ADC0804 datasheet(6/17 Pages) INTERSIL

Part #	ADC0804

Description	8-Bit, Microprocessor-Compatible, A/D Converters

PDF	17 Pages

Scroll/Zoom	100%

Manufacturer	INTERSIL [Intersil Corporation]

Direct Link	http://www.intersil.com/cda/home

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6 / 17 page

FIGURE 6. FULL SCALE ERROR vs fCLK

FIGURE 7. EFFECT OF UNADJUSTED OFFSET ERROR

FIGURE 8. OUTPUT CURRENT vs TEMPERATURE

FIGURE 9. POWER SUPPLY CURRENT vs TEMPERATURE

Typical Performance Curves (Continued)

fCLK (kHz)

400

800

1200

1600

2000

V+ = 4.5V

V+ = 5V

V+ = 6V

VIN(+) = VIN(-) = 0V

ASSUMES VOS = 2mV

THIS SHOWS THE NEED

FOR A ZERO ADJUSTMENT

IF THE SPAN IS REDUCED

VREF/2 (V)

0.01

0.1

1.0

-50

TA AMBIENT TEMPERATURE (oC)

-ISINK

VOUT = 0.4V

ISOURCE

VOUT = 2.4V

DATA OUTPUT

BUFFERS

V+ = 5V

-25

100

125

TA AMBIENT TEMPERATURE (oC)

-50

-25

100

125

1.6

1.5

1.4

1.3

1.2

1.1

1.0

fCLK = 640kHz

V+ = 5.5V

V+ = 5.0V

V+ = 4.5V

Timing Diagrams

FIGURE 10A. START CONVERSION

tWI

tW(WR)I

1 TO 8 x 1/fCLK

INTERNAL TC

ACTUAL INTERNAL

STATUS OF THE

CONVERTER

INTR

(LAST DATA READ)

(LAST DATA NOT READ)

“NOT BUSY”

“BUSY”

DATA IS VALID IN

OUTPUT LATCHES

INTR

ASSERTED

tVI

1/2 fCLK

ADC0803, ADC0804

ADC0804 Datasheet(PDF) 6 Page - Intersil Corporation

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