CS43L21 datasheet(20/63 Pages) CIRRUS

20 / 63 page

DS723A1

CS43L21

DC ELECTRICAL CHARACTERISTICS

(AGND = 0 V; all voltages with respect to ground.)

16. The DC current draw represents the allowed current draw from the VQ pin due to typical leakage

through electrolytic de-coupling capacitors.

17. Valid with the recommended capacitor values on FILT+ and VQ. Increasing the capacitance will also

increase the PSRR.

DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS

18. 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 16)

0.5•VA

Ω

µA

FILT+

-VA

VSS_HP Characteristics

Nominal Voltage

DC Current Source

-0.8•(VA_HP)

µA

Power Supply Rejection Ratio (PSRR) (Note 17)

1 kHz

-60-

Parameters (Note 18)

Symbol

Min

Max

Units

Input Leakage Current

Iin

-±10

µA

Input Capacitance

-10

1.8 V - 3.3 V Logic

High-Level Output Voltage (IOH = -100 µA)

VOH

VL - 0.2

Low-Level Output Voltage (IOL = 100 µA)

VOL

-0.2

High-Level Input Voltage

VIH

0.68•VL

Low-Level Input Voltage

VIL

0.32•VL

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