AnSem developed for Cochlear a highly efficient 24V power management system that generates all internal low and high voltage supplies required in the cochlear implant to perform the high voltage nerve stimulation.The heart of this system is a single inductor multiple output (SIMO) switched inductor regulator. The implementation combines a compact design, requiring a minimum of external components, with advanced switch mode power supplies, LDOs and safety functions.
AnSem developed for this customer a radio frequency front-end chip containing zero IF, quadrature RX path including wideband LNA and TX path including wideband PA. The device supports a broad, fully programmable RF frequency range between 700MHz and 4GHz, encompassing all licensed commercial spectrum around the globe. A VCO had to be designed with a wide tuning range of 3GHz to 6GHz while complying with tight phase noise characteristics.
AnSem developed an ASIC for Sensimed to mount directly within the contact lens. The ASIC digitizes the MEMS sensor reading and transmits the measurements back to the recorder via the same RF link used to power the device using load modulation techniques.
Argos is a satellite based communication system that can track the route of a fishing vessel, large migrations of birds and other animals, or can monitor environmental sensor data (atmospheric pressure, sea temperature, animal heart rates) from animals or devices equipped with an Argos tag. These tags are lightweight RF radio systems equipped with multiple sensors (e.g. depth, temperature and light) and they will be mounted on wildlife as to register the trail of the migrating animals. This pattern combined with the sensor's logged measurements will allow scientists to investigate what drives the migration of these animals. What makes Argos unique is the ability to locate the animal anywhere on Earth utilizing the Doppler effect.
To meet this market demand, AnSem developed an ultra low-power RF ISM FSK transceiver in 0.25µm CMOS with a operational voltage range 0.9 V to 1.6 V and a power consumption of 2.6mW for transmission / 1.2mW for reception.
AnSem developed an ultra low-power RF ISM transmitter in 0.25µm CMOS with an active power consumption of 2.6mW - 10 times lower than any other product available today. The transmitter's low operating voltage - as low as 0.9V - and wide supply voltage range makes it possible to power it from a single alkaline battery.
AnSem designed an ASIC containing all the supporting circuitry for the MEMS. On this ASIC, the MEMS array is postprocessed after regular CMOS silicon processing. Each MEMS is programmed by a control voltage with a range between -15V and +15V relative to the silicon substrate.
The customer's ASIC was based on the standard TSMC 0.13µm CMOS. AnSem was asked to design the dedicated pipelined 10bit @ 100MSps ADC core because we had consistently exceeded the customer's expectations in previous projects. To optimize area and power AnSem used a 1.2V power supply and carefully scaled the different pipeline stages.
ECSI came to AnSem for the design of an AFE that met the Xi-Channel® system requirements. A two die solution was devised with the PA and line interface designed in high voltage 0.18µm BCD CMOS and the remaining circuitry in 0.18µm CMOS to take advantage of the higher frequency transistors and lower power of this technology.