ADC0820 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

ADC0820

8-Bit, high-speed, µP-compatible A/D converter with track/hold function

Philips Electronics 

Philips Semiconductors Linear Products

8-Bit, high-speed, µP-compatible A/D converter with

track/hold function

Product specification

ADC0820

WR

• MS COMPARATORS ZERO

TO REFERENCE LADDER.

• LS COMPARATORS FLOAT

600ns

• MS COMPARATORS COMPARE

VIN TO THEIR REFERENCE

LADDER TAP. THE COMPARATOR

VIN • VLADDER TAP.

• LS COMPARATORS ZERO TO VIN

THE COMPARATOR’S INPUT

CAPACTORS TRACK VIN.

• MS COMPARATORS OUT–

PUTS ARE LATCHED. THE

MS DAC IS SET. THE MS

COMPARATOR FLOATS.

• LS COMPARATORS COM–

PARE LSB SECTION OF REF–

ERENCE LADDER

Figure 8. Operating Sequence (WR-RD Mode)

• LS COMPARATORS OUTPUTS

ARE LATCHED AND

CAN BE READ

• MS COMPARATORS RE

TURN TO ZERO MODE.

VIN(+)

VIN(–)

1.2k

5V

IN+

GND

REF (+)

2.5V

REF(–)

VIN(+)

VIN(–)

5V

IN+

GND

REF (+)

REF(–)

a. External Reference 2.5V Full-Scale

b. Power Supply as Reference

Figure 9. Analog Input Options

VIN(+)

IN+

1.2k

5V

2.5V

VIN(–)

GND

REF (+)

REF(–)

• CURRENT PATH MUST

STILL EXIST FROM

VIN(–) TO GROUND

c. Input not Referred to GND

August 31, 1994

578

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