C
LOAD
= 100pF
MAX1204
5V, 8-Channel, Serial, 10-Bit ADC
with 3V Digital Interface
6
Maxim Integrated
External clock mode only, C
LOAD
= 100pF ns240
C
LOAD
= 100pF ns
ns20 240t
DO
SCLK Fall to Output Data Valid
CONDITIONS
240t
DV
CS Fall to Output Enable
C
LOAD
= 100pF ns240t
TR
CS Rise to Output Disable
t
SDV
CS Fall to SSTRB Output Enable
(Note 6)
External clock mode only, C
LOAD
= 100pF ns240t
STR
CS Rise to SSTRB Output
Disable (Note 6)
Internal clock mode only ns0t
SCK
SSTRB Rise to SCLK Rise
(Note 6)
ns0t
DH
DIN to SCLK Hold
µs1.5t
ACQ
Acquisition Time
ns100t
DS
DIN to SCLK Setup
UNITSMIN TYP MAXSYMBOLPARAMETER
TIMING CHARACTERISTICS
(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.)
ns100t
CSS
CS to SCLK Rise Setup
ns0t
CSH
CS to SCLK Rise Hold
ns200t
CH
SCLK Pulse Width High
ns200t
CL
SCLK Pulse Width Low
C
LOAD
= 100pF ns240t
SSTRB
SCLK Fall to SSTRB
C
LOAD
= 100pF
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
calibrated.
Note 3: Internal reference, 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 subject to production testing.
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 (Figure 12c);
REFADJ = GND.
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.
