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Multi-channel micro-volt absolute accuracy readout ASIC for thermocouples and oxygen sensors
The ASIC is a fully integrated, high performance (16 bit) sensor Analog Front End (AFE) for high absolute accuracy measurements targeted for remote sensor applications in harsh environments. It is ideally suited for thermocouple and electrochemical gas sensor measurements. An accurate internal temperature sensor is present to enable temperature dependent digital post processing of offset and gain errors.
Long distance autonomous communication in remote and harsh environments up to 100m
No external reference voltage required: Absolute on-chip reference voltage accuracy: 0.19%
Selectable input range: -18.5mV to +18.5mV (type I), -750mV to 400mV (type II)
Absolute accuracy: 15uV (type I) to 2.5mV (type II)
Resolution: 0.78uV (type I) to 37.1uV (type II)
16-bit Sigma-Delta ADC
Sample rate: 100Hz/channel
Differential inputs: 4 channels
Internal temperature sensor resolution: 0.09°C
Communication: 2-wire (I-mode over supply lines) or 3-wire (supply and data line)
User-programmable 64-bit OTP (ID number)
Accurate burn-out function (open wire detection):
Programmable 50nA to 5uA
Error-free detection via GP pin
Sensor cross-talk insensitivity by time-multiplexed separate sensor bias
Sensor negative voltage bias by on-chip reference
SPI interface
Operating range: -20 to +80°C
2kV HBM ESD
Low cost QFN24 (5x5mm)
0.35um CMOS
Why choose ICsense for your next industrial ASIC development ?
ICsense is a recognised partner in IEC61508 compliant ASIC development and supply for industrial markets. Since 2004, the mixed-signal ASICs of ICsense are used in industrial automation, sensor interfaces, power management and communication. Through its systematic and certified development process, ICsense can ensure the quality, safety and long-term reliability for industrial ASICs.
Our values:
Over +20 years of expertise in industrial ASIC development
Exclusive development and supply. IP owned by the customer
