ADC0820CNED Philips Semiconductors, ADC0820CNED Datasheet - Page 5

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

1. Unadjusted error includes offset, full-scale, and linearity errors.
2. Accuracy may degrade if t
3. Typical values are at 25 C and represent most likely parametric norm.
4. Guaranteed but not 100% production tested. These limits are not used to calculate outgoing quality levels.
5. V
Philips Semiconductors Linear Products
AC ELECTRICAL CHARACTERISTICS
V
NOTES:
August 31, 1994
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SR
C
C
C
DD
CRD
ACCO
CWR-RD
WR
WR
RD
ACC1
ACC1
ACC2
I
1H
INTL
INTH
INTHWR
RDY
ID
RI
P
8-Bit, high-speed, P-compatible A/D converter with
track/hold function
VIN
OUT
IN
, t
= 5V, t
REF
0H
and VIN must be applied after V
R
= t
Conversion time for RD mode
Access time (delay from falling edge of
RD to output valid)
Conversion time for WR-RD mode
Write time
Write time
Read time
Access time (delay from falling edge of
RD t o output valid)
RD t o output valid)
Access time (delay from falling edge of
RD t o output valid)
Internal comparison time
Three-state control (delay from rising
edge of RD to Hi-Z state)
Delay from rising edge of WR to falling
edge of INT
Delay from rising edge of RD to rising
edge of INT
Delay from rising edge of WR to rising
edge of INT
Delay from CS to RDY
Delay from INT to output valid
Delay from RD to INT
Delay from end of conversion to next
conversion
Slew rate, tracking
Analog input capacitance
Logic output capacitance
Logic input capacitance
F
= 20ns, V
PARAMETER
PARAMETER
REF(+)
WR
= 5V, V
or t
Min
Max
Min
RD
is shorter than the minimum value specified.
REF(-)
CC
has been turned on to prevent possibility of latching.
= 0V, and T
A
Mode=V
= 25 C, unless otherwise specified.
Mode=V
Mode=V
Mode=V
Figure 1, C
Figures 2 and 3a, C
Figures 1, 2, 3a, and 3b
Figures 1, 3a, and 3b,
Mode=V
TEST CONDITIONS
TEST CONDITIONS
Figure 3b, C
Figure 3a, C
DD
Mode=V
Mode=V
Mode=V
R
Figure 2, C
Figures 3a and 3b
Mode=0, Figure 1
Mode=0, Figure 1
t
t
572
L
DD
DD
DD
RD
RD
, t
=1k , C
Mode=V
C
C
WR
, Figures 3a and 3b
, Figures 3a and 3b
, Figures 3a and 3b
>t
<t
Figure 3b
C
Figure 2
L
L
I
I
L
L
=100pF
=100pF
DD
; Figure 3a
; Figure 3b
=600ns, t
=50pF, Mode=0
=50pF
DD
DD
DD
, C
, t
, t
L
, t
L
L
L
DD
=10pF
=50pF
L
=15pF
=15pF
RD
RD
RD
=50pF
;
L
<t
>t
<t
=50pF
RD
I
I
I
;
;
;
=600ns;
2
2
2
2
Min
500
600
600
LIMITS
t
t
CRD
RD
Typ
190
210
800
100
125
175
200
1.6
0.1
70
90
50
20
45
+200
5
5
+20
3
4
Product specification
ADC0820
t
t
CRD
RD
1300
Max
1.52
280
320
120
150
200
225
270
100
290
2.5
50
50
+290
t
I
+50
UNIT
UNIT
V/ s
pF
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s