CS5373A-ISZ Просмотр технического описания (PDF) - Cirrus Logic

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CS5373A-ISZ

Low-power, High-performance ∆Σ Modulator and Test DAC

Cirrus Logic 

CS5373A

ANALOG INPUT CHARACTERISTICS

Parameter

Symbol Min

Typ

Max

VREF Input

{VREF+} - {VREF-}

(Note 2, 3) VREF

-

2.500

-

VREF-

(Note 4) VREF-

-

VA -

-

VREF Input Current, Modulator Only

VREFIMOD

-

120

-

VREF Input Current, Modulator + DAC AC Mode

VREFIMAC

-

200

-

VREF Input Current, Modulator + DAC DC Mode

VREFIMDC

-

160

-

VREF Input Noise

(Note 7) VREFIN

-

-

1

Modulator INR±, INF± Inputs

External Anti-alias Filter

(Note 8)

Series Resistance RAA

Differential Capacitance CAA

-

680

-

-

20

-

Differential Input Impedance

INR± ZDIFINR

-

20

-

INF± ZDIFINF

-

1

-

Single-ended Input Impedance

INR± ZSEINR

-

40

-

INF± ZSEINF

-

2

-

DAC CAP± Input

External Anti-alias Filter

(Note 8)

Differential Capacitance CAA

-

10

-

Unit

V

V

µA

µA

µA

µVrms

Ω

nF

kΩ

MΩ

kΩ

MΩ

nF

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

to the VREF± inputs.

8. 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.

6

DS703F1

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