Rainbow-electronics ADC12041 Bedienungsanleitung PDF herunterladen (Seite 5)

Digital Logic Input/Output Characteristics The following specifications apply to the ADC12041 for

5V, V

REF

4.096V, V

REF

0.0V, 12-bit

sign conversion mode, f

CLK

12.0 MHz, R

25X, source

impedance for V

REF

and V

REF

1X, fully differential input with fixed 2.048V common-mode voltage, and minimum acquisi-

tion time, unless otherwise specified. Boldface limits apply for T

MIN

to T

MAX

; all other limits T

Symbol Parameter Conditions

Typical Limits Unit

(Note 10) (Note 11) (Limit)

Logic High Input Voltage V

5.5V 2.2 V (min)

Logic Low Input Voltage V

4.5V 0.8 V (max)

Logic High Input Current V

5V 0.035 2.0 mA (max)

Logic Low Input Current V

0.035

2.0 mA (max)

Logic High Output Voltage V

4.5V

2.4 2.4 V (min)

OUT

1.6 mA

Logic Low Output Voltage V

4.5V

0.4 0.4 V (max)

OUT

1.6 mA

OFF

TRI-STATE Output Leakage Current V

OUT

2.0 mA (max)

OUT

D12– D0 Input Capacitance 10 pF

Converter AC Characteristics The following specifications apply to the ADC12041 for V

5V,

REF

4.096V, V

REF

0.0V, 12-bit

sign conversion mode, f

CLK

12.0 MHz, R

25X, source impedance for V

REF

and V

REF

1X, fully differential input with fixed 2.048V common-mode voltage, and minimum acquisition time, unless

otherwise specified. Boldface limits apply for T

MIN

to T

MAX

; all other limits T

Symbol Parameter Conditions

Typical Limits Unit

(Note 10) (Note 11) (Limit)

Auto Zero Time 78 78 clks

120 ns clks (max)

CAL

Full Calibration Time 4946 4946 clks

120 ns clks (max)

CLK Duty Cycle 50 %

40 % (min)

60 % (max)

CONV

Conversion Time Sync-Out Mode 44 44 clks (max)

AcqSYNCOUT

Acquisition Time Minimum for 13 Bits 9 9 clks

120 ns clks (max)

(Programmable) Maximum for 13 Bits 79 79 clks

120 ns clks (max)

1 2 3 4 5 6 7 8 9 10 ... 29 30

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