports an operational common-mode input range from 2.7 V to 120 V, with survival capability up to –20 V and +122 V. This allows direct connection to 48-V and 120-V bus rails without level-shifting circuitry, and ensures robustness against transient overvoltage events in telecom and server applications.
Does the INA4290A2IRGVR require external gain-setting resistors?
No - the INA4290A2IRGVR features a factory-trimmed, fixed 50 V/V gain implemented via an internal precision resistor network. External resistors are not required or recommended, as TI specifies that adding external components may degrade accuracy due to mismatch and temperature drift of external parts.
How many independent current-sensing channels does the INA4290A2IRGVR provide?
The INA4290A2IRGVR integrates four fully independent, matched current-sense amplifier channels in a single QFN-16 package. Each channel has dedicated IN+, IN−, and OUT pins, enabling simultaneous monitoring of four separate power rails without multiplexing or timing interleaving.
What is the quiescent current consumption of the INA4290A2IRGVR?
The INA4290A2IRGVR draws 1.25 mA per channel (typical) at TA = 25°C and VS = 5 V, totaling ~5 mA for all four channels. Over temperature (–40°C to +125°C), quiescent current remains within 1.25–1.6 mA per channel, ensuring predictable power budgeting in thermally constrained designs.
Can the INA4290A2IRGVR be used in low-side current sensing configurations?
No - the INA4290A2IRGVR is explicitly designed for high-side sensing only. Its internal topology restricts operation to common-mode voltages ≥2.7 V and does not support ground-referenced (low-side) shunt configurations. For low-side applications, TI recommends the INA219 or similar devices.
INA4290A2IRGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 µA
- Voltage - Input Offset:
- 6 µV
- Current - Supply:
- 1.25mA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 20 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (4x4)
INA4290A2IRGVR FAQ
1.How can I place an order for INA4290A2IRGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA4290A2IRGVR 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 INA4290A2IRGVR reliable?
The price and inventory of INA4290A2IRGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA4290A2IRGVR is usually 5 days.
3.What payment methods are accepted for INA4290A2IRGVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA4290A2IRGVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA4290A2IRGVR?
INA4290A2IRGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA4290A2IRGVR 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 INA4290A2IRGVR?
For technical support, including INA4290A2IRGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA4290A2IRGVR requirements.
6.How does Aetrix verify that INA4290A2IRGVR is sourced from the original manufacturer or authorized distributors?
All INA4290A2IRGVR 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 INA4290A2IRGVR meets industry standards.
7.What is the process for return or replacement of INA4290A2IRGVR?
All INA4290A2IRGVR units undergo pre-shipment inspection (PSI). If there is an issue with INA4290A2IRGVR, 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 INA4290A2IRGVR part is unused and in its original packaging.
Return procedure for INA4290A2IRGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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