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Texas Instruments INA202AQDGKRQ1
- Part No.:
- INA202AQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
INA202AQDGKRQ1.pdf
- Description:
- IC CURRENT MONITOR 3.5% 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,519
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Product details
Overview
INA202AQDGKRQ1 from Texas Instruments is an automotive-grade, high-speed current-sense amplifier with integrated open-drain comparator and 0.6V internal reference, designed for low-side or high-side shunt monitoring in –16V to +80V common-mode systems. It delivers 100V/V gain, 200kHz bandwidth, ≤3.5% total output error over temperature, and operates from 2.7V–18V supply. It enables precise overcurrent detection in electric power steering and brake control modules.
For engineers reviewing the INA202AQDGKRQ1 datasheet, INA202AQDGKRQ1 pinout, INA202AQDGKRQ1 application, or INA202AQDGKRQ1 equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade specifications (AEC-Q100 Grade 1), and real-world design implications for EPS, ESC, and body control systems.
Technical Context
The INA202AQDGKRQ1 implements a precision current-shunt monitor with dual-op-amp front-end architecture enabling operation across –16V to +80V common-mode voltage while maintaining 100 dB CMR at 12V–80V. Its 100V/V fixed gain path supports 200kHz small-signal bandwidth and 2μs 1% settling time with 5pF load.
It integrates a latching open-drain comparator referenced to a trimmed 0.6V internal threshold (±14mV over –40°C to +125°C), with RESET pin control for transparent or latched operation. The comparator features 1.3μs typical response time, 220mV VOL at 2.35mA sink, and 15nA max input bias current on CMPIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100V/V - scales 10mV shunt drop to 1V output, enabling high-resolution sensing with standard ADC inputs |
| Bandwidth | 200kHz - supports fast transient current detection in motor control and safety-critical braking |
| Common-mode range | –16V to +80V - monitors shunts in battery-connected, reverse-battery-tolerant, or 48V hybrid architectures |
| Total output error | ±3.5% over –40°C to +125°C - ensures reliable trip-point accuracy without per-unit calibration |
| Comparator threshold | 0.6V ±14mV - sets overcurrent trip point via external resistor divider; stable over full temp and supply range |
| Quiescent current | 1800μA max - compatible with always-on vehicle subsystems requiring low standby power |
| Package | VSSOP-8 (3mm × 4.9mm) - compact footprint for space-constrained automotive ECUs with thermal resistance RθJA = 162.2°C/W |
Pinout & Package
VSSOP-8 package (DGK) with 0.65mm pitch, 3mm × 4.9mm body, and exposed thermal pad (not electrically connected). Designed for reflow-compatible assembly and automotive board-level reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Analog power supply | Single 2.7V–18V rail powers both amplifier and comparator; decoupling required within 1cm |
| 2 (OUT) | Analog voltage output | High-impedance buffered 100× VSENSE signal; drives 10kΩ loads with <1.5Ω output impedance |
| 3 (CMPIN) | Comparator non-inverting input | Accepts divided OUT voltage to set programmable overcurrent threshold; 0.005–15nA input bias |
| 4 (GND) | Analog ground reference | Common return for VS, OUT, and comparator; must tie to low-impedance system ground plane |
| 5 (RESET) | Comparator reset control | Active-low logic input; floating or grounded enables transparent mode; >1.1V asserts latch |
| 6 (CMPOUT) | Open-drain comparator output | Sinks ≥2.35mA at 300mV VOL; requires external pull-up to VS or higher rail up to 18V |
| 7 (VIN–) | Shunt low-side input | Connects directly to shunt resistor low terminal; supports negative common-mode down to –16V |
| 8 (VIN+) | Shunt high-side input | Connects directly to shunt resistor high terminal; enables high-side sensing in positive-rail systems |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2kV / CDM ±1kV ESD robustness |
| Integrated 0.6V reference comparator | Eliminates external reference IC; enables single-resistor-divider trip-point programming with <1.3μs response |
| Latching comparator mode | Retains fault state after overcurrent event until RESET pin is pulsed low-critical for diagnostic logging in ESC |
| Wide common-mode monitoring | Supports direct connection to 12V/48V battery rails or negative-ground inverters without level-shifting circuitry |
| Stable high-gain accuracy | ≤3.5% total output error over full temp range ensures consistent current measurement across vehicle life cycle |
Applications
| Electric Power Steering (EPS) | Brake Control Module |
|---|---|
Use Scenario: Real-time motor phase current monitoring during assist torque delivery and fault detection. IC Role / Device Role / Timing Role: High-side current sense amplifier feeding MCU ADC and latching comparator triggering fail-safe shutdown. Use Value: 200kHz bandwidth captures rapid motor transients; 100V/V gain resolves 10mV shunt drops with 12-bit ADC resolution. |
Use Scenario: Monitoring solenoid coil current in ABS/ESC actuators to verify valve activation and detect open/short faults. IC Role / Device Role / Timing Role: Low-side shunt monitor with comparator providing immediate hardware-level overcurrent interrupt to safety MCU. Use Value: –16V to +80V common-mode range accommodates solenoid flyback voltages; latch mode holds fault until diagnostic confirmation. |
| Body Control Module (BCM) | Electronic Stability Control (ESC) |
Use Scenario: Load current supervision for smart power distribution (e.g., headlight, HVAC blower) with short-circuit protection. IC Role / Device Role / Timing Role: High-side current monitor with programmable trip point feeding microcontroller for load management and diagnostics. Use Value: 0.6V comparator reference + external divider enables precise trip thresholds independent of supply variation; 1800μA IQ minimizes standby drain. |
Use Scenario: Redundant wheel motor current monitoring in integrated chassis controllers for torque vectoring and stability intervention. IC Role / Device Role / Timing Role: Dual-channel current sensing node (using multiple INA202AQDGKRQ1) feeding ASIL-B safety processor with hardware fault signaling. Use Value: AEC-Q100 qualification and 125°C operation ensure reliability in under-hood ESC housings; VSSOP-8 allows dense placement near motor drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier with comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA203AQDGKRQ1 | Dual comparator version; same 100V/V gain, 200kHz BW, and –16V to +80V CM range | Required when two independent overcurrent channels (e.g., dual-motor ESC) must share one package | Select INA203AQDGKRQ1 only if dual-comparator functionality is needed; otherwise INA202AQDGKRQ1 offers lower cost and smaller layout footprint |
| INA301AIDR | Higher accuracy (0.5% max gain error), 350kHz BW, but limited to 36V max common-mode and no AEC-Q100 qualification | Suitable for non-automotive industrial motor drives where extended voltage range is not required | Choose INA301AIDR for precision lab equipment or consumer robotics; avoid for automotive due to missing AEC-Q100 Grade 1 and 80V capability |
Compared with INA202AQDGKRQ1, INA203AQDGKRQ1 adds channel density at identical performance and qualification, while INA301AIDR trades automotive compliance and voltage range for higher bandwidth and accuracy in non-automotive settings.
Availability
INA202AQDGKRQ1 is available at Aetrix Electronics and suitable for electric power steering, brake control, and body control module designs requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for INA202AQDGKRQ1 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 deep expertise in automotive electronics and functional safety solutions.
The INA20x-Q1 product line is engineered specifically for automotive current sensing in safety-critical systems-including EPS, ESC, and BCM-delivering wide common-mode range, integrated fault detection, and AEC-Q100 Grade 1 reliability.
FAQ
What is the maximum common-mode voltage supported by the INA202AQDGKRQ1?
The INA202AQDGKRQ1 supports a common-mode input voltage range of –16V to +80V. This allows direct connection to high-voltage battery rails (e.g., 48V mild-hybrid systems) and tolerance of negative transients such as load dump or reverse battery conditions. Operation remains specified across the full range at temperatures from –40°C to +125°C.
Does the INA202AQDGKRQ1 require external components to operate its comparator function?
Yes - the INA202AQDGKRQ1 comparator requires an external resistor divider from the OUT pin to CMPIN to set the overcurrent trip threshold relative to the internal 0.6V reference. No external reference or hysteresis components are needed, but a pull-up resistor on CMPOUT (to VS or another rail) is mandatory for open-drain operation.
What is the gain and bandwidth of the INA202AQDGKRQ1, and how do they interact in practice?
The INA202AQDGKRQ1 has a fixed gain of 100V/V and a small-signal bandwidth of 200kHz (CLOAD = 5pF). In practice, this means a 10mV shunt voltage produces a 1V output that settles within 2μs to 1% of final value - sufficient for detecting fast motor current spikes in EPS or ESC systems without aliasing or phase lag.
How does the RESET pin affect comparator behavior in the INA202AQDGKRQ1?
The RESET pin controls latching mode: when held low or floating, the comparator operates transparently (output follows input continuously); when driven high (>1.1V), it enables latching - the CMPOUT remains asserted after an overcurrent event until RESET is pulsed low. This supports diagnostic flagging in automotive safety systems.
Is the INA202AQDGKRQ1 qualified for automotive use, and what does that entail?
Yes - the INA202AQDGKRQ1 is AEC-Q100 qualified as Grade 1 (–40°C to +125°C ambient), with HBM ESD level H2 (±2kV) and CDM level C3B (±1kV). This qualification covers stress testing, reliability validation, and failure analysis per automotive standards, ensuring suitability for under-hood and safety-critical applications like brake and steering control.
INA202AQDGKRQ1 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
INA202AQDGKRQ1 FAQ
1.How can I place an order for INA202AQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA202AQDGKRQ1 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 INA202AQDGKRQ1 reliable?
The price and inventory of INA202AQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA202AQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for INA202AQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA202AQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA202AQDGKRQ1?
INA202AQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA202AQDGKRQ1 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 INA202AQDGKRQ1?
For technical support, including INA202AQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA202AQDGKRQ1 requirements.
6.How does Aetrix verify that INA202AQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All INA202AQDGKRQ1 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 INA202AQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of INA202AQDGKRQ1?
All INA202AQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA202AQDGKRQ1, 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 INA202AQDGKRQ1 part is unused and in its original packaging.
Return procedure for INA202AQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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