ADC12662 datasheet(5/23 Pages) NSC

Part #	ADC12662

Description	12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold

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Manufacturer	NSC [National Semiconductor (TI)]

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Dynamic Characteristics (Note 10) (Continued)

The following specifications apply for DV

CC =AVCC = +5V, VREF+(SENSE) = +4.096V, VREF−(SENSE) = AGND, RS =25Ω,fIN =

100 kHz, 0 dB from fullscale, and f

s = 1.5 MHz, unless otherwise specified. Boldface limits apply for TA =TJ from TMIN to

T

MAX; all other limits TA =TJ = +25˚C.

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 7)

(Note 8)

(Limit)

SNR

Signal-to-Noise Ratio

T

MIN to TMAX

70

67.5

dB (min)

(Note 11)

THD

Total Harmonic Distortion

T

MIN to TMAX

−80

−70

dBc (max)

(Note 12)

ENOB

Effective Number of Bits

T

MIN to tMAX

11.3

10.8

Bits (min)

(Note 13)

IMD

Intermodulation Distortion

f

IN = 88.7 kHz, 89.5 kHz

−80

dBc

DC Electrical Characteristics

The following specifications apply for DV

CC =AVCC = +5V, VREF+(SENSE) = +4.096V, VREF−(SENSE) = AGND, and fs = 1.5 MHz,

unless otherwise specified. Boldface limits apply for T

A =TJ from TMIN to TMAX; all other limits TA =TJ = +25˚C.

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 7)

(Note 8)

(Limit)

V

IN(1)

Logical “1” Input Voltage

DV

CC =AVCC = +5.5V

2.0

V (min)

V

IN(0)

Logical “0” Input Voltage

DV

CC =AVCC = +4.5V

0.8

V (max)

I

IN(1)

Logical “1” Input Current

0.1

1.0

µA (max)

I

IN(0)

Logical “0” Input Current

0.1

1.0

µA (max)

V

OUT(1)

Logical “1” Output Voltage

DV

CC =AVCC = +4.5V,

I

OUT = −360 µA

2.4

V (min)

I

OUT = −100 µA

4.25

V (min)

V

OUT(0)

Logical “0” Output Voltage

DV

CC =AVCC = +4.5V,

0.4

V (max)

I

OUT = 1.6 mA

I

OUT

TRI-STATE® Output

Leakage Current

Pins DB0–DB11

0.1

3

µA (max)

C

OUT

TRI-STATE Output Capacitance

Pins DB0–DB11

5

pF

C

IN

Digital Input Capacitance

4

pF

DI

CC

DV

CC Supply Current

2

3

mA (max)

AI

CC

AV

CC Supply Current

32

37

mA (max)

I

STANDBY

Standby Current (DI

CC +AICC)

PD=0V

50

µA

AC Electrical Characteristics

The following specifications apply for DV

CC =AVCC = +5V, VREF+(SENSE) = +4.096V, VREF−(SENSE) = AGND, and fs = 1.5 MHz,

unless otherwise specified. Boldface limits apply for T

A =TJ from TMIN to TMAX; all other limits TA =TJ = +25˚C.

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 7)

(Note 8)

(Limits)

f

s

Maximum Sampling Rate

1.5

MHz (min)

(1/t

THROUGHPUT)

t

CONV

Conversion Time

580

510

ns (min)

(S/H Low to EOC High)

660

ns (max)

t

AD

Aperture Delay

20

ns

(S/H Low to Input Voltage Held)

t

S/H

S/H Pulse Width

10

5

ns (min)

400

ns (max)

t

EOC

S/H Low to EOC Low

90

60

ns (min)

126

ns (max)

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