Index of current/voltage/power sensing: low/high-side shunt, bidirectional & zero-drift amps, fast protection sensing, digital monitors, VR DCR, isolated ΣΔ/amps and magnetic sensors; voltage sensing, power/energy metering, interfaces/isolation, application-focused sensing, and design hooks.
Current Sensing
Low-Side Shunt Current Sense Amp
mV-level sensing with low offset/drift and simple ground reference for small-power, non-critical ground-bounce cases.
High-Side Shunt Current Sense Amp
Wide common-mode up to 80–100 V+ with high CMRR; monitors open-load/short-to-rail faults.
Bidirectional Current Sense (with Ref)
Built-in reference sets midscale for ± current measurement; ideal for charge/discharge and regenerative paths.
Zero-Drift / Chopper Current Sense
µV-level offset and very low drift for metering and long-term stability.
Fast Current Sense for Protection
MHz bandwidth with µs–ms response for OCP/eFuse coordination.
Digital Current Monitor (I²C/SPI)
On-chip ADC with thresholds/alerts, averaging and accumulation to simplify host reads.
Inductor DCR Sensing for VR
Extract inductor DCR via RC networks with thermal tracking for multiphase VR current balance.
Isolated Current Sense (ΣΔ / Amplifier)
Isolated ΣΔ or diff-amp solutions with high CMTI for high-side/HV bus sensing.
Hall / MR / TMR Current Sensor IC
Low insertion loss with inherent isolation; DC/AC capable with saturation handling and temp compensation.
Fluxgate / Closed-Loop Current Transducer
High accuracy and low drift for metering and precise drive-loop control.
On-Chip TIA for Sense Resistor
Low-noise TIA with programmable gain for small-current or mixed sensing–power chains.
Voltage Sensing
Differential / Instrumentation Voltage Sense
High CMRR with Kelvin sense for long backplanes and drop compensation.
High-Voltage Divider + Buffer
Up to ~600 V dividers with buffering, input protection and linear-range assurance.
Remote Sense / Cable Drop Compensation
Differential remote sense with cable-drop feed-forward working with the regulator loop.
Low-Power Voltage Monitor ADC
Multi-channel MUX with alert thresholds and last-gasp snapshots.
Power & Energy Measurement
Power Monitor (V·I·P)
Measure V/I/P simultaneously, accumulate energy, track peaks/averages with I²C/PMBus outputs.
AC Energy Metering SoC
24-bit ΣΔ with harmonics/PF, 50/60 Hz sync; works with CT/shunt/Rogowski sensors.
DC Power Meter for Server/Telecom
Wide-range VI sensing with transient/ripple stats and black-box events.
Multiphase / Multichannel Power Monitor
Pairs with interleaved VRs for phase current balance, thermal distribution and power limiting.
Interfaces & Isolation
Isolated ADC / ΔΣ Modulator
Direct shunt/voltage sampling with clock/jitter care; isolated digital bitstreams.
Isolated Differential Amplifier
High CMTI and linearity for inverter and motor phase-current sensing.
Daisy-Chain Measurement Link
SPI/isoSPI daisy-chains with sync timing and cable/ground noise rejection.
Application-Focused Sensing
Battery Pack Current Monitor
Bidirectional/low-drift with sleep/wake; coordinates with fuel gauge and protector.
USB-C / PD Port Power Monitor
VBUS/IBUS sampling with PPS tracking and backfeed/short event capture.
PoE PSE/PD Power Sense
Classification/grading, power allocation and per-port energy/alerts.
Motor Phase Current Sensing
Low latency, symmetric bandwidth and PWM common-mode rejection.
PV & Storage Metering
MPPT-related metrics, bidirectional power and islanding/grid-event detection.
High-Side Micro-Current Sense
µA-level resolution with wide common-mode for leakage/standby monitoring.
Design Hooks
Shunt Selection
Value/power/TCR & pulse rating; 4-terminal Kelvin layout with minimal parasitic inductance.
Front-End Protection
OV/ESD/surge clamps, input limit resistors and RC filters with bandwidth/phase trade-offs.
Input Filtering & Stability
RC input + op-amp stability; coordinate with ΣΔ/ADC sampling to avoid aliasing.
Offset/Drift & Calibration
Two/multi-point calibration with temp-comp LUT and online zero-tracking.
Bandwidth & Response
Set by load/protection needs; trade fast protection versus low-noise metering.
Common-Mode & Grounding
High-CMRR layout, star/Kelvin returns and long-trace loop-inductance control.
Sync & Timestamp
Multi-channel sync sampling, 1588/PTP/trigger alignment and event traceability.
Safety & Isolation
CMTI, creepage/clearance and blocking fault propagation into control loops.
Data Path & Alerts
Averages/peaks/energy, threshold interrupts, black-box logging and last-gasp writes.
