Calculation tool
SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
AMC1200-Q1
Automotive, ±250-mV input, precision current sensing basic isolated amplifier
Data sheet
AMC1200-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Temperature Grade 2: –40°C to 105°C
- HBM ESD Classification Level H2
- CDM ESD Classification Level C3B
- ±250-mV Input Voltage Range Optimized for
Shunt Resistors - Very Low Nonlinearity: 0.075% (max)
with 5-V High-Side Supply - Low Offset Error: 1.5 mV (max)
- Low Noise: 3.1 mVRMS (typical)
- Low High-Side Supply Current:
8 mA (max) at 5 V - Input Bandwidth: 60 kHz (min)
- Fixed Gain: 8 (0.5% accuracy)
- High Common-Mode Rejection Ratio:
108 dB (typical) - 3.3-V Operation on Low-Side
- Certified Galvanic Isolation:
- UL1577 and VDE V 0884-10 Approved
- Isolation Voltage: 4250 VPEAK
- Working Voltage: 1200 VPEAK
- Transient Immunity: 10 kV/\xECs (min)
- Typical 10-Year Lifespan at Rated Working
Voltage (see Application Report, SLLA197
The AMC1200-Q1 is a precision isolation amplifier with the output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 4250 VPEAK according to UL1577 and VDE V 0884-10. Used in conjunction with isolated power supplies, this device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.
The input of the AMC1200-Q1 is optimized for direct connection to shunt resistors or other low-voltage level signal sources. The performance of the device supports accurate current control, resulting in systemlevel power saving and (especially in motor-control applications) lower torque ripple. The common-mode voltage of the output signal is automatically adjusted to either the 3-V or 5-V low-side supply.
The AMC1200-Q1 is available in a wide-body, 8-pin SOIC package (DWV) and a gullwing, 8-pin SOP package (DUB).
Technical documentation
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Evaluation board
AMC-AMP-50A-EVM — Evaluation module for ±50A AMCxx amplifier
The AMC-AMP-50A-EVM is an isolated current-sensing evaluation module (EVM) designed for ±50A shunt-based current sensing. This EVM allows users to sense up to ±50A peak current through an external shunt resistor while measuring the isolated output through the isolation barrier of the AMC3302. The (...)
Evaluation board
AMC1200EVM — AMC1200 evaluation module for ±250-mV-input basic isolated amplifier for current sensing
The AMC1200 is an isolated single-channel analog amplifier an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. The AMC1200 is used in high-resolution measurement applications including current monitoring, industrial (...)
User guide: PDF
Calculation tool
SBAR020 — Isolated Amplifier Current Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
Supported products & hardware
Products
Isolated amplifiers
Isolated ADCs
Precision ADCs
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DWV) | 8 | Ultra Librarian |
| SOP (DUB) | 8 | Ultra Librarian |
Ordering & quality
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