AMC1203BDUBG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
AMC1203BDUBG4 is a 16-bit isolated delta-sigma analog-to-digital converter with differential serial output by Texas Instruments in an 8-pin SOP package. Key specs: 16-bit resolution, differential input, isolated serial interface, designed for current and voltage shunt measurement in motor drives and power inverters. From $4.50, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- AMC1203BDUBG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of AMC1203BDUBG4?
- 16-bit resolution isolated delta-sigma ADC with reinforced isolation barrier enables high-accuracy current shunt measurements in motor drives and inverters without galvanic connection
- Differential input architecture rejects common-mode noise up to several hundred volts, critical for accurate measurements on high-voltage inverter shunt resistors
- Serial interface with isolated data output directly connects to microcontrollers and DSPs, eliminating optocouplers and reducing component count in isolated measurement designs
What is AMC1203BDUBG4 used for?
AMC1203BDUBG4 is used in 3-phase motor drives, solar inverters, and industrial power converters to measure phase current through shunt resistors on the high-voltage side while maintaining galvanic isolation from the control circuitry. It is also suited for energy metering, grid-tied inverters, and UPS systems requiring 16-bit accurate current sensing across isolation barriers above 1 kV.
What are the specifications of AMC1203BDUBG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | ANALOG CIRCUIT |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | GWDIP8,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 12mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| HTS Code | 8542.39.00.01 |
Where can I find the AMC1203BDUBG4 datasheet?
AMC1203BDUBG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for AMC1203BDUBG4?
Compatible alternatives and drop-in replacements for AMC1203BDUBG4:
Frequently Asked Questions
How does AMC1203BDUBG4's isolation barrier protect the control MCU in a high-voltage motor drive?
AMC1203BDUBG4 incorporates a reinforced isolation barrier that can withstand voltages above 1 kV, physically separating the high-voltage shunt measurement side from the low-voltage serial output connected to the MCU. This isolation prevents destructive voltage surges from propagating to the 3.3 V or 5 V MCU logic domain during switching transients in 400 V to 800 V inverter stages.
What resolution does AMC1203BDUBG4 provide, and how does it compare to a 12-bit ADC in motor current sensing accuracy?
AMC1203BDUBG4 delivers 16-bit resolution, providing 65536 discrete codes versus 4096 for a 12-bit ADC, a 16× improvement in resolution. For a 50 A full-scale current range, 16-bit resolution resolves 0.76 mA per LSB compared to 12.2 mA per LSB at 12 bits, enabling more precise torque control and efficiency optimization in PMSM motor drives.
In a 3-phase inverter design, how does the differential input of AMC1203BDUBG4 reject PWM-induced common-mode noise?
The differential input of AMC1203BDUBG4 measures only the voltage difference across the shunt resistor, rejecting common-mode signals that appear equally on both input pins. High-frequency PWM switching in 3-phase inverters at 16 kHz to 100 kHz induces common-mode transients of several volts on the shunt, but the AMC1203BDUBG4 common-mode rejection suppresses these by over 80 dB, maintaining 16-bit measurement accuracy.
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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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