Calculation tool
AMC1300B-Q1
Automotive, ±250-mV input, precision current sensing reinforced isolated amplifier
Data sheet
AMC1300B-Q1
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to 125°C, TA
- Functional Safety-Capable
- ±250-mV input voltage range optimized for current measurements using shunt resistors
- Fixed gain: 8.2 V/V
- Low DC errors:
- Offset error: ±0.2 mV (max)
- Offset drift: ±0.9 µV/°C (max)
- Gain error: ±0.3% (max)
- Gain drift: ±30 ppm/°C (max)
- Nonlinearity: 0.03% (max)
- 3.3-V or 5-V operation on high-side and low-side
- Fail-safe output
- High CMTI: 100 kV/µs (min)
- Low EMI, meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- 7071-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL1577
The AMC1300B-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up to 1.5 kVRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from hazardous voltages and damage.
The input of the AMC1300B-Q1 is optimized for direct connection to a low-impedance shunt resistor or other low-impedance voltage source with low signal levels. The excellent DC accuracy and low temperature drift supports accurate current control in PFC stages, DC/DC converters, traction inverters, and OBCs over the full automotive temperature range from –40°C to +125°C.
The integrated missing-shunt and missing high-side supply detection features simplify system-level design and diagnostics.
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Technical documentation
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Evaluation board
AMC1300EVM — AMC1300 ±250-mV input, reinforced isolated amplifier with high CMTI evaluation module
The AMC1300 evaluation module (EVM) is a platform for evaluating the AMC1300, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1300EVM allows the user to explore all the features of the AMC1300.
User guide: PDF
Simulation model
AMC13xx TINA-TI SPICE Model for Isolated Voltage-Measurement Circuit
SBAM448.TSC (43 KB) - TINA-TI Spice Model
Calculation tool
SBAR020 — Isolated Amplifier Current Sensing Excel Calculator
Supported products & hardware
Products
Isolated amplifiers
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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