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Texas Instruments INA2180A1IDSGR
- Part No.:
- INA2180A1IDSGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
INA2180A1IDSGR.pdf
- Description:
- IC CURRENT SENSE 2 CIRCUIT 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,417
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Product details
Overview
INA2180A1IDSGR from Texas Instruments is a dual-channel, high-precision current-sense amplifier with 20 V/V fixed gain, –0.2 V to +26 V common-mode input range, 350 kHz bandwidth, and ±150 µV maximum offset voltage at 0 V common-mode. It operates from 2.7 V to 5.5 V supply and draws ≤500 µA quiescent current, enabling accurate bidirectional current monitoring in motor control and battery management systems.
For engineers reviewing the INA2180A1IDSGR datasheet, INA2180A1IDSGR pinout, INA2180A1IDSGR application, or INA2180A1IDSGR equivalent, key selection criteria include its dual-channel integration for space-constrained PCBs, guaranteed low offset drift (≤1 µV/°C), high CMRR (≥84 dB), and WSON-8 package compatibility with automated assembly processes.
Technical Context
The INA2180A1IDSGR implements a precision current-shunt monitor architecture with matched internal gain resistors (20 V/V), enabling stable gain accuracy (±1% max) across temperature and supply variations. Its input stage supports true high-side and low-side sensing without requiring level-shifting circuitry.
Each channel features independent IN+ and IN– inputs referenced to a shared GND and VS rail, with output swing within 30 mV of rails under 10 kΩ load. The device maintains functional integrity over –40°C to +125°C and rejects supply noise (PSRR ≥84 dB) and common-mode transients (CMRR ≥84 dB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - eliminates external resistor matching errors and reduces board area vs discrete solutions |
| Common-mode range | –0.2 V to +26 V - enables direct sensing on 24-V bus rails without external level shifters |
| Bandwidth | 350 kHz - supports real-time current feedback in PWM-driven motor control loops |
| Offset voltage | ±150 µV max at VCM = 0 V - ensures <100 µA error in 5-mΩ shunt-based 5-A measurement |
| Quiescent current | 500 µA max - allows dual-channel sensing in always-on battery-powered systems |
| Supply voltage | 2.7 V to 5.5 V - compatible with single Li-ion or 3.3-V/5-V system rails |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive and industrial power modules |
Pinout & Package
The INA2180A1IDSGR is housed in an 8-pin WSON package (2.0 mm × 2.0 mm, 0.65 mm pitch) with exposed thermal pad. This thermally enhanced, leadless package supports high-density layouts and improves power dissipation in compact power stages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT1 | Analog output | Channel 1 voltage output proportional to sensed current; rail-to-rail capable (within 30 mV) |
| 2: IN–1 | Analog input | Negative input for channel 1; connects to load side (high-side) or ground side (low-side) of shunt |
| 3: IN+1 | Analog input | Positive input for channel 1; connects to bus side (high-side) or load side (low-side) of shunt |
| 4: GND | Analog ground | Reference node for all analog signals; must be connected to low-impedance system ground plane |
| 5: IN+2 | Analog input | Positive input for channel 2; electrically isolated from channel 1 inputs but shares same GND/VS |
| 6: IN–2 | Analog input | Negative input for channel 2; enables independent second current path monitoring |
| 7: OUT2 | Analog output | Channel 2 voltage output; fully independent with >120 dB channel separation at DC |
| 8: VS | Analog supply | Single 2.7–5.5 V power rail; powers both channels and internal reference network |
Key Features
| Feature | Design Value |
|---|---|
| Matched internal gain resistors | 20 V/V fixed ratio with ±1% max gain error - eliminates external resistor tolerance and thermal drift effects |
| High CMRR | ≥84 dB over –40°C to +125°C - rejects bus voltage ripple during high-current switching events |
| Low offset drift | ≤1 µV/°C - maintains sub-100 µA measurement stability across full industrial temperature range |
| Rail-to-rail output | Swings to within 30 mV of VS and GND - maximizes dynamic range for ADC interfacing with 3.3-V or 5-V references |
| Dual-channel isolation | ≥120 dB channel separation at DC - prevents crosstalk between motor phase and battery sense paths |
Applications
| Motor Phase Current Monitoring | Battery Pack Cell Balancing |
|---|---|
|
Use Scenario: Real-time phase current sampling in 3-phase BLDC motor drives using low-side shunts. IC Role / Device Role / Timing Role: Dual-channel INA2180A1IDSGR monitors two simultaneous phase currents with synchronized 350-kHz bandwidth. Use Value: Enables precise FOC (field-oriented control) with <100 µA current resolution and minimal latency. |
Use Scenario: Individual cell current measurement in 12S lithium-ion battery packs during charge/discharge cycles. IC Role / Device Role / Timing Role: Each channel independently senses current through parallel balancing resistors on adjacent cells. Use Value: Supports ±0.5% current accuracy across –20°C to +60°C, critical for state-of-charge convergence. |
| Solar Inverter DC Link Monitoring | Industrial PLC Output Module Protection |
|
Use Scenario: Bidirectional current sensing on DC link between MPPT stage and H-bridge in string inverters. IC Role / Device Role / Timing Role: High-side configuration measures up to 26 V common-mode DC bus with fast transient response. Use Value: Detects >10-A fault currents within 3 µs (via 2 V/µs slew rate), triggering shutdown before IGBT damage. |
Use Scenario: Overcurrent detection on 24-V digital output channels driving solenoids and relays. IC Role / Device Role / Timing Role: Low-side sensing per channel with integrated 20× gain delivers 100-mV/A output scaling. Use Value: Reduces BOM count by eliminating discrete op-amps and external gain resistors per output channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2180A1IDGKR | VSSOP-8 package (3.0 mm × 3.0 mm); 177.9°C/W θJA vs 74.9°C/W for WSON | Preferred for prototyping with through-hole adapters or legacy VSSOP footprints | Select when thermal margin >100°C/W is acceptable and manual rework is required |
| INA240A1DRCR | Higher precision (±10 µV offset), wider common-mode (–4 V to +80 V), higher quiescent current (1.1 mA) | Required for 48-V industrial buses or safety-critical overcurrent cutoff with tighter error budgets | Select when sensing beyond 26 V or sub-10-µA offset is mandatory; accept higher power and cost |
Compared with INA2180A1IDGKR, the INA2180A1IDSGR offers superior thermal performance in space-constrained designs; compared with INA240A1DRCR, it trades absolute precision and voltage range for lower power and cost in 24-V systems.
Availability
INA2180A1IDSGR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for INA2180A1IDSGR 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 company specializing in analog and embedded processing technologies, with leadership in precision signal chain and power management ICs.
The INA2180 series belongs to TI's current-sense amplifier product line, designed specifically for cost-optimized, high-accuracy bidirectional current monitoring in industrial, automotive, and renewable energy systems.
FAQ
What is the maximum common-mode voltage supported by the INA2180A1IDSGR?
The INA2180A1IDSGR supports a common-mode input voltage range from –0.2 V to +26 V. This allows direct high-side sensing on 24-V industrial buses without external level-shifting circuitry. The specification is guaranteed over the full operating temperature range (–40°C to +125°C) and applies independently to each channel of the INA2180A1IDSGR.
Does the INA2180A1IDSGR require external gain-setting resistors?
No, the INA2180A1IDSGR integrates a precision-matched 20 V/V resistor network internally. This eliminates external components, reduces layout sensitivity, and ensures ±1% maximum gain error across temperature. The fixed gain is factory-trimmed and does not require calibration or external tuning for the INA2180A1IDSGR.
What is the thermal performance difference between the WSON and VSSOP packages of the INA2180A1IDSGR?
The INA2180A1IDSGR in WSON-8 (DSG) has a junction-to-ambient thermal resistance (θJA) of 74.9°C/W, significantly lower than the VSSOP-8 (DGK) version at 177.9°C/W. This 58% improvement enables higher power density and safer operation in thermally constrained PCBs without forced airflow.
Can the INA2180A1IDSGR be used for bidirectional current sensing?
Yes, the INA2180A1IDSGR supports bidirectional current sensing via its rail-to-rail output stage and symmetric input architecture. With appropriate shunt placement and reference biasing, it resolves current direction and magnitude - for example, distinguishing charge vs discharge in battery systems using the same INA2180A1IDSGR device.
What is the output voltage swing capability of the INA2180A1IDSGR at full temperature range?
The INA2180A1IDSGR delivers output swing within 30 mV of the supply rail (VS) and ground (GND) under 10-kΩ load, across –40°C to +125°C. This rail-to-rail behavior ensures maximum dynamic range when interfacing with 3.3-V or 5-V ADCs, directly supporting the design requirements of the INA2180A1IDSGR.
INA2180A1IDSGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 350 kHz
- Current - Input Bias:
- 80 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 355µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (2x2)
INA2180A1IDSGR FAQ
1.How can I place an order for INA2180A1IDSGR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA2180A1IDSGR 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 INA2180A1IDSGR reliable?
The price and inventory of INA2180A1IDSGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA2180A1IDSGR is usually 5 days.
3.What payment methods are accepted for INA2180A1IDSGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA2180A1IDSGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA2180A1IDSGR?
INA2180A1IDSGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA2180A1IDSGR 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 INA2180A1IDSGR?
For technical support, including INA2180A1IDSGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA2180A1IDSGR requirements.
6.How does Aetrix verify that INA2180A1IDSGR is sourced from the original manufacturer or authorized distributors?
All INA2180A1IDSGR 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 INA2180A1IDSGR meets industry standards.
7.What is the process for return or replacement of INA2180A1IDSGR?
All INA2180A1IDSGR units undergo pre-shipment inspection (PSI). If there is an issue with INA2180A1IDSGR, 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 INA2180A1IDSGR part is unused and in its original packaging.
Return procedure for INA2180A1IDSGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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