Datasheet
Note 1: Tested at V
DD
= 5.0V; V
SS
= 0V; unipolar-input mode.
Note 2: Relative accuracy is the analog value’s deviation (at any code) from its theoretical value after the full-scale range is cali-
brated.
Note 3: MAX1202—internal reference, offset nulled; MAX1203—external reference (V
REF
= 4.096V), offset nulled.
Note 4: On-channel grounded; sine wave applied to all off-channels.
Note 5: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 6: Guaranteed by design. Not production tested.
Note 7: Common-mode range for analog inputs is from V
SS
to V
DD
.
Note 8: External load should not change during the conversion for specified accuracy.
Note 9: Shutdown supply current is measured with V
L
at 3.3V, and with all digital inputs tied to either V
L
or GND;
REFADJ = GND. Shutdown supply current is also dependent on V
IH
(Figure 12c).
Note 10: Logic supply current is measured with the digital outputs (DOUT and SSTRB) disabled (CS high). When the outputs are
active (CS low), the logic supply current depends on f
SCLK
, and on the static and capacitive load at DOUT and SSTRB.
Note 11: Measured at V
SUPPLY
+ 5% and V
SUPPLY
- 5% only.
Note 12: Measured at V
L
= 2.7V and V
L
= 3.6V.
(V
DD
= +5V ±5%, V
L
= 2.7V to 3.6V, V
SS
= 0V or -5V ±5%, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Acquisition Time t
ACQ
1.5 µs
DIN to SCLK Setup t
DS
100 ns
DIN to SCLK Hold t
DH
0 ns
SCLK Fall to Output Data Valid t
DO
C
LOAD
= 100pF 20 240 ns
CS Fall to Output Enable t
DV
C
LOAD
= 100pF 240 ns
CS Rise to Output Disable t
TR
C
LOAD
= 100pF 240 ns
CS to SCLK Rise Setup t
CSS
100 ns
CS to SCLK Rise Hold t
CSH
0 ns
SCLK Pulse Width High t
CH
200 ns
SCLK Pulse Width Low t
CL
C
LOAD
= 100pF 200 ns
SCLK Fall to SSTRB t
SSTRB
240 ns
CS Fall to SSTRB Output Enable
(Note 6)
t
SDV
External-clock mode only, C
LOAD
= 100pF 240 ns
CS Rise to SSTRB Output Disable
(Note 6)
t
STR
240 ns
SSTRB Rise to SCLK Rise
(Note 6)
t
SCK
0 ns
MAX1202/MAX1203 5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
www.maximintegrated.com
Maxim Integrated
│
6
TIMING CHARACTERISTICS