Dual Channel, Configurable, IsolatedDigital Input Features: Dual channel, configurable, isolated digital input Programmable trip threshold On-chip debounce filter On-chip data and power Isolation Application circuit monitors wide voltage range 10 V dc to 300 V dc 8 V rms to 240 V rms ac (with 10 ms + pickup) Negative dc protected Programmable wetting current Pulse up to 50 mA Constant current up to 6.3 mA Safety and regulatory approvals UL recognition 3750 V rms for 1 minute per UL 1577 CSA Component Acceptance Notice #5A (pending) CSA 61010-1: 300 V rms VDE certificate of conformity (pending) DIN V VDE V 0884-11 (VDE V 0884-11):2017-1 VIORM = 565 V peak EMC robust solution supports relay protection system level requirements ADC samples available for system diagnostics Internal SAR ADC with PGA Single 3.3 V Supply Integrated isoPower, isolated dc-to-dc converter Interfaces SPI DOUTx output reflects state of digital input IRQ interrupt pin Operating temperature: −40°C to +125°C 20-lead, LGA package with 6.8 mm creepage

High Performance Polyphase Energy Measurement IC Features: 7 high performance analog-to-digital converters (ADCs) 101 dB signal-to-noise ratio (SNR) 10,000:1 dynamic range Wide input range: ±1 V, 0.707 V rms full scale Differential inputs ±25 ppm/°C maximum channel temperature drift (including ADC, internal VREF, and PGA drift) enabling Class 0.2 meters with standard external components Power quality measurements Line frequency: 1 measurement per phase Zero crossing detection, zero-crossing timeout Phase angle measurements Supports current transformers (CTs) and Rogowski coil (di/dt) sensors Multiple range phase/gain compensation for CTs Digital integrator for Rogowski coils Flexible waveform buffer Able to resample waveform to ensure 64 points per line cycle for ease of external harmonic analysis Events can trigger waveform storage Simplifies data collection for IEC 61000-4-7 harmonic analysis Advanced metrology feature set Total active power, volt-amperes reactive (VAR), volt-amperes (VA), watthour, VAR-hour, and VA-hour Fundamental VAR and VAR-hour Current and voltage rms per phase (xIRMS, xVRMS) Supports active energy standards: IEC 62053-21, IEC 62053-22; EN50470-3; OIML R46, ANSI C12.20 Supports reactive energy standards: IEC 62053-23, IEC 62053-4 High speed communication port 10 MHz serial peripheral interface (SPI)

Multichannel ISM Band FSK/GFSK/OOK/GOOK/ASK Transmitter Features: Single-chip, low power UHF transmitter 75 MHz to 1 GHz frequency operation Multichannel operation using fractional-N PLL 2.3 V to 3.6 V operation On-board regulator Programmable output power −16 dBm to +14 dBm, 0.4 dB steps Data rates: dc to 179.2 kbps Low current consumption 868 MHz, 10 dBm, 21 mA 433 MHz, 10 dBm, 17 mA 315 MHz, 0 dBm, 10 mA Programmable low battery voltage indicator 24-lead TSSOP

I2C CMOS 8 10 Unbuffered Analog Switch Array with Dual/Single Supplies Features: I2C-compatible Interface 3.4 MHz High Speed I2C Option 32-lead LFCSP_VQ (5 mm × 5 mm) Double-buffered Input Logic Simultaneous Update of Multiple Switches Up to 300 MHz Bandwidth Fully Specified at Dual ±5 V/single +12 V Operation On Resistance 35 Ω Maximum Low Quiescent Current < 20 μA

User Defined Fault Protection and Detection, 0.8 pC QINJ, 8:1 Multiplexer Features: User defined secondary supplies set overvoltage level Overvoltage protection up to −55 V and +55 V Power-off protection up to −55 V and +55 V Overvoltage detection on source pins Minimum secondary supply level: 4.5 V single-supply Interrupt flags indicate fault status Low charge injection (QINJ): 0.8 pC Low drain/source on capacitance: 19 pF Latch-up immune under any circumstance Known state without digital inputs present VSS to VDD analog signal range ±5 V to ±22 V dual-supply operation 8V to 44 V single-supply operation Fully specified at ±15 V, ±20 V, +12 V, and +36 V 

0.4 CMOS, Dual DPDT Switch in WLCSP/LFCSP/TSSOP Features: 1.8 V to 5.5 V operation Ultralow on resistance 0.4 Ω typical 0.6 Ω maximum at 5 V supply Excellent audio performance, ultralow distortion 0.07 Ω typical 0.14 Ω maximum RON flatness High current carrying capability 400 mA continuous 600 mA peak current at 5 V Automotive temperature range: −40°C to +125°C Rail-to-rail switching operation Typical power consumption (<0.1 μW)

0 Hz/dc to 14 GHz, Single-Pole, Four-Throw MEMS Switch with Integrated Driver Features: Fully operational down to 0 Hz/dc On resistance: 2.9 Ω (maximum) Off leakage: 0.5 nA (maximum) −3 dB bandwidth 11 GHz (typical) for RF1, RF4 14 GHz (typical) for RF2, RF3 RF performance characteristics Insertion loss: 0.26 dB (typical) at 2.5 GHz Isolation: 24 dB (typical) at 2.5 GHz IIP3: 69 dBm (typical) RF power: 36 dBm (maximum) Actuation lifetime: 1 billion cycles (minimum) Hermetically sealed switch contacts On switching time: 75 μs (maximum) Integrated driver removes the need for an external driver Supply voltage: 3.0 V to 3.6 V CMOS-/LVTTL-compatible Parallel and SPI interface Independently controllable switches Switch is in an open state with no power supply present Requirement to avoid floating nodes on all RFx pins (see the Floating Node section in data sheet) 24-lead, 5 mm × 4 mm × 0.95 mm, LFCSP Operating temperature range: 0°C to 85°C

SPI Interface, 1.5 RON, 15 V/+12 V, Quad SPST Switch, Mux Configurable Features: SPI interface with error detection Includes CRC, invalid read/write address, and SCLK count error detection Supports burst mode and daisy-chain mode Industry-standard SPI Mode 0 and Mode 3 interface compatible Guaranteed break-before-make switching allowing external wiring of switches to deliver multiplexer configurations 1.5 typical on resistance at 25°C 0.3 typical on resistance flatness at 25°C 0.1 typical on resistance match between channels at 25°C VSS to VDD analog signal range Fully specified at ±15 V, ±5 V, and +12 V 1.8 V logic compatibility with 2.7 V ≤ VL ≤ 3.3 V 24-lead LFCSP

24 V to 220 V Precision Operational Amplifier Features: Wide range of operating voltages Dual-supply: ±12 V to ±110 V Asymmetrical supply operation: 24 V to 220 V Wide input common-mode voltage range: 3 V from rails High common-mode rejection ratio: 160 dB typical High AOL: 170 dB typical High slew rate 74 V/μs typical 24 V/μs typical with external input clamping diodes Low input bias current: 2 pA maximum Low input offset voltage: 1 mV maximum Low input offset voltage drift: 2 μV/°C maximum Low input voltage noise: 8 nV/√Hz typical at 10 kHz Wide small signal bandwidth: 10 MHz typical Resistor adjustable quiescent current: 0.6 mA to 3 mA (VS = ±110 V) Unity-gain stable Thermal monitoring Small footprint: 12-lead, 7 mm × 7 mm LFCSP compliant with IEC 61010-1 spacing Shutdown mode

Quad Voltage Monitor and Sequencer Features: Powered from 2.7 V to 5.5 V on the VCC pin Logical core with internal timeouts provides power supply sequencing and fault protection 4 inputs can be programmed to monitor different voltage levels with resistor dividers Monitors 4 supplies via 0.8% accurate comparators 3 open-drain enable outputs Open-drain power-good output (PWRGD) 10-lead MSOP