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Texas Instruments INA4290A1IRGVT
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- Part No.:
- INA4290A1IRGVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
INA4290A1IRGVT.pdf
- Description:
- IC CURR SENSE 4 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:276
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Product details
Overview
INA4290A1IRGVT from Texas Instruments is a quad-channel, ultra-precise current-sense amplifier designed for high-side sensing in 48-V and 120-V power rails. It delivers 20 V/V fixed gain, ±12 µV max input offset voltage, 160-dB DC CMRR, and 1.1-MHz bandwidth - enabling accurate real-time current monitoring in telecom power supplies and server rack PDUs.
For engineers reviewing the INA4290A1IRGVT datasheet, INA4290A1IRGVT pinout, INA4290A1IRGVT application, or INA4290A1IRGVT equivalent, this page provides verified technical context, validated pin functions, confirmed quad-channel timing behavior, and direct alternative part comparisons for high-voltage, multi-rail current measurement systems.
Technical Context
The INA4290A1IRGVT employs a zero-drift transconductance architecture with current-feedback amplifiers, supporting high-side-only sensing across 2.7 V to 120 V common-mode range. Its internal precision resistor network fixes gain at 20 V/V, eliminating external gain-setting components while maintaining ±0.1% max gain error and ±5 ppm/°C drift.
Each of its four independent channels features matched input bias current (≤30 µA), 2 V/µs slew rate, and 85-dB AC CMRR at 50 kHz - ensuring channel-to-channel isolation and stable operation under fast transient conditions in multirail 48-V server and RRU power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V - fixed internal ratio enables precise, temperature-stable output scaling without external resistors. |
| Input Offset Voltage | ±12 µV (max) - supports accurate low-current sensing down to sub-mA levels with mΩ shunts. |
| CMRR | 160 dB DC - rejects bus voltage ripple and noise in high-noise 48-V/120-V power domains. |
| Bandwidth | 1.1 MHz - enables detection of fast overcurrent events (e.g., short-circuit response in <10 µs). |
| Supply Range | 2.7 V to 20 V - compatible with single-supply 3.3-V or 5-V logic interfaces while monitoring up to 120-V rails. |
| Quiescent Current | 1.25 mA (typical, per device) - four channels draw only ~312 µA/channel, minimizing system standby loss. |
| Operating Temp | −40°C to +125°C - qualified for industrial and telecom base station environments with no derating. |
Pinout & Package
The INA4290A1IRGVT is housed in a 4 mm × 4 mm, 16-pin QFN package (RGV) with exposed thermal pad. Pin numbering follows TI's standard top-view layout; thermal pad may be left floating or connected to GND for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+1, IN+2, IN+3, IN+4 | Positive input (x4) | Connect to supply side of respective shunt resistor; supports 2.7–120 V common-mode. |
| IN−1, IN−2, IN−3, IN−4 | Negative input (x4) | Connect to load side of respective shunt; differential input range ±30 V max. |
| OUT1–OUT4 | Analog output (x4) | Voltage output = 20 × (IN+ − IN−); rail-to-rail swing within 70 mV of VS and 25 mV of GND. |
| VS (pins 14, 15) | Power supply | Single 2.7–20 V supply powers all four channels; decoupling required at each VS pin. |
| GND (pins 6, 7) | Ground reference | Dual ground pins reduce ground bounce; must connect to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset drift | ±0.2 µV/°C - maintains accuracy across −40°C to +125°C without calibration. |
| High AC CMRR | 85 dB at 50 kHz - suppresses switching noise from adjacent buck converters or inverters. |
| Low input bias current | ≤30 µA - minimizes error in high-value shunt applications (e.g., 100 mΩ+), preserving measurement fidelity. |
| Channel separation | ≥140 dB at 100 kHz - prevents crosstalk between monitored rails in dense multichannel PDU designs. |
| Fast settling time | 9 µs to 0.5% - meets real-time protection requirements for telecom and server power sequencing. |
Applications
| Active Antenna System (mMIMO) | 48-V Rack Server PDU |
|---|---|
Use Scenario: Real-time per-antenna transmit current monitoring in 64T64R mMIMO base stations. IC Role / Device Role / Timing Role: High-side current sense amplifier on RF power amplifier supply rails, delivering analog feedback to FPGA-based closed-loop control. Use Value: Enables dynamic PA bias adjustment and fault detection within 10 µs, improving spectral efficiency and preventing thermal runaway. |
Use Scenario: Simultaneous current monitoring of 4 independent 48-V output rails in modular server power distribution units. IC Role / Device Role / Timing Role: Quad-channel current sensor providing isolated analog outputs for microcontroller ADC sampling at 10 kSPS. Use Value: Eliminates need for four discrete amplifiers, reducing BOM count by 75% and PCB area by >40% vs. single-channel solutions. |
| Macro Remote Radio Unit (RRU) | 48-V Merchant Network Switch |
Use Scenario: Monitoring DC feed current to remote radio heads over long-distance copper pairs. IC Role / Device Role / Timing Role: High-common-mode amplifier sensing current upstream of PoE-like DC feed circuitry, rejecting induced line noise. Use Value: Maintains ±0.5% full-scale accuracy despite ±120 V transients and 50-kHz EMI, ensuring reliable link health reporting. |
Use Scenario: Per-port current supervision in high-density 48-V Ethernet switches with 48+ ports. IC Role / Device Role / Timing Role: Quad-channel sensing on grouped port banks (e.g., 4×12 ports), feeding digital isolators for MCU readout. Use Value: Supports IEEE 802.3bt Class 5/6 power budgeting with <1% gain error drift over temperature, enabling precise port-level power capping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA4290A2IRGVT | 50 V/V fixed gain; same package, offset ±12 µV max, bandwidth 1.1 MHz. | Better SNR for lower-current rails (e.g., 12-V auxiliary supplies); requires recalibration of ADC scaling. | Select when sensing ≤200 mA through 10 mΩ shunts where higher gain improves resolution. |
| INA2290A1IDGKT | Dual-channel version in MSOP-8; identical A1 gain, offset, and CMRR specs; quiescent current 680 µA (vs. 1.25 mA). | Lower channel density suits dual-rail systems (e.g., +48 V / −48 V); smaller footprint but no thermal pad. | Choose for space-constrained dual-monitoring applications where quad integration is unnecessary. |
Compared with INA4290A1IRGVT, the A2 variant offers higher gain for improved low-current resolution but reduces dynamic range, while the INA2290A1IDGKT trades channel count for reduced board area and power - making the INA4290A1IRGVT optimal for compact, high-density 4-rail monitoring where thermal management and channel matching are critical.
Availability
INA4290A1IRGVT is available at Aetrix Electronics and suitable for 48-V rack servers, macro RRUs, and active antenna systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for INA4290A1IRGVT 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 power rail monitoring in telecom infrastructure, datacenter power systems, and industrial automation.
FAQ
What is the maximum common-mode voltage the INA4290A1IRGVT can withstand during normal operation?
The INA4290A1IRGVT operates continuously across a common-mode input range of 2.7 V to 120 V. Its survival rating extends to −20 V to +122 V, allowing tolerance of brief transients beyond operational limits. This makes the INA4290A1IRGVT suitable for direct connection to 48-V and 120-V bus lines without external level-shifting circuitry.
Does the INA4290A1IRGVT support bidirectional current sensing?
No - the INA4290A1IRGVT is a high-side-only current-sense amplifier with unidirectional topology. Its input stage is optimized for sensing current flowing from supply to load (positive VSENSE). Bidirectional measurement requires separate devices or a dedicated bidirectional amplifier such as the INA240.
Can the INA4290A1IRGVT drive a capacitive load of 1 nF directly?
No - the INA4290A1IRGVT specifies a maximum stable capacitive load of 500 pF without isolation resistance. Driving 1 nF risks instability and overshoot. For larger loads, add a 1–10 Ω series resistor between OUT and the capacitor, or use a unity-gain buffer stage.
How does the thermal pad on the INA4290A1IRGVT package affect performance?
The exposed thermal pad on the INA4290A1IRGVT's RGV package significantly lowers junction-to-board thermal resistance (RθJB = 21.0 °C/W). Connecting it to a solid GND plane improves power dissipation and stabilizes offset drift over temperature - especially critical during sustained 1.25-mA quiescent operation across all four channels.
Is the gain of the INA4290A1IRGVT adjustable via external resistors?
No - the INA4290A1IRGVT uses an internal precision resistor network to fix gain at 20 V/V. TI explicitly advises against adding external resistors to modify gain, as absolute resistor values vary significantly across units; doing so degrades accuracy and violates specified gain error limits.
INA4290A1IRGVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
INA4290A1IRGVT FAQ
1.How can I place an order for INA4290A1IRGVT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA4290A1IRGVT 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 INA4290A1IRGVT reliable?
The price and inventory of INA4290A1IRGVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA4290A1IRGVT is usually 5 days.
3.What payment methods are accepted for INA4290A1IRGVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA4290A1IRGVT transactions.
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4.How is shipping managed for INA4290A1IRGVT?
INA4290A1IRGVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA4290A1IRGVT 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 INA4290A1IRGVT?
For technical support, including INA4290A1IRGVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA4290A1IRGVT requirements.
6.How does Aetrix verify that INA4290A1IRGVT is sourced from the original manufacturer or authorized distributors?
All INA4290A1IRGVT 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 INA4290A1IRGVT meets industry standards.
7.What is the process for return or replacement of INA4290A1IRGVT?
All INA4290A1IRGVT units undergo pre-shipment inspection (PSI). If there is an issue with INA4290A1IRGVT, 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 INA4290A1IRGVT part is unused and in its original packaging.
Return procedure for INA4290A1IRGVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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