ADC12132CIMSAX datasheet(7/42 Pages) NSC

No. de pieza	ADC12132CIMSAX

Descripción Electrónicos	Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

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DC and Logic Electrical Characteristics

The following specifications apply for (V

+ =V

A+=VD+ = +5V, VREF+ = +4.096V, and fully-differential input with fixed 2.048V

common-mode voltage) or (V

+ =V

A+=VD+ = +3.3V, VREF+ = +2.5V and fully-differential input with fixed 1.250V common-

mode voltage), V

REF− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, VREF− and VREF+

≤ 25Ω,f

CK

=f

SK = 5 MHz, and 10 (tCK) acquisition time unless otherwise specified. Boldface limits apply for TA =TJ =TMIN to TMAX; all

other limits T

A =TJ = 25˚C. (Notes 7, 8, 9)

Symbol

Parameter

Conditions

Typical

(Note 10)

V

+ =V

A+=

V

D+ = 3.3V

Limits

(Note 11)

V

+ =V

A+=

V

D+=5V

Limits

(Note 11)

Units

(Limits)

CCLK, CS, CONV, DI, PD AND SCLK INPUT CHARACTERISTICS

V

IN(1)

Logical “1” Input Voltage

V

A+=VD+=V

+ +10%

2.0

V (min)

V

IN(0)

Logical “0” Input Voltage

V

A+=VD+=V

+ −10%

0.8

V (max)

I

IN(1)

Logical “1” Input Current

V

IN =V

+

0.005

1.0

µA (max)

I

IN(0)

Logical

′“0” Input Current

V

IN = 0V

−0.005

−1.0

µA (min)

DO, EOC AND DOR DIGITAL OUTPUT CHARACTERISTICS

V

OUT(1)

Logical “1” Output Voltage

V

A+=VD+=V

+ − 10%,

I

OUT = −360 µA

2.4

V (min)

V

A+=VD+=V

+ − 10%,

I

OUT = −10 µA

2.9

4.25

V (min)

V

OUT(0)

Logical “0” Output Voltage

V

A+=VD+=V

+ − 10%

I

OUT = 1.6 mA

0.4

V (max)

I

OUT

TRI-STATE Output Current

V

OUT =0V

V

OUT =V

+

−0.1

−3.0

3.0

−3.0

3.0

µA (max)

+I

SC

Output Short Circuit Source Current

V

OUT = 0V

−14

mA

−I

SC

Output Short Circuit Sink Current

V

OUT =VD+16

mA

POWER SUPPLY CHARACTERISTICS

I

D+

Digital Supply Current

Awake (Active)

1.5

2.5

mA (max)

CS = HIGH, Powered Down,

CCLK on

600

µA

CS = HIGH, Powered Down,

CCLK off

20

µA

I

A+

Positive Analog Supply Current

Awake (Active)

3.0

4.0

mA (max)

CS = HIGH, Powered Down,

CCLK on

10

µA

CS = HIGH, Powered Down,

CCLK off

0.1

µA

I

REF

Reference Input Current

CS = HIGH, Powered Down,

CCLK on

70

µA

CS = HIGH, Powered Down,

CCLK off

0.1

µA

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