Cirrus-logic CS5345 Manual do Utilizador descarregar pdf (Página 12)

12 DS658F4

CS5345

PGAOUT ANALOG CHARACTERISTICS

Test conditions (unless otherwise specified): AGND = DGND = 0 V; VA = 3.13 V to 5.25 V; VD = 3.13 V to 5.25 V or

VA + 0.25 V, whichever is less; VLS = VLC = 1.71 V to 5.25 V; T

= -10° to +70° C; Input test signal: 1 kHz sine

wave; Measurement bandwidth: 10 Hz to 20 kHz; Fs = 48/96/192 kHz; Synchronous mode; All connections as

shown in Figure 7 on page 22.

11. Referred to the typical Line-Level Full-Scale Input Voltage.

VA = 4.75 V to 5.25 V

Parameter Symbol Min Typ Max Unit

Dynamic Performance with PGA Line-Level Input Selected

Dynamic Range

PGA Setting: -12 dB to +6 dB

A-weighted

unweighted

PGA Setting: +12 dB Gain

A-weighted

unweighted

104

101

Total Harmonic Distortion + Noise (Note 11)

PGA Setting: -12 dB to +6 dB

-1 dB

-20 dB

-60 dB

PGA Setting: +12 dB Gain

-1 dB

-20 dB

-60 dB

THD+N

-80

-81

-41

-80

-75

-35

-74

Dynamic Performance with PGA Mic-Level Input Selected

Dynamic Range

PGA Setting: -12 dB to 0 dB

A-weighted

unweighted

PGA Setting: +12 dB

A-weighted

unweighted

Total Harmonic Distortion + Noise (Note 11)

PGA Setting: -12 dB to 0 dB

-1 dB

-20 dB

-60 dB

PGA Setting: +12 dB

-1 dB

THD+N

-74

-60

-20

-68

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