MAX1245ACAP Просмотр технического описания (PDF) - Maxim Integrated

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MAX1245ACAP

+2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC

Maxim Integrated 

+2.375V, Low-Power, 8-Channel,

Serial 12-Bit ADC

____________________________Typical Operating Characteristics (continued)

(VDD = 2.5V, VREF = 2.048V, fCLK = 1.5MHz, CLOAD = 20pF, TA = +25°C, unless otherwise noted.)

AVERAGE SUPPLY CURRENT

vs. CONVERSION RATE

1000

100

VDD = VREF = 2.5V

CODE = 101010100000

RL = ∞

EFFECTIVE NUMBER OF BITS

vs. INPUT FREQUENCY

12.0

11.5

10

8 CHANNELS

1

1 CHANNEL

0.1

0.1 1 10 100 1k 10k 100k

CONVERSIONS PER CHANNEL PER SECOND (Hz)

11.0

10.5

10.0

1

10

100

INPUT FREQUENCY (kHz)

0.25

0.20

0.15

0.10

0.05

0

-0.05

-0.10

-0.15

-0.20

-0.25

0

INTEGRAL NONLINEARITY

2048

DIGITAL CODE

4096

20

0

-20

-40

-60

-80

-100

-120

0

FFT PLOT

fTONE = 10ksps

fSAMPLE = 100ksps

10

20

30

FREQUENCY (kHz)

40

50

6 _______________________________________________________________________________________

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