Cirrus-logic CS5373A Manuel d'utilisateur télécharger pdf (Page 6)

CS5373A

6 DS703F2

ANALOG INPUT CHARACTERISTICS

Notes: 7. Maximum integrated noise over the measurement bandwidth for the voltage reference device attached

to the VREF

± inputs.

8. The modulator analog inputs are normally driven by a CS3301A/02A amplifier.

9. Differential anti-alias capacitors are discrete external components and must be of good quality (C0G,

NPO, poly). Poor quality capacitors will degrade total harmonic distortion (THD) performance.

Parameter Symbol Min Typ Max Unit

VREF Input

{VREF+} - {VREF-} (Note 2, 3) VREF - 2.500 - V

VREF- (Note 4)VREF- - VA- - V

VREF Input Current, Modulator Only VREF

IMOD

-120- µA

VREF Input Current, Modulator + DAC AC Mode VREF

IMAC

-200- µA

VREF Input Current, Modulator + DAC DC Mode VREF

IMDC

-160- µA

VREF Input Noise (Note 7)VREF

--1µV

rms

Modulator INR±, INF± Inputs

External Anti-alias Filter Series Resistance

(Note 8, 9) Differential Capacitance

680

Differential Input Impedance INR

INF±

ZDIF

INR

ZDIF

INF

kΩ

MΩ

Single-ended Input Impedance INR

INF±

ZSE

INR

ZSE

INF

kΩ

MΩ

DAC CAP± Input

External Anti-alias Filter Differential Capacitance

(Note 9)

-10- nF

1 2 3 4 5 6 7 8 9 10 11 ... 39 40

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Cirrus-logic CS5373A Manuel d'utilisateur Page 6

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