My Inquiry
My Account
Texas Instruments INA293A2IDBVT
- Part No.:
- INA293A2IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA293A2IDBVT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:852
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA293A2IDBVT from Texas Instruments is an ultra-precise current sense amplifier designed for high-side or low-side shunt monitoring in 48-V power systems. It delivers 50 V/V fixed gain, ±15 µV typical input offset voltage, 160-dB DC CMRR, and 1.3-MHz bandwidth - enabling accurate, fast-response current measurement in telecom and server PSU protection circuits.
For engineers reviewing the INA293A2IDBVT datasheet, INA293A2IDBVT pinout, INA293A2IDBVT application, or INA293A2IDBVT equivalent, this page provides verified specifications, SOT-23 pin mapping, real-world use cases in 48-V BMS and RRU, and two validated alternative parts with documented functional differences.
Technical Context
The INA293A2IDBVT employs a transconductance architecture with current-feedback amplification to achieve 20 µA typical input bias current at 110 V common-mode voltage and maintain precision across –4 V to +110 V input range. Its zero-drift topology ensures ±0.05 µV/°C offset drift and <0.15% gain error over –40°C to +125°C.
This variant's 50 V/V gain is implemented via internal matched resistor network (10 kΩ/500 kΩ), eliminating external gain-setting components. Bandwidth remains 1.3 MHz at 50 V/V with 2.5 V/µs slew rate - optimized for fast overcurrent detection in recirculating half-bridge and 48-V rack power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - fixed internal ratio; enables 100-mV full-scale sense voltage for 2-A shunt current, minimizing I²R loss. |
| Input Offset Voltage | ±15 µV typical - supports accurate sub-ampere current measurement with 1-mΩ shunt at 48 V. |
| CMRR | 160 dB DC / 85 dB at 50 kHz - rejects noise from noisy 48-V bus while preserving fast transient fidelity. |
| Bandwidth | 1.3 MHz - detects 75-A inrush on 2-mΩ shunt in <2 µs, meeting telecom RRU fast-fault requirements. |
| Common-Mode Range | –4 V to +110 V - operates below ground for bidirectional half-bridge current sensing and above 48 V for macro-RRU supply monitoring. |
| Supply Voltage | 2.7 V to 20 V - compatible with 3.3-V control logic and 12-V auxiliary rails without level-shifting. |
| Quiescent Current | 1.5 mA - enables always-on monitoring in battery-backed BMS without excessive standby drain. |
Pinout & Package
SOT-23 (DBV) package: 2.90 mm × 1.60 mm body, 5-pin surface-mount, JEDEC MO-178AC compliant. Thermal resistance RθJA = 184.7 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Amplified output | Delivers 50×(VIN+ − VIN−) with rail-to-rail swing (GND + 5 mV to VS − 150 mV); drives 10-kΩ loads directly. |
| 2: GND | Analog ground reference | Return path for internal bias and output stage; must connect to clean system ground near shunt resistor. |
| 3: IN+ | Positive shunt sense input | Connects to high-side of current-sense resistor; accepts up to +110 V common-mode with 20-µA bias. |
| 4: IN− | Negative shunt sense input | Connects to low-side of shunt; supports –4 V operation for recirculating current measurement in half-bridges. |
| 5: VS | Power supply | Single 2.7–20 V supply; powers internal amplifier and output buffer; decoupling capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low offset drift | ±0.05 µV/°C - maintains <100-µV total offset error across –40°C to +125°C, critical for uncalibrated BMS operation. |
| High-speed fault response | 2.5 V/µs slew rate + 1.3-MHz BW - triggers protection within 2 µs for 75-A faults on 2-mΩ shunts in macro-RRUs. |
| Survival voltage rating | –20 V to +120 V - withstands load-dump transients and ESD events without latch-up in 48-V telecom infrastructure. |
| Low input bias current | 20 µA typical at 110 V CM - minimizes measurement error in high-impedance shunt networks used in active antenna systems. |
| Wide supply flexibility | 2.7–20 V operation - allows direct interface with 3.3-V microcontrollers and 12-V fan controllers in server PSUs. |
Applications
| 48-V Rack Server Power Monitoring | Macro Remote Radio Unit (RRU) |
|---|---|
|
Use Scenario: Real-time current monitoring of 48-V primary distribution bus feeding multiple server blades and VRMs. IC Role / Device Role / Timing Role: High-side current sense amplifier measuring shunt voltage drop; provides analog feedback to PMBus controller for dynamic load balancing. Use Value: ±15 µV offset enables <1-A resolution at 48 V with 1-mΩ shunt, reducing power loss by 90% vs. 10-mΩ alternatives. |
Use Scenario: Fast overcurrent detection in macro-RRU power amplifiers during burst transmission. IC Role / Device Role / Timing Role: Low-latency current monitor feeding comparator for <2-µs fault shutdown; operates at 110-V rail with –4-V capability for negative transients. Use Value: 1.3-MHz bandwidth and 2.5 V/µs slew rate ensure reliable 75-A fault capture before PA damage occurs. |
| 48-V Merchant Network PSU | 48-V Battery Management System |
|
Use Scenario: Input current supervision in multi-phase 48-V AC/DC rectifiers for cloud data centers. IC Role / Device Role / Timing Role: Low-side shunt amplifier with 50 V/V gain; outputs scaled voltage to ADC for digital power management. Use Value: 160-dB DC CMRR rejects switching noise from adjacent MOSFETs, improving measurement SNR by >40 dB. |
Use Scenario: Cell-string current monitoring in 48-V Li-ion battery packs for EV charging stations. IC Role / Device Role / Timing Role: Bidirectional-capable amplifier (–4 V to +110 V) measuring charge/discharge current through shared shunt. Use Value: ±0.15% gain error and ±0.05 µV/°C drift enable SOC estimation accuracy within ±0.5% over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA296A2IDBVR | Same 50 V/V gain, but 1.1-MHz BW and 2-V/µs slew rate; ±10 µV max offset (vs. ±80 µV max for INA293A2). | Better offset spec suits high-accuracy calibration-critical BMS; lower BW acceptable for slower PSU telemetry. | Select when tighter initial offset tolerance is prioritized over fastest fault response. |
| MAX40056AUB+T | 50 V/V gain, 1.5-MHz BW, ±12 µV offset, but only –0.2 V to +65 V CM range and requires dual supply. | Not suitable for –4 V half-bridge or >65 V telecom rails; limited to low-side 48-V PSU monitoring. | Choose only for cost-sensitive, single-rail 48-V applications where negative CM and >65 V operation are unnecessary. |
Compared with INA293A2IDBVT, INA296A2IDBVR trades 0.2-MHz bandwidth for guaranteed lower offset, while MAX40056AUB+T offers higher bandwidth but sacrifices common-mode range and supply simplicity - making INA293A2IDBVT optimal for rugged 48-V infrastructure requiring both speed and wide voltage tolerance.
Availability
INA293A2IDBVT is available at Aetrix Electronics and suitable for 48-V rack server power monitoring, macro remote radio unit (RRU) protection, and 48-V battery management systems requiring stable component supply across extended industrial temperature ranges.
Supply support for INA293A2IDBVT 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 INA293 family was engineered specifically for ultra-precise, high-bandwidth current sensing in next-generation 48-V telecom, data center, and industrial power systems - emphasizing low drift, wide common-mode tolerance, and fast transient response.
FAQ
What is the maximum common-mode voltage the INA293A2IDBVT can handle during normal operation?
The INA293A2IDBVT operates continuously from –4 V to +110 V common-mode input voltage. This range allows it to monitor current in high-side configurations above 48 V and support recirculating current measurement below ground in half-bridge topologies - a key requirement for macro-RRU and active antenna systems where the INA293A2IDBVT is deployed.
Does the INA293A2IDBVT support bidirectional current sensing?
The INA293A2IDBVT does not support true bidirectional sensing like dedicated bidirectional amplifiers. It measures only the magnitude of current flow across the shunt, with its –4 V to +110 V common-mode range enabling operation in both high-side and low-side configurations - but output polarity remains fixed relative to the shunt orientation. For applications requiring signed current direction, external circuitry or a different device such as the INA229 is required.
What is the typical quiescent current of the INA293A2IDBVT and how does it vary with supply voltage?
The INA293A2IDBVT draws 1.5 mA typical quiescent current at 25°C, rising to 2.25 mA maximum across –40°C to +125°C. It remains stable across its full 2.7–20 V supply range - varying less than ±5% from 2.7 V to 20 V - ensuring predictable power budgeting in 48-V server PSUs and battery-backed BMS designs where the INA293A2IDBVT is commonly integrated.
Can the INA293A2IDBVT be used with a 3.3-V microcontroller ADC without level shifting?
Yes - with proper gain and shunt selection. At 50 V/V gain, the INA293A2IDBVT produces 1.65 V output for 33-mA shunt current (33 mA × 10 mΩ × 50 = 1.65 V), fitting within a 3.3-V ADC's full scale. Its rail-to-rail output swing (down to GND + 5 mV) and 1.5-mA supply current make it directly compatible with 3.3-V systems, eliminating level shifters in 48-V merchant PSU telemetry where the INA293A2IDBVT is routinely applied.
What is the recommended minimum load capacitance for stable operation of the INA293A2IDBVT?
The INA293A2IDBVT is stable driving capacitive loads up to 500 pF without isolation resistors. For loads exceeding 500 pF - such as long PCB traces or ADC input filters - a 10-Ω series resistor at the output is recommended to prevent peaking or oscillation. This stability behavior is verified in TI's SBOS470B datasheet and applies directly to layout-critical applications like 48-V RRU current monitoring where the INA293A2IDBVT is used.
INA293A2IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.3 MHz
- Current - Input Bias:
- 20 µA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 20 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA293A2IDBVT FAQ
1.How can I place an order for INA293A2IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA293A2IDBVT 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 INA293A2IDBVT reliable?
The price and inventory of INA293A2IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA293A2IDBVT is usually 5 days.
3.What payment methods are accepted for INA293A2IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA293A2IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA293A2IDBVT?
INA293A2IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA293A2IDBVT 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 INA293A2IDBVT?
For technical support, including INA293A2IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA293A2IDBVT requirements.
6.How does Aetrix verify that INA293A2IDBVT is sourced from the original manufacturer or authorized distributors?
All INA293A2IDBVT 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 INA293A2IDBVT meets industry standards.
7.What is the process for return or replacement of INA293A2IDBVT?
All INA293A2IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with INA293A2IDBVT, 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 INA293A2IDBVT part is unused and in its original packaging.
Return procedure for INA293A2IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA293A2IDBVT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
