Cirrus-logic CS4245 Instrukcja Użytkownika Pobierz pdf (Strona 13)

DS656F3 13

CS4245

ADC 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 for Commercial or -40° to

+85° C for Automotive; Input test signal: 1 kHz sine wave; measurement bandwidth is 10 Hz to 20 kHz;

Fs = 48/96/192 kHz. Synchronous mode; All connections as shown in Figure 12 on page 29.

Line-Level Inputs

Parameter Symbol Min Typ Max Unit

Dynamic Performance for VA = 4.75 V to 5.25 V

Dynamic Range

PGA Setting: -12 dB to +6 dB

A-weighted

unweighted

(Note 13) 40 kHz bandwidth unweighted

PGA Setting: +12 dB Gain

A-weighted

unweighted

(Note 13) 40 kHz bandwidth unweighted

104

101

Total Harmonic Distortion + Noise (Note 12)

PGA Setting: -12 dB to +6 dB

-1 dB

-20 dB

-60 dB

(Note 13) 40 kHz bandwidth -1 dB

PGA Setting: +12 dB Gain

-1 dB

-20 dB

-60 dB

(Note 13) 40 kHz bandwidth -1 dB

THD+N

-95

-81

-41

-92

-75

-35

-89

-86

Dynamic Performance for VA = 3.13 V to 3.46 V

Dynamic Range

PGA Setting: -12 dB to +6 dB

A-weighted

unweighted

(Note 13) 40 kHz bandwidth unweighted

PGA Setting: +12 dB Gain

A-weighted

unweighted

(Note 13) 40 kHz bandwidth unweighted

101

Total Harmonic Distortion + Noise (Note 12)

PGA Setting: -12 dB to +6 dB

-1 dB

-20 dB

-60 dB

(Note 13) 40 kHz bandwidth -1 dB

PGA Setting: +12 dB Gain

-1 dB

-20 dB

-60 dB

(Note 13) 40 kHz bandwidth -1 dB

THD+N

-92

-78

-38

-84

-89

-72

-32

-81

-86

-83

Line-Level Inputs

Parameter Symbol

Commercial Grade

UnitMin Typ Max

Interchannel Isolation - 90 - dB

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 58 59

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