ADC081500EVAL datasheet(9/32 Pages) NSC

No de pièce	ADC081500EVAL

Description	High Performance, Low Power, 8-Bit, 1.5 GSPS A/D Converter

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Fabricant	NSC [National Semiconductor (TI)]

Site Internet	http://www.national.com

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Converter Electrical Characteristics (Continued)

The following specifications apply after calibration for V

A =VDR = +1.9VDC, OutV = 1.9V, VIN (a.c. coupled) Full Scale Range =

differential 870mV

P-P,CL = 10 pF, Differential (a.c. coupled) sinewave input clock, fCLK = 1.5 GHz at 0.5VP-P with 50% duty

cycle, V

BG = Floating, Normal Control Mode, Single Data Rate Mode, REXT = 3300

Ω ±0.1%, Analog Signal Source Impedance

= 100

Ω Differential. Boldface limits apply for T

A =TMIN to TMAX. All other limits TA = 25˚C, unless otherwise noted. (Notes 6,

7)

Symbol

Parameter

Conditions

Typical

(Note 8)

Limits

(Note 8)

Units

(Limits)

CLOCK INPUT CHARACTERISTICS

V

ID

Differential Clock Input Level

Sine Wave Clock

0.6

0.4

2.0

V

P-P (min)

V

P-P (max)

Square Wave Clock

0.6

0.4

2.0

V

P-P (min)

V

P-P (max)

I

Input Current

V

IN =0orVIN =VA

±1µA

C

IN

Input Capacitance

(Notes 10, 11)

Differential

0.02

pF

Each input to ground

1.5

pF

DIGITAL CONTROL PIN CHARACTERISTICS

V

IH

Logic High Input Voltage

(Note 12)

0.85 x V

A

V (min)

V

IL

Logic Low Input Voltage

(Note 12)

0.15 x V

A

V (max)

C

IN

Input Capacitance

(Notes 11, 13)

Each input to ground

1.2

pF

DIGITAL OUTPUT CHARACTERISTICS

V

OD

LVDS Differential Output

Voltage

Measured differentially, OutV = V

A,

V

BG = Floating (Note 15)

710

400

mV

P-P (min)

920

mV

P-P (max)

Measured differentially, OutV =

GND, V

BG = Floating (Note 15)

510

280

mV

P-P (min)

720

mV

P-P (max)

∆ V

O DIFF

Change in LVDS Output Swing

Between Logic Levels

±1mV

V

OS

Output Offset Voltage

V

BG = Floating

800

mV

V

OS

Output Offset Voltage

V

BG =VA (Note 15)

1200

mV

∆ V

OS

Output Offset Voltage Change

Between Logic Levels

±1mV

I

OS

Output Short Circuit Current

Output+ & Output- connected to

0.8V

±4mA

Z

O

Differential Output Impedance

100

Ohms

V

OH

CalRun High level output

I

OH = -400uA (Note 12)

1.65

1.5

V

OL

CalRun Low level output

I

OH = 400uA (Note 12)

0.15

0.3

V

POWER SUPPLY CHARACTERISTICS

I

A

Analog Supply Current

PD = Low

PD = High

524

1.8

600

mA (max)

mA

I

DR

Output Driver Supply Current

PD = Low

PD = High

116

0.012

165

mA (max)

mA

P

D

Power Consumption

PD = Low

PD = High

1.2

3.5

1.45

W (max)

mW

PSRR1

D.C. Power Supply Rejection

Ratio

Change in Full Scale Error with

change in V

A from 1.8V to 2.0V

30

dB

PSRR2

A.C. Power Supply Rejection

Ratio

248 MHz, 50mV

P-P riding on VA

51

dB

AC ELECTRICAL CHARACTERISTICS

f

CLK1

Maximum Input Clock

Frequency

1.7

1.5

GHz (min)

f

CLK2

Minimum Input Clock

Frequency

200

MHz

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