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Texas Instruments INA201AIDGKR
- Part No.:
- INA201AIDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA201AIDGKR.pdf
- Description:
- IC CURRENT MONITOR 3.5% 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,911
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Product details
Overview
INA201AIDGKR from Texas Instruments is a high-side current-shunt monitor IC with integrated open-drain comparator and 0.6-V internal reference, designed for precise overcurrent detection in power rails up to 80 V common-mode. It delivers 50 V/V gain, 300 kHz bandwidth, ±2.5 mV input offset (25°C), and operates from 2.7 V to 18 V supply across –40°C to +125°C - used in telecom power supplies for real-time load current monitoring and fault latching.
For engineers reviewing the INA201AIDGKR datasheet, INA201AIDGKR pinout, INA201AIDGKR application, or INA201AIDGKR equivalent, this page provides verified technical context, validated pin functions, confirmed comparator latching behavior, exact gain and accuracy specs per temperature, and two rigorously cross-checked alternative parts for overcurrent protection designs.
Technical Context
The INA201AIDGKR implements a precision current-sense amplifier with fixed 50 V/V gain and an independent open-drain comparator referenced to a 0.6-V internal threshold. Its input stage supports –16 V to 80 V common-mode voltage while rejecting supply and common-mode disturbances with ≥100 dB CMR (12–80 V range) and ≥2.5 μV/V PSR.
Comparator operation includes latching mode (enabled by pulling RESET high) and transparent mode (RESET grounded or open), with 1.3 μs typical response time, 590–625 mV trip threshold (–40°C to 125°C), and 8 mV hysteresis. The output stage drives external pull-up loads up to 18 V independent of VS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50 V/V - scales shunt voltage drop linearly to output; enables 20-mV full-scale sense to produce 1-V output. |
| Common-Mode Range | –16 V to 80 V - supports high-side sensing in negative-rail systems (e.g., automotive battery monitoring) and positive high-voltage rails (e.g., 48-V telecom). |
| Input Offset Voltage | ±2.5 mV (25°C), ±3.5 mV (–40°C to 25°C) - defines minimum resolvable sense voltage; RTI error directly impacts low-current accuracy. |
| Bandwidth | 300 kHz - supports fast transient detection (e.g., short-circuit events in DC-DC converters) without excessive phase lag. |
| Quiescent Current | 1800 μA max - enables integration into always-on power monitoring paths without significant system-level current penalty. |
| Comparator Threshold | 590–625 mV (–40°C to 125°C) - stable reference for external resistor-divider trip-point setting; 8 mV hysteresis prevents chatter near threshold. |
| Supply Voltage | 2.7 V to 18 V - compatible with single-supply industrial logic (3.3 V/5 V) and wide-input power management ICs (e.g., 12-V server PSUs). |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm body), thermally enhanced for high-density PCB layouts; pin-compatible with SOIC-8 variant (INA201AIDR) but with reduced footprint and improved θJA (200°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Analog input | Connects to high side of shunt; common-mode voltage here defines operating range (–16 V to 80 V). |
| VIN− | Analog input | Connects to low side of shunt; differential input (VIN+ − VIN−) determines output voltage scale. |
| OUT | Analog output | Voltage output = 50 × (VIN+ − VIN−); rail-to-rail swing limited to (VS − 0.25 V) to GND + 50 mV. |
| CMPOUT | Open-drain comparator output | Active-low latched or transparent fault signal; requires external pull-up (to 2.7–18 V) for logic-level interfacing. |
| CMPIN | Comparator input | Accepts scaled shunt voltage via external divider; referenced to internal 0.6-V threshold for overcurrent decision. |
| RESET | Digital control input | Active-low reset: grounding or leaving open enables transparent comparator; pulling high enables latching mode. |
| VS | Power supply | Single 2.7–18 V analog supply; powers both amplifier and comparator; quiescent current ≤1800 μA. |
| GND | Analog ground | Reference node for amplifier output and comparator threshold; must be low-impedance Kelvin return path. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.6-V reference | Eliminates need for external precision reference; enables stable trip-point setting across temperature (±14 mV drift over –40°C to 125°C). |
| Latching comparator | Retains fault state until explicit RESET assertion - critical for safety-critical shutdown (e.g., disabling gate drivers after overcurrent). |
| High common-mode rejection | ≥100 dB CMR at 12–80 V common-mode - rejects noise from switching regulators and bus transients during high-side sensing. |
| Wide supply range | 2.7–18 V operation - allows direct interface with 3.3-V microcontrollers and 12-V power rails without level-shifting. |
| Thermal performance | VSSOP-8 θJA = 200°C/W - supports continuous operation at full rating in compact, unventilated enclosures (e.g., embedded telecom modules). |
Applications
| Telecom Power Supply Monitoring | Battery Management System (BMS) |
|---|---|
Use Scenario: Real-time current measurement and overcurrent latching in 48-V intermediate bus converters feeding base station RF amplifiers. IC Role / Device Role / Timing Role: High-side shunt monitor providing isolated current feedback to PMBus controller; comparator latches fault to disable downstream converters within 1.3 μs. Use Value: Prevents thermal runaway in GaN FETs by detecting >10-A faults before MOSFET SOA violation; 300-kHz bandwidth captures fast load transients. |
Use Scenario: Cell-level overcurrent protection in 16S Li-ion battery packs for EV charging stations. IC Role / Device Role / Timing Role: Monitors individual cell string current; comparator output triggers isolation relay via optocoupler when external divider sets 5-A trip point. Use Value: Enables ±2.5-mV offset accuracy to resolve <50-mA fault currents at 100-mΩ shunt; –16-V to 80-V range accommodates pack voltage swings during charge/discharge. |
| Industrial Motor Drive Protection | Server PSU Redundancy Control |
Use Scenario: Phase current monitoring and short-circuit detection in 24-V brushless DC motor controllers. IC Role / Device Role / Timing Role: Senses shunt on high-side leg of half-bridge; latched CMPOUT disables PWM generation via FPGA interrupt. Use Value: 50-V/V gain resolves 20-mV sense drops (400-mA at 50-mΩ shunt); 1.3-μs comparator response ensures IGBT turn-off before destructive energy buildup. |
Use Scenario: Load-sharing current balancing and fault isolation between redundant 12-V server PSUs. IC Role / Device Role / Timing Role: Measures output current of each PSU; comparator flags >5% imbalance to trigger hot-swap controller reconfiguration. Use Value: 3.5% max total error over temperature ensures reliable imbalance detection across –40°C to +125°C ambient; VSSOP-8 footprint fits tight board spacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA200AIDGKR | 20 V/V gain, 500 kHz bandwidth, same 0.6-V reference and latching comparator. | Better suited for higher full-scale sense voltages (>50 mV) where lower gain improves noise immunity and reduces offset impact. | Select when shunt voltage exceeds 50 mV at max load; retains identical pinout, package, and comparator interface. |
| INA202AIDGKR | 100 V/V gain, 200 kHz bandwidth, same reference and latching architecture. | Optimized for ultra-low shunt voltages (<20 mV) in high-current, low-loss applications (e.g., 0.5-mΩ shunts at 100 A). | Choose when minimizing IR drop is critical; trade-off is reduced bandwidth and higher sensitivity to input offset error. |
Compared with INA201AIDGKR, the INA200AIDGKR offers higher bandwidth and lower gain for robustness against noise in medium-current systems, while the INA202AIDGKR provides double the gain for sub-20-mV sensing at the cost of bandwidth - all three share identical pinout, comparator logic, and thermal specs in VSSOP-8.
Availability
INA201AIDGKR is available at Aetrix Electronics and suitable for telecom power supplies, battery management systems, industrial motor drives, and server PSU redundancy control requiring stable component supply and guaranteed long-term sourcing.
Supply support for INA201AIDGKR 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 INA20x family was engineered specifically for high-reliability overcurrent protection in high-common-mode industrial and telecom power systems - emphasizing latch stability, wide voltage tolerance, and minimal external component count.
FAQ
What is the maximum common-mode voltage supported by the INA201AIDGKR?
The INA201AIDGKR supports a common-mode input voltage range of –16 V to 80 V, enabling high-side current sensing in both negative-rail (e.g., automotive cold-crank) and high-voltage positive-rail (e.g., 48-V telecom) applications. This specification is guaranteed across the full –40°C to +125°C operating temperature range and is not dependent on supply voltage.
How does the latching comparator function in the INA201AIDGKR?
The INA201AIDGKR's comparator enters latching mode when the RESET pin is pulled high; once triggered, CMPOUT remains low until RESET is actively driven low. When RESET is grounded or left floating, the comparator operates transparently - asserting CMPOUT low only while the input exceeds the 0.6-V threshold. This dual-mode behavior is confirmed in Section 7.3.3 of the SBOS374E datasheet.
Can the INA201AIDGKR operate from a 3.3-V supply?
Yes, the INA201AIDGKR operates from 2.7 V to 18 V, including standard 3.3-V logic supplies. At 3.3 V, its output swing is specified from GND + 4 mV to VS – 0.25 V (i.e., up to 3.05 V), and the comparator output remains functional with external pull-up to any voltage between 2.7 V and 18 V - verified in Electrical Characteristics Tables 6.5 and 6.6.
What is the gain error specification for the INA201AIDGKR over temperature?
The INA201AIDGKR has a gain error of ±1% at 25°C and ±2% over the full –40°C to +125°C temperature range, as specified in Table 6.5 of the SBOS374E datasheet. Total output error - combining gain error and input offset - reaches ±3.5% under worst-case conditions (VSENSE = 120 mV, VS = 16 V, full temperature range).
Is the INA201AIDGKR pin-compatible with other devices in the INA20x family?
Yes, the INA201AIDGKR shares identical pinout, package (VSSOP-8), and electrical interface with the INA200AIDGKR and INA202AIDGKR. All three devices use the same VS, GND, VIN+, VIN−, OUT, CMPIN, CMPOUT, and RESET connections - allowing direct substitution when adjusting gain (20/50/100 V/V) without PCB redesign.
INA201AIDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±3.5%
- Voltage - Input:
- -16V ~ 80V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA201AIDGKR FAQ
1.How can I place an order for INA201AIDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA201AIDGKR 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 INA201AIDGKR reliable?
The price and inventory of INA201AIDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA201AIDGKR is usually 5 days.
3.What payment methods are accepted for INA201AIDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA201AIDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA201AIDGKR?
INA201AIDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA201AIDGKR 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 INA201AIDGKR?
For technical support, including INA201AIDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA201AIDGKR requirements.
6.How does Aetrix verify that INA201AIDGKR is sourced from the original manufacturer or authorized distributors?
All INA201AIDGKR 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 INA201AIDGKR meets industry standards.
7.What is the process for return or replacement of INA201AIDGKR?
All INA201AIDGKR units undergo pre-shipment inspection (PSI). If there is an issue with INA201AIDGKR, 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 INA201AIDGKR part is unused and in its original packaging.
Return procedure for INA201AIDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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