XRD87L94 View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

XRD87L94

CMOS, 1 MSPS, 12-Bit Analog-to-Digital Converter with Parallel Logic Interface Port

Exar Corporation 

XRD87L94

ELECTRICAL CHARACTERISTICS TABLE

Unless Otherwise Specified: AVDD = DVDD = 3.3 V, FS = 1 MHz (50% Duty Cycle),

VREF(+) = 3.0 V, VREF(–) = AGND, TA = 25°C

Parameter

Symbol

Min

25°C

Typ

Max

Units Test Conditions/Comments

KEY FEATURES

Resolution

Sampling Rate

ACCURACY1

12

Bits

FS

1

MHz

Differential Non-Linearity

Integral Non-Linearity

Zero Scale Error

Full Scale Error

DNL

INL

EZS

EFS

+1

LSB

+2.5

LSB

Best Fit Line

(Max INL – Min INL)/2

+10

LSB

–10

LSB

REFERENCE VOLTAGES

Positive Ref. Voltage

Negative Ref. Voltage

Differential Ref. Voltage3

Ladder Resistance

ANALOG INPUT

Input Bandwidth (–3 dB)4

Input Voltage Range

Input Capacitance Sample5

Input Capacitance Convert5

Aperture Delay from Clock

Aperture Delay from Aperture

Signal

VREF(+)

VREF(–)

VREF

RL

1.5

AGND

1.5

BW

VIN

VREF(–)

CIN

tAP

tAP

AVDD

V

V

Functional

AVDD

V

550

Ω

3

MHz

VREF(+)

V p-p

50

pF

8

pF

55

ns

0

ns

Aperture pin load 5 pF.

Measured at 50% point.

DIGITAL INPUTS

Logical “1” Voltage

Logical “0” Voltage

Leakage Currents 6

CLK, OE, MINV

Input Capacitance

Clock Timing

Clock Period

Rise & Fall Time7

“High” Time

“Low” Time

Duty Cycle

VIH

2.5

VIL

IIN

10

5

tS

0.4

1

tR, tF

15

tPWH

500

tPWL

500

50

V

0.5

V

VIN=DGND to DVDD

µA

pF

µs

Functional

ns

Functional

ns

Functional

ns

Functional

%

DIGITAL OUTPUTS

Logical “1” Voltage

Logical “0” Voltage

3-state Leakage

Data Enable Delay

Data 3-state Delay

Data Valid Delay

Data Invalid Delay

VOH VDD-0.5

VOL

IOZ

1

tDEN

60

tDHZ

60

tDV

115

tDI

115

COUT=15 pF

V

ILOAD = 1 mA

0.5

V

ILOAD = 1 mA

µA

VOUT=DGND to DVDD

ns

ns

ns

OE = 0

ns

OE = 0

Rev. 1.00

3

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