CS4373A Просмотр технического описания (PDF) - Cirrus Logic

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CS4373A

Low-power, High-performance ∆Σ Test DAC

Cirrus Logic 

CS4373A

ANALOG CHARACTERISTICS

Parameter

Symbol Min

Typ

Max

VREF Input

{VREF+} - {VREF-}

(Note 2, 3) VREF

-

2.500

-

VREF-

(Note 4) VREF-

-

VA -

-

VREF Input Current, AC modes

VREF Input Current, DC modes

VREF Input Noise

Analog OUT± Output

VREFIAC

-

80

-

VREFIDC

-

40

-

(Note 6) VREFIN

-

-

1

Analog External Load at OUT±

Load Resistance RLOUT

50

-

-

(Note 7, 8)

Load Capacitance CLOUT

-

-

50

Differential Output Impedance

1/1 ZDIFOUT

-

1.4

-

1/2

-

10.1

-

1/4

-

7.9

-

1/8

-

5.1

-

1/16

-

3.3

-

1/32

-

2.3

-

1/64

-

1.7

-

Single-ended Output Impedance

1/1 ZSEOUT

-

0.7

-

1/2

-

7.4

-

1/4

-

9.0

-

1/8

-

9.4

-

1/16

-

9.5

-

1/32

-

9.5

-

1/64

-

9.4

-

High-Z Impedance

Crosstalk to BUF± High-Z Output

(Note 8) HZOUT

(Note 8) XTOUT

-

3

-

-

-120

-

Analog BUF± Output

Analog External Load at BUF±

Load Resistance RLBUF

1

-

-

(Note 8)

Load Capacitance CLBUF

-

-

2

Differential Output Impedance

1/1 - 1/64 ZDIFBUF

-

6

-

Single-ended Output Impedance

1/1 - 1/32 ZSEBUF

-

3

-

(Note 9) (BUF-) 1/64

-

3

-

(Note 9) (BUF+) 1/64

-

50

-

High-Z Impedance

Crosstalk to OUT± High-Z Output

(Note 8)

(Note 8)

HZBUF

XTBUF

-

4.5

-

-

-120

-

Unit

V

V

µA

µA

µVrms

MΩ

pF

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

kΩ

MΩ

dB

kΩ

nF

Ω

Ω

MΩ

dB

Notes: 6. Maximum integrated noise over the measurement bandwidth for the voltage reference device attached

to the VREF± inputs.

7. Load on the precision OUT± outputs is normally from the CS3301A / CS3302A amplifiers, which have

1 GΩ/1 TΩ typical input impedance and 18 pF typical input capacitance.

8. Guaranteed by design and/or characterization.

9. Single-ended output impedance at 1/64 is different for BUF+ and BUF- due to the output attenuator

architecture.

6

DS699F2

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