Cirrus Logic CS53L21 - Manual (Page 18)

18 DS700PP1
CS53L21
DC ELECTRICAL CHARACTERISTICS
(AGND = 0 V; all voltages with respect to ground.)
14. The DC current draw represents the allowed current draw from the VQ pin due to typical leakage
through electrolytic de-coupling capacitors.
15. Valid with the recommended capacitor values on FILT+ and VQ. Increasing the capacitance will also
increase the PSRR.
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS
16. See “Digital I/O Pin Characteristics” on page 8 for serial and control port power rails.
Parameters Min Typ Max Units
VQ Characteristics
Nominal Voltage
Output Impedance
DC Current Source/Sink
(Note 14)
-
-
- 0.5•VA
23
-
-
-
10
V
k Ω
μA
FILT+ - VA - V
MIC BIAS Characteristics
Nominal Voltage MICBIAS_LVL[1:0] = 00
MICBIAS_LVL[1:0] = 01
MICBIAS_LVL[1:0] = 10
MICBIAS_LVL[1:0] = 11
DC Current Source
Power Supply Rejection Ratio (PSRR)
1 kHz
-
-
-
-
-
- 0.8•VA
0.7•VA
0.6•VA
0.5•VA
-
50
-
-
-
-
1
-
V
V
V
V
mA
dB
Power Consumption (Normal Operation Worse Case) 1 kHz - - 30 mW
Power Supply Rejection Ratio (PSRR) (Note 15) 1 kHz - 60 - dB
Parameters (Note 16) Symbol Min Max Units
Input Leakage Current I
in
- ±10 μA
Input Capacitance - 10 pF
1.8 V - 3.3 V Logic
High-Level Output Voltage (I
OH
= -100 μA) V
OH
VL - 0.2 - V
Low-Level Output Voltage (I
OL
= 100 μA) V
OL
- 0.2 V
High-Level Input Voltage V
IH
0.68•VL - V
Low-Level Input Voltage V
IL
- 0.32•VL V