ML2264CCR MICRO-LINEAR [Micro Linear Corporation], ML2264CCR Datasheet - Page 6

• Manufacturer Part Number: ML2264CCR
• Description: 4-Channel High-Speed 8-Bit A/D Converter with T/H (S/H)
• Manufacturer: MICRO-LINEAR [Micro Linear Corporation]

ML2264
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, T
C
PARAMETER
AC Performance Write-Read Mode (Pin 5 = 5V) Figures 5 and 6 (Continued)
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: When the voltage at any pin exceeds the power supply rails (V
Note 3: Typicals are parametric norm at 25°C.
Note 4: Parameter guaranteed and 100% production tested.
Note 5: Parameter guaranteed. Parameters not 100% tested are not in outgoing quality level calculation.
Note 6: Total unadjusted error includes offset, full scale, linearity, sample and hold, and multiplexer errors. Total unadjusted error is tested at the minimum specified times
Note 7: For –V
Note 8: Conversion time, write-read mode = t
Note 9: Defined from the time an output crosses 0.8V or 2.4V.
6
t
Time — WR Rising Edge
to INT Low
t
— RD to Data Valid
t
RD Rising Edge to Data
High Impedance State
t
t
Conversions — INT Low
to WR Low
t
t
INTL
ACC2
DH
INTH
P
IHWR
ID
L
, Delay Time Between
= 100pF. (Note 1)
, INT to Data Valid Delay
, Data Hold Time —
, Internal Comparison
, RD to INT Delay
, Data Access Time
, WR to INT Delay
for WR, RD, t
(cycle time of 1000ns).
diode drop below ground or one diode drop greater than the V
cause this input diode to conduct — especially at elevated temperatures, and cause errors for analog inputs near full scale. The spec allows 100mV forward bias of
either diode. This means that as long as the analog V
an absolute 0V
loading.
REF
• V
R1
IN
DC
, and t
the digital output code will be 0000 0000. Two on-chip diodes are tied to the analog input which will forward conduct for analog input voltages one
to 5V
P
. For example, for the ML2264XCX in the sample and hold mode, WR/RD mode: t
DC
input voltage range will therefore require a minimum supply voltage of 4.900V
A
= T
NOTES
4, 9
5, 9
4, 9
4, 9
4, 9
4, 9
WR
MIN
4
+ t
RD
to T
+ t
t
t
Figure 3
Sample & Hold Mode,
SH/TH = V
Track & Hold Mode,
SH/TH = GND
Standalone Mode
Standalone Mode
RD
RD
RI
MAX
.
> t
> t
IN
or V
, V
INTL
INTL
(Continued)
REF
CC
CC
IN
CC
does not exceed the supply voltage by more than 100mV, the output code will be correct. To achieve
= +V
< GND or V
supply. Be careful, during testing at low V
CONDITIONS
REF
= 5V ± 5%, and –V
IN
> V
CC
) the absolute value of current at that pin should be limited to 25mA or less.
REF
WR
DC
CC
= 190ns, t
over temperature variations, initial tolerance and
= GND, and timing measured at 1.4V,
levels (4.5V), as high level analog inputs (5V) can
MIN
300
240
0
0
0
0
0
RD
= 275ns with a frequency of 1.000MHz
ML2264XCX
(NOTE 3)
TYP
MAX
620
50
50
65
90
20
UNITS
ns
ns
ns
ns
ns
ns
ns
ns