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CS5460A-BSZ

Single-phase power/energy IC, ±0.1% accuracy, 2ch ΔΣ ADC, auto-boot, SSOP-24

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Manufacturer Part：

CS5460A-BSZ

Package：

SSOP-24 (7.5 x 5.3 x 1.65mm, 208mil)

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Description

Product Overview

The CS5460A-BSZ from Cirrus Logic is a single-phase bi-directional power/energy IC in an SSOP-24 package. It combines two delta-sigma ADCs with high-speed power calculation and a serial interface, measuring real energy, instantaneous power, IRMS, and VRMS with ±0.1% linearity over 1000:1 dynamic range, meeting IEC 687/1036 accuracy requirements.

Key Specifications

Measurement Accuracy ±0.1% of reading over 1000:1
Channels 2 (Voltage + Current)
ADC Resolution Delta-Sigma, 24-bit
Interface SPI-compatible 3-wire serial
Analog Supply (VA+) +5V (4.75V to 5.25V)
Digital Supply (VD+) +3.3V to +5V
Power Consumption <12mW typ.
Supply Current (Active) 2.9mA (VA+) + 1.7mA (VD+)
Internal Reference 2.5V (60 ppm/°C max drift)
Clock Frequency 4.096MHz typ.
Package SSOP-24 (5.3mm width)
Operating Temperature -40°C to +85°C

Features

  • Energy data linearity: ±0.1% over 1000:1 dynamic range
  • On-chip: Real Energy, I×V, IRMS, VRMS calculation
  • Energy-to-pulse conversion output
  • Smart auto-boot mode from serial EEPROM (no MCU needed)
  • AC or DC system calibration
  • Mechanical counter / stepper motor driver
  • Meets IEC 687/1036 and JIS accuracy specs
  • V vs. I phase compensation
  • Ground-referenced signals with single supply
  • Watchdog timer and power supply monitor

Applications

  • Single-phase electricity meters
  • Smart metering and energy monitoring
  • Industrial power measurement
  • Renewable energy monitoring systems
  • Server and data center power monitoring

The CS5460A-BSZ from Cirrus Logic is a highly integrated single-phase power measurement IC combining two delta-sigma ADCs, high-speed power calculation functions, and a serial interface on a single chip. It accurately measures and calculates real (true) energy, instantaneous power, IRMS, and VRMS for 2-wire or 3-wire power metering applications. With ±0.1% energy data linearity over a 1000:1 dynamic range, it meets IEC 687/1036 and JIS accuracy specifications. The auto-boot feature allows standalone operation by reading calibration data from an external EEPROM, eliminating the need for a microcontroller.

The CS5460A uses two 24-bit delta-sigma ADCs to simultaneously sample the voltage and current channels. The current channel has a programmable gain amplifier (x10 or x50) optimized for shunt resistor sensing, while the voltage channel is designed for resistive divider inputs. The digitized samples pass through high-rate digital low-pass filters and optional high-pass filters for offset removal. The power calculation engine multiplies the instantaneous voltage and current samples to compute real power, accumulates energy over time, and calculates IRMS and VRMS values. The energy-to-pulse converter generates output pulses proportional to real power, suitable for driving stepper motors or mechanical counters.

Pin Name Type Function
1 SDO Output Serial data output
2 SDI Input Serial data input
3 SCLK Input Serial clock input
4 CS Input Chip select (active low)
5 MODE Input Mode select (auto-boot vs host)
6 VA+ Power Analog positive supply (+5V)
7 AGND Power Analog ground
8 VREFIN/OUT I/O Voltage reference in/out (2.5V)
9-10 VIN+/VIN- Input Voltage channel differential input
11-12 IIN+/IIN- Input Current channel differential input
13 PFMON Input Power-fail monitor input
14 RESET Input Active-low reset
15 INT Output Interrupt output (active low)
16 EOUT Output Energy pulse output
17 EDIR Output Energy direction output
18 VD+ Power Digital positive supply
19 DGND Power Digital ground
  • Single-phase residential and commercial electricity meters
  • Smart metering with auto-boot standalone operation
  • Industrial power monitoring and sub-metering
  • Solar and wind energy generation monitoring
  • Server rack and data center power measurement
Manufacturer Part Number Package Notes
Cirrus Logic CS5460A-ISZ SSOP-24 Industrial temp version
TI MSP430AFE253IPW TSSOP-28 3-phase metrology MCU
Microchip MCP3903-I/SS SSOP-28 6-channel 24-bit ADC for energy
ADI ADE7753ARS SSOP-20 Single-phase energy metering IC
Renesas RL78/I1B LQFP-64 Metrology MCU with LCD driver
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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