SC14CVMDECT datasheet(41/57 Pages) DIALOG

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Datasheet

Revision 3.0

28-Jul-2015

CFR0011-120-00-FM Rev 5

41 of 57

SC14CVMDECT SF

Cordless Voice Module

FINAL

Efficiency 75% at 300 mW@2 V, 500 mW@2.5 V into a 4

 transducer.

Table 31: PAOUTp, PAOUTn external components

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX

UNIT

C_VDDPA

Decoupling capacitor on

VDDPA

Required when Class-D is used

and guaranteed life time.

(see Figure 32)

F

Cs_PAOUT

Snubber capacitor (to

reduce ringing at

PAOUTp/n)

Required when Class-D is used

to prevent EMI and guaranteed

life time. (see Figure 32)

1nF

Rs_PAOUT

Snubber resistor (to

reduce ringing at

PAOUTp/n)

Required when Class-D is used

to prevent EMI and guaranteed

life time. (see Figure 32)



Figure 32: Class-D external components

PAOUTp

PAOUTn

VDDPA

VSS/GND

C_VDDPA

Cs_PAOUT

Rs_PAOUT

Figure 33: CLASS-D amplifier measurement setup

out

AP-system2, settings:

H

H



PAOUTp

PAOUTn

VDDPA

GND (2x)

dummy load

F ceramic

2.5 V (= VBAT)

DUT

100



100



(models typical speaker)

bw = <10 Hz until 30 kHz

filter = A-weighting

detection = 4/s RMS

input = high-ohmic

AP AUX-0025

passive switching ampli-

fier measurement filter

resistors reduce

influence from

measurement on

DUT

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