|Dimensions||1000μm x 1175μm|
|Power||6 mw @1.2V 25C|
The IC realizes a Bluetooth Low Energy Transmitter with GMSK-Modulator, DPLL and TX output driver. The DPLL is a fractional low-power PLL with integrated 2-point modulation. It uses a Class C DCO, an analog, differential ramp based phase detector and a digital loop filter. Two different TX output drivers have been implemented: a switched-capacitor based PA and a version with a bootstrapped switch which uses an input voltage that is generated from a buck DCDC-converter.
The PLL consumes only 700 microWatt, and the whole chip 6mW when transmitting at 4dBm output power.
This is a re-run of the earlier Chronos chip with some corrections.