Datasheet

ADAU1761
Rev. C | Page 9 of 92
TYPICAL POWER MANAGEMENT MEASUREMENTS
Master clock = 12.288 MHz, integer PLL, input sample rate = 48 kHz, input tone = 1 kHz. Pseudo-differential input to ADCs, DACs to
line output with 10 k load. ADC input @ −1 dBFS, DAC input @ 0 dBFS. In Table 4 , the mixer boost and power management conditions
are set for MXBIAS[1:0], ADCBIAS[1:0], HPBIAS[1:0], and DACBIAS[1:0]. RBIAS[1:0] and PBIAS[1:0] do not have an extreme power
saving mode and are therefore set for power saving mode in the extreme power saving rows in Table 4.
Table 4.
Operating Voltage
Power Management
Setting
Mixer Boost
Setting
Typical
AVDD Current
Consumption (mA)
Typical ADC
THD + N (dB)
Typical Line Output
THD + N (dB)
Normal operation 9.6 −91 −92.5 Normal (default)
Boost Level 1 9.75 −91.5 −92.5
Boost Level 2 9.92 −91.5 −92.5
Boost Level 3 10.25 −91.5 −92.5
Normal operation 7.09 −84.5 −87 Extreme power saving
Boost Level 1 7.19 −84.8 −87.1
Boost Level 2 7.29 −84.8 −87.1
Boost Level 3 7.49 −85 −87.1
Normal operation 7.67 −89.5 −90 Power saving
Boost Level 1 7.77 −89.5 −90
Boost Level 2 7.86 −89.8 −90
Boost Level 3 8.07 −89.8 −90
Normal operation 10.55 −91 −93.5 Enhanced performance
Boost Level 1 10.74 −91 −93.5
Boost Level 2 10.93 −91 −93.5
AVDD = IOVDD = 3.3 V
Boost Level 3 11.33 −91 −93.5
Normal operation 8.1 −88 −91.2 Normal (default)
Boost Level 1 8.26 −88 −91.2
Boost Level 2 8.41 −88 −91.2
Boost Level 3 8.73 −88 −91.2
Normal operation 5.73 −85 −86 Extreme power saving
Boost Level 1 5.82 −85.4 −86
Boost Level 2 5.91 −85.5 −86
Boost Level 3 6.1 −85.5 −86
Normal operation 6.27 −86 −89.4 Power saving
Boost Level 1 6.36 −86.1 −89.5
Boost Level 2 6.46 −86.3 −89.5
Boost Level 3 6.65 −86.3 −89.5
Normal operation 9.01 −88 −91.5 Enhanced performance
Boost Level 1 9.2 −88 −91.5
Boost Level 2 9.38 −88 −91.5
AVDD = IOVDD = 1.8 V
Boost Level 3 9.76 −88 −91.5