CS5374 データシートの表示（PDF） - Cirrus Logic

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CS5374

Dual High-performance Amplifier & ΔΣ Modulator

Cirrus Logic 

CS5374

DS862F1

CS5374

ANALOG CHARACTERISTICS (CONT.)

Parameter

Symbol

Modulator Inputs

Input Signal Frequencies

(Note 9)

Full-scale Differential AC Input

Full-scale Differential DC Input

Input Common Mode Voltage

Input Voltage Range (Vcm ± Signal )

Differential Input Impedance

INR±

INF±

Single-ended Input Impedance

INR±

INF±

External Anti-alias Filter

(Note 10)

Series Resistance

Differential Capacitance

VREF Inputs

[VREF+] - [VREF-]

VREF-

VREF Input Current

VREF Input Noise

(Note 2, 3)

(Note 4)

(Note 11)

VBW

VAC

VDC

VCM

VRNG

ZDIFINR

ZDIFINF

ZSEINR

ZSEINF

RAA

CDIFF

VREF

VREF-

VREFII

VREFIN

Min

Typ

Max

DC

-

2000

-

-

5

-2.5

-

2.5

-

(VA-)+2.5

-

(VA-)+0.7

-

(VA+)-1.25

-

20

-

-

1

-

-

40

-

-

2

-

-

680

-

-

20

-

-

2.500

-

-

VA -

-

-

120

-

-

-

1

Unit

Hz

Vpp

VDC

V

V

kΩ

MΩ

kΩ

MΩ

Ω

nF

V

V

µA

µVrms

Notes: 9. The upper bandwidth limit is determined by the selected digital filter cut-off frequency.

10. 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. See Figure 1 for

external anti-alias filter connections.

11. Maximum integrated noise over the measurement bandwidth for the voltage reference device attached

to the VREF inputs.

OUT+

AMPLIFIER

OUT-

CS5374

680

680

20nF

680

C0G

680

20nF

C0G

INR+

INF+

MODULATOR

INF-

INR-

Figure 1. External Anti-alias Filter Components

6

DS862F1

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