ADC 2 Manual do Utilizador descarregar pdf (Página 10)

REV. A–10–

AD7866

AV

DD

RIPPLE FREQUENCY – Hz

0

–100

1k

PSRR – dB

10k

–90

–80

–70

–60

–50

–40

–30

–20

–10

100k 1M

100mV p-p SINE WAVE ON AV

DD

2.5V EXT REFERENCE ON V

REF

T

A

= 25

ⴗ

C

V

DD

= 2.7V

V

DD

= 3.6V

TPC 4a. PSRR vs. Supply Ripple Frequency,

with Supply Decoupling

AV

DD

RIPPLE FREQUENCY – Hz

0

–100

1k

PSRR – dB

10k

–90

–80

–70

–60

–50

–40

–30

–20

–10

100k 1M

100mV p-p SINE WAVE ON AV

DD

2.5V EXT REFERENCE ON D

CAP

A, D

CAP

B

T

A

= 25

ⴗ

C

V

DD

= 2.7V

V

DD

= 4.75V

V

DD

= 3.6V

TPC 4b. PSRR vs. Supply Ripple Frequency,

with Supply Decoupling

ADC – Code

1.0

0

DNL – LSB

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

500 1000 1500 2000 2500 3000 3500 4000

TPC 5. DC DNL Plot

ADC – Code

1.0

0

INL – LSB

0.0

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

–1.0

500 1000 1500 2000 2500 3000 3500 4000

TPC 6. DC INL Plot

INPUT FREQUENCY – Hz

–60

10k

THD – dB

–65

–70

–75

–80

–85

–90

100k 1000k

T

A

= 25ⴗC

V

DD

= 4.75V

R

IN

= 100⍀

R

IN

= 50⍀

R

IN

= 10⍀

TPC 7. THD vs. Analog Input Frequency

for Various Source Impedances

INPUT FREQUENCY – Hz

–70

10k

THD – dB

–72

–74

–76

–78

–80

–82

100k 1000k

T

A

= 25ⴗC

–84

–86

–88

–90

V

DD

= V

DRIVE

= 2.7V

V

DD

= V

DRIVE

= 3.6V

V

DD

= V

DRIVE

= 4.75V

V

DD

= V

DRIVE

= 5.25V

TPC 8. THD vs. Analog Input Frequency

for Various Supply Voltages

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 23 24

Comentários a estes Manuais

Sem comentários