MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
_______________________________________________________________________________________ 5
TIMING CHARACTERISTICS—MAX1084
(Figures 1, 2, 8, 9; V
DD
= +4.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
TIMING CHARACTERISTICS—MAX1085
(Figures 1, 2, 8, 9; V
DD
= +2.7V to +3.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
CONDITIONS
ns
100
t
CSW
CS Pulse-Width High
ns
62
t
CL
SCLK Pulse-Width Low
ns
62
t
CH
ns
156
t
CP
SCLK Period
SCLK Pulse-Width High
ns
65
t
DOE
CS Fall to DOUT Enable
ns
10 65
t
DOD
CS Rise to DOUT Disable
ns
80
t
DOV
SCLK Rise to DOUT Valid
ns
10
t
DOH
SCLK Rise to DOUT Hold
ns
35
t
CSS
CS Fall to SCLK Rise Setup
ns
0
t
CSH
SCLK Rise to CS Rise Hold
ns
35
t
CSO
SCLK Rise to CS Fall Ignore
ns
35
t
CS1
CS Rise to SCLK Rise Ignore
UNITSMIN TYP MAXSYMBOLPARAMETER
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
CONDITIONS
ns
83
t
CL
SCLK Pulse-Width Low
ns
83
t
CH
ns
208
t
CP
SCLK Period
SCLK Pulse-Width High
ns
13 85
t
DOD
CS Rise to DOUT Disable
ns
100
t
DOV
SCLK Rise to DOUT Valid
ns
13
t
DOH
SCLK Rise to DOUT Hold
ns
45
t
CSS
CS Fall to SCLK Rise Setup
ns
0
t
CSH
SCLK Rise to CS Rise Hold
ns
45
t
CSO
SCLK Rise to CS Fall Ignore
ns
45
t
CS1
CS Rise to SCLK Rise Ignore
UNITSMIN TYP MAXSYMBOLPARAMETER
Note 1: Tested at V
DD
= V
DD,MIN
.
Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has
been calibrated.
Note 3: Internal reference, offset, and reference errors nulled.
Note 4: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5: External load should not change during conversion for specified accuracy. Guaranteed specification limit of 2mV/mA due to
production test limitation.
Note 6: Electrical characteristics are guaranteed from V
DD,MIN
to V
DD,MAX
. For operations beyond this range, see Typical Operating
Characteristics.
Note 7: MAX1084 tested with 20pF on DOUT and f
SCLK
= 6.4MHz, 0 to 5V. MAX1085 tested with same loads, f
SCLK
= 4.8MHz, 0 to
3V. DOUT = full scale.
C
LOAD
= 20pF ns
85
t
DOE
CS Fall to DOUT Enable
C
LOAD
= 20pF ns
100
t
CSW
CS Pulse-Width High
