Rainbow-electronics ADC12038 Manual de usuario descargar pdf (Pagina 5)

Electrical Characteristics

The following specifications apply for V

5.0 V

REF

4.096 V

REF

, 12-bit

sign conversion mode, f

8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f

5 MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R

25X, source impedance for V

REF

and V

REF

25X, fully-differential input with fixed 2.048V common-mode voltage, and 10(t

) acquisition time unless otherwise specified.

Boldface limits apply for T

MIN

to T

MAX

; all other limits T

C. (Notes 7, 8 and 9)

Symbol Parameter Conditions

Typical Limits Units

(Note 10) (Note 11) (Limits)

REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS

REF

Reference Input Capacitance 85 pF

A/D

A/DIN1 and A/DIN2 Analog Input

75 pF

Capacitance

A/DIN1 and A/DIN2 Analog Input V

5.0V or

0.1

1.0 mA (max)

Leakage Current V

CH0–CH7 and COM Input Voltage GND

0.05 V (min)

0.05 V (max)

CH0–CH7 and COM Input Capacitance 10 pF

MUXOUT

MUX Output Capacitance 20 pF

Off Channel Leakage (Note 16) On Channel

5V and

0.01

0.3 mA (min)

CH0–CH7 and COM Pins Off Channel

On Channel

0V and

0.01 0.3 mA (max)

Off Channel

On Channel Leakage (Note 16) On Channel

5V and

0.01 0.3 mA (max)

CH0–CH7 and COM Pins Off Channel

On Channel

0V and

0.01

0.3 mA (min)

Off Channel

MUXOUT1 and MUXOUT2 V

MUXOUT

5.0V or

0.01 0.3 mA (max)

Leakage Current V

MUXOUT

MUX On Resistance V

2.5V and

850 1150 X (max)

MUXOUT

2.4V

Matching Channel to Channel V

2.5V and

MUXOUT

2.4V

Channel to Channel Crosstalk V

40 kHz

72 dB

MUX Bandwidth 90 kHz

1 2 3 4 5 6 7 8 9 10 ... 41 42

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Rainbow-electronics ADC12038 Manual de usuario Pagina 5

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