CA-IS1305
High-speed 16-bit isolated ADC optimized for current sensing with 5kVrms isolation and 100kSPS sample rate for motor...
Product Overview
Description
CA-IS1305 is a high-speed isolated ADC specifically designed for current sensing applications in motor drives and power converters. The device features 16-bit resolution with 5kVrms reinforced isolation.
With a sample rate up to 100kSPS and low latency, this ADC enables real-time current feedback for high-performance motor control and power factor correction.
The integrated shunt amplifier and precision reference simplify current measurement design while maintaining high accuracy over temperature.
Product Series
CA
Primary Application
Motor current sensing
Key Features
- 16-bit resolution with high speed
- 5kVrms reinforced isolation
- 100kSPS sample rate
- Integrated shunt amplifier
- Programmable gain 10x-100x
- 50kHz signal bandwidth
- Low latency <10μs
- SPI digital interface
Specifications
| Resolution | 16-bit |
|---|---|
| Sample Rate | Up to 100kSPS |
| Isolation Voltage | 5kVrms (reinforced) |
| Input Channels | 1 (differential) |
| Input Range | ±50mV to ±500mV |
| Gain | 10x to 100x programmable |
| Bandwidth | 50kHz |
| Package | SOIC-16 |
Applications
Motor current sensing
Motor drive and control systems
Power converter monitoring
Power conversion and supply
PFC current feedback
Electronic system design
Inverter control
Industrial automation and control
Battery current monitoring
Battery and charging management
Solar inverter control
Industrial automation and control
UPS systems
Electronic system design
FAE Expert Insights
"CA-IS1305 is purpose-built for current sensing in motor drives. The high sample rate and low latency are critical for fast current control loops. The integrated shunt amplifier eliminates external components. I've used this ADC in servo motor drives where the 100kSPS rate provides excellent current loop bandwidth. The 5kVrms isolation safely separates high-voltage power stages from control electronics."
100kSPS sample rate optimized for current sensing
— Dr. Chen Wei, BeiLuo
Frequently Asked Questions
What shunt resistor value should I use with CA-IS1305?
Shunt resistor selection depends on current range and power dissipation. For motor applications: 10-50mΩ for high currents (10-100A); 100-500mΩ for medium currents (1-10A). The CA-IS1305's programmable gain (10x-100x) accommodates various shunt values. Calculate: Rshunt = Vmax / (Gain × Imax). For example, with 10mV max input at 10x gain for 50A: Rshunt = 10mV / (10 × 50A) = 20mΩ.
Select shunt based on current range and power budget. Contact our FAE team for shunt selection.