Specifications

Document Number: 002-30672 Rev. ** Page 27 of 46
PRELIMINARY
CYBT-243068-02
CYBT-243069-02
Digital I/O Characteristics
ADC Characteristics
Table 19. Digital I/O Characteristics
Characteristics Symbol Min Typ Max Unit
Input low voltage (VDD = 3 V) V
IL
––0.8V
Input high voltage (VDD = 3 V) V
IH
2.4 – – V
Input low voltage (VDD = 1.8 V) V
IL
––0.4V
Input high voltage (VDD = 1.8 V) V
IH
1.4 – – V
Output low voltage V
OL
––0.4V
Output high voltage V
OH
VDDO – 0.4 V – – V
Input low current I
IL
––1.0µA
Input high current I
IH
––1.0µA
Output low current (VDD = 3 V, V
OL
= 0.4 V) I
OL
––4.0mA
Output low current (VDD = 3 V, V
OL
= 1.8 V) I
OL
––2.0mA
Output high current (VDD = 3 V, V
OH
= 2.6 V) I
OH
––8.0mA
Output high current (VDD = 1.8 V, V
OH
= 1.4 V) I
OH
––4.0mA
Input capacitance C
IN
––0.4pF
Table 20. Electrical Characteristics
Parameter Symbol Conditions/Comments Min Typ Max Unit
Current consumption I
TOT
––23mA
Power down current – At room temperature – 1 – µA
ADC Core Specification
ADC reference voltage VREF From BG with ±3% accuracy – 0.85 – V
ADC sampling clock – – – 12 – MHz
Absolute error – Includes gain error, offset and
distortion. Without factory calibration.
––5%
Includes gain error, offset and
distortion. After factory calibration.
––2%
ENOB – For audio application 12 13 –
Bit
For static measurement 10 – –
ADC input full scale FS For audio application – 1.6 –
For static measurement 1.8 – 3.6
Conversion rate – For audio application 8 16 – kHz
Signal bandwidth –
For audio application 20 – 8K
Hz
For static measurement – DC –
Input impedance R
IN
For audio application 10 – –
KΩ
For static measurement 500 – –
Startup time –
For audio application – 10 – ms
For static measurement – 20 – µs
MIC PGA Specifications
MIC PGA gain range – – 0 – 42 dB
MIC PGA gain step – – – 1 – dB
PGA input referred noise – At 42 dB PGA gain A-weighted – – 4 µV