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INA203AIDGSR
Texas Instruments
IC CURRENT MONITOR 3.5% 10VSSOP
3532 Pcs New Original In Stock
Current Monitor Regulator High-Side 1mA 10-VSSOP
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5.0 / 5.0
- (244 Ratings)
INA203AIDGSR
Product Overview
1305726
DiGi Electronics Part Number
INA203AIDGSR-DGManufacturer
Texas Instruments
INA203AIDGSR
Description
IC CURRENT MONITOR 3.5% 10VSSOPInventory
3532 Pcs New Original In Stock
Current Monitor Regulator High-Side 1mA 10-VSSOP
Quantity
Minimum 1
Minimum 1
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INA203AIDGSR Technical Specifications
Category
Power Management (PMIC), Current Regulation/Management
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Function
Current Monitor
Sensing Method
High-Side
Accuracy
±3.5%
Voltage - Input
-16V ~ 80V
Current - Output
1mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package
10-VSSOP
Base Product Number
INA203
Datasheet & Documents
Manufacturer Product Page
INA203AIDGSR Specifications
HTML Datasheet
INA203AIDGSR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-296-21700-1-DG
-INA203AIDGSRG4-NDR
-296-21700-1-NDR
296-21700-1
296-21700-2
296-21700-2-NDR
2156-INA203AIDGSR
INA203AIDGSRG4-DG
-296-21700-1
-INA203AIDGSRG4
296-21700-1-NDR
296-21700-6-NDR
INA203AIDGSRG4
TEXTISINA203AIDGSR
-INA203AIDGSR-NDR
296-21700-6
Standard Package
2,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Bei DiGi Electronics fühlt man sich nach dem Kauf gut betreut, der Support ist sehr freundlich und hilfsbereit.
de desembre 02, 2025
Customer service from DiGi Electronics is outstanding and always helpful.
de desembre 02, 2025
Their electronics have exceeded my expectations in durability and reliability.
de desembre 02, 2025
Shopping with DiGi Electronics feels secure due to their consistent product performance.
de desembre 02, 2025
Having reliable inventory levels has made DiGi Electronics our go-to partner for ongoing needs.
de desembre 02, 2025
After-sales service from DiGi Electronics truly exceeds expectations.
de desembre 02, 2025
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Frequently Asked Questions (FAQ)
What are the key design risks when using the INA203AIDGSR in high-voltage industrial applications above 60V, and how can I mitigate them?
When deploying the INA203AIDGSR in high-voltage environments above 60V, the primary risk is exceeding its absolute maximum input voltage of 80V during transient events like load dumps or inductive spikes. Even brief overvoltage conditions can damage the device. To mitigate this, always include a transient voltage suppressor (TVS) diode rated below 80V (e.g., SMAJ78A) on the high-side input, and ensure your system-level protection accounts for worst-case surges. Additionally, verify that your PCB layout minimizes parasitic inductance on the sense lines to avoid ringing. The INA203AIDGSR’s ±3.5% accuracy is only valid within the specified -16V to 80V range, so operating near the upper limit without protection compromises both reliability and measurement integrity.
Can I replace the INA203AIDGSR with a MAX4080FASA+ in a 48V battery monitoring system without redesigning the feedback network?
Direct replacement of the INA203AIDGSR with the MAX4080FASA+ is not recommended without circuit modifications. While both are high-side current monitors, the INA203AIDGSR provides a fixed 1mA output current proportional to the sensed voltage, whereas the MAX4080FASA+ outputs a voltage signal via an internal transimpedance stage. This fundamental difference in output type means the downstream ADC or microcontroller interface must be redesigned. Additionally, the MAX4080FASA+ has a lower common-mode voltage range (up to 76V vs. 80V for the INA203AIDGSR) and different accuracy characteristics. If you're constrained by board space or supply chain issues, consider the INA240A2IDGSR as a closer functional alternative with voltage output and similar package compatibility.
How does the INA203AIDGSR behave under fast transient load changes, and what layout practices are critical to avoid false readings?
The INA203AIDGSR is sensitive to high di/dt events due to its high-side sensing architecture and internal signal conditioning. Rapid load transients can induce ground bounce or coupling noise into the sense traces, leading to inaccurate 1mA output current. To ensure stable operation, maintain a Kelvin connection for the shunt resistor, keep sense traces short and symmetrical, and place a 100nF ceramic capacitor as close as possible to the supply pin (V+) and ground. Avoid routing high-current return paths beneath the device or sense lines. The INA203AIDGSR lacks built-in filtering, so external RC filtering on the output may be necessary in noisy environments—though this will limit response time, creating a trade-off between noise immunity and dynamic performance.
Is the INA203AIDGSR suitable for automotive 12V systems requiring AEC-Q100 qualification, and what are the reliability implications if used outside that standard?
The INA203AIDGSR is not AEC-Q100 qualified, despite operating over the automotive temperature range (-40°C to 125°C). Using it in safety-critical or under-hood automotive applications introduces reliability risks, including potential long-term drift, reduced lifetime under thermal cycling, and lack of documented failure rate data per automotive standards. While it may function in non-critical 12V systems (e.g., interior lighting control), TI does not guarantee performance consistency across batches under harsh automotive conditions. For compliance and reliability, consider the INA240-Q1 or INA180-Q1, which are AEC-Q100 Grade 1 certified and offer similar functionality. If you proceed with the INA203AIDGSR, implement rigorous in-system calibration and environmental testing to validate long-term stability.
What happens if the shunt resistor value for the INA203AIDGSR is chosen too large, and how do I balance power dissipation with measurement accuracy?
Selecting a shunt resistor that is too large for the INA203AIDGSR increases power dissipation (P = I²R), which can lead to thermal drift, reduced efficiency, and potential thermal shutdown in high-current applications. The device’s 1mA full-scale output current corresponds to a maximum differential voltage of approximately 50mV (based on internal gain), so exceeding this limits the measurable current range. For example, a 0.1Ω shunt at 5A generates 50mV—ideal—but at 10A, it would exceed the input range and saturate the output. To balance accuracy and thermal performance, use the smallest shunt that provides sufficient signal above system noise (typically ≥10mV). Calculate worst-case power dissipation and ensure the shunt’s power rating includes derating for ambient temperature. Always validate thermal performance in your actual PCB layout, as copper area significantly affects heat dissipation.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
INA203AIDGSR CAD Models
Texas Instruments INA203AIDGSR PCB symbols & footprints
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