ADC0820CNED Philips Semiconductors, ADC0820CNED Datasheet - Page 11

• Manufacturer Part Number: ADC0820CNED
• Description: 8-Bit/ high-speed/ mP-compatible A/D converter with track/hold function
• Manufacturer: Philips Semiconductors

Philips Semiconductors Linear Products
August 31, 1994
8-Bit, high-speed, P-compatible A/D converter with
track/hold function
a. External Reference 2.5V Full-Scale
5V
VI
VI
N
N
MS COMPARATORS ZERO
TO REFERENCE LADDER.
LS COMPARATORS FLOAT
1.2k
(+)
(–)
2.5V
WR
IN+
GND
REF (+)
REF(–)
THE COMPARATOR’S INPUT
MS COMPARATORS COMPARE
V
LADDER TAP. THE COMPARATOR
V
LS COMPARATORS ZERO TO V
CAPACTORS TRACK V
IN
IN
TO THEIR REFERENCE
V
LADDER TAP
Figure 8. Operating Sequence (WR-RD Mode)
VI
VI
b. Power Supply as Reference
N
N
Figure 9. Analog Input Options
5V
(+)
(–)
.
IN
.
IN
IN+
GND
REF (+)
REF(–)
578
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
600ns
5V
VI
VI
c. Input not Referred to GND
N
N
1.2k
(+)
(–)
CAN BE READ
2.5V
LS COMPARATORS OUTPUTS
ARE LATCHED AND
MS COMPARATORS RE
TURN TO ZERO MODE.
V
CURRENT PATH MUST
STILL EXIST FROM
IN
(–) TO GROUND
IN+
GND
REF (+)
REF(–)
Product specification
ADC0820