U/I QPump Monitoring

Purpose

Monitors the global Bias voltage and Bias current.

Two 10 bit channels of the uC internal ADCs provide readback of the charge pump voltage and current.

Charge Pump Voltage monitoring schematic

Table of values associated with the Voltage QPump measurements

R1/%         R2/%       #of bits       VREF    1/Gain   ADCgain    V/DAC
1M/0.1%   10K/0.1%     10 bits(1024)  2.43V     101       2        0.1198

Charge Pump Current monitoring schematic

Table of values associated with the currrent QPump measurements

Isource    R1    A/V    #of bits          VREF       A/DAC
IBias     100R    1.    10 bits (1024)    2.43V     0.00002373