AFE (Analog-Front-End) for MEMS/sensors/transceivers
- Resistive sensor interfaces: Wheatstone bridge readout
- Capacitive sensor interfaces: tilt, accelerometer, pressure sensors, C-to-V interfaces with aF sensitivity
- Magnetic sensor interfaces: Hall sensors, GMR (giant magneto resistance) sensor interface
- Inductive proximity sensor architectures
- Absolute accuracy of uVrms: block and system-level chopping, low noise, low temperature sensitivity
- Offset compensation (CDS, Chopping, …), kT/C noise cancellation
- High accuracy, fully integrated temperature sensors
- Delta-Sigma (ΔΣ) analog-to-digital (AD) converters: continuous and discrete time
- Successive approximation AD converters
Custom ADC and DAC developments
- Delta-sigma (LP, BP), (SC, CT, extended counting)
- Cyclic, Algorithmic and SAR ADC
- Pipelined ADC
- Current steering DAC
- Delta-Sigma DAC
Examples
- 7uV absolute acc. thermocouple/oxygen sensor IC
- ADC 13b/5kSps, 8uA, ext. counting DS, 0.18um
- ADC 13b/1 MSps, 300kRad, cyclic , 0.18um
- ADC 11b/2.5 MSps IQ BP multi-bit DS, 90nm (123 fJ/conv)
- ADC 17b/10 MSps hybrid pipelined, DS, 40nm
- 11b, 30 MSps pipelined, 40nm ADC
- 12b, 200kSps SAR 0.65um, ADC