AMC3302-Q1 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
AMC3302-Q1 is an automotive-grade reinforced isolated amplifier from Texas Instruments with ±250 mV input range, 12-bit resolution, and up to 8 kVrms isolation in a small outline package. It provides galvanically isolated current-shunt measurement for motor drives and battery management systems. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- AMC3302-Q1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Reinforced isolation up to 8 kVrms peak enables safe galvanic separation between high-voltage motor drives and low-voltage MCU circuits
- ±250 mV differential input range optimized for direct connection to low-value current-shunt resistors without external scaling
- 12-bit resolution and low offset drift deliver precise current measurement in AEC-Q100 qualified automotive traction and BMS designs
- Integrated modulator and analog front-end reduce external component count for isolated current sensing in SOIC-8 package
Applications
AMC3302-Q1 is designed for isolated current sensing in automotive traction inverters, on-board chargers, and battery management systems where the high-voltage battery rail must be galvanically separated from the control electronics. Its ±250 mV input range and AEC-Q100 qualification make it ideal for shunt-based phase current measurement in 3-phase motor drives operating up to 800 V DC bus. Industrial servo drives and solar inverters requiring reinforced isolation also benefit from its integrated isolation barrier and precise 12-bit measurement capability.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for AMC3302-Q1:
Isolation Amplifier, 1 Func, 1200V Isolation-Min, 0.34MHz Band Width, PDSO16
Frequently Asked Questions
What isolation voltage and input range does AMC3302-Q1 provide for current sensing?
AMC3302-Q1 offers reinforced isolation rated up to 8 kVrms peak, with a differential input range of ±250 mV for direct shunt-resistor connection. This combination allows it to safely measure currents on 400 V or 800 V automotive battery bus rails while protecting the low-voltage MCU side from dangerous high-voltage transients common in traction and inverter applications.
Is AMC3302-Q1 qualified for automotive traction and EV battery management applications?
Yes, AMC3302-Q1 is AEC-Q100 automotive qualified, confirming suitability for harsh automotive environments including electric vehicle traction inverters and battery management systems (BMS). It is rated for the full automotive temperature range of −40°C to +125°C and undergoes stringent reliability testing to meet the quality standards required for safety-critical vehicle powertrain electronics.
How does the ±250 mV input range of AMC3302-Q1 simplify shunt-based current measurement design?
The ±250 mV differential input range is specifically matched to low-value shunt resistors typically used in high-current paths, such as a 0.5 mΩ shunt in a 500 A motor drive that produces exactly 250 mV at full scale. This eliminates the need for an external attenuator or level-shifting circuit between the shunt and the AMC3302-Q1, reducing component count, improving noise immunity, and lowering the overall cost of the isolated current sense circuit.
How does AMC3302-Q1 compare to a current transformer for phase current sensing in a motor drive?
AMC3302-Q1 using a shunt resistor measures DC and AC currents with 12-bit resolution over a flat frequency response from DC to several hundred kHz, whereas a current transformer (CT) is inherently AC-coupled and cannot measure DC bias or low-frequency currents below its saturation frequency — typically above 50 Hz. For variable-speed motor drives operating at switching frequencies of 10–20 kHz, the AMC3302-Q1 shunt approach gives more accurate torque control and eliminates the bulky ferrite core, reducing weight and cost.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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