Cirrus Logic CS43L21 - Manual (Page 20)

20 DS723F1
CS43L21
DC ELECTRICAL CHARACTERISTICS
(AGND = 0 V; all voltages with respect to ground.)
17. The DC current draw represents the allowed current draw from the VQ pin due to typical leakage
through electrolytic de-coupling capacitors.
18. Valid with the recommended capacitor values on FILT+ and VQ. Increasing the capacitance will also
increase the PSRR.
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS
19. 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 17)
-
-
- 0.5•VA
23
-
-
-
10
V
k

A
FILT+ - VA - V
VSS_HP Characteristics
Nominal Voltage
DC Current Source -
- -0.8•(VA_HP) -
10
V
A
Power Supply Rejection Ratio (PSRR) (Note 18) 1 kHz - 60 - dB
Parameters (Note 19) Symbol Min Max Units
Input Leakage Current I
in
- ±10
A
Input Capacitance - 10 pF
1.8 V - 3.3 V Logic
High-Level Output Voltage (I
OH
= -100
A) V
OH
VL - 0.2 - V
Low-Level Output Voltage (I
OL
= 100 A) 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