Timing characteristics (figures 8 and 9) – Rainbow Electronics MAX1111 User Manual
Page 5
MAX1110/MAX1111
+2.7V, Low-Power, Multichannel,
Serial 8-Bit ADCs
_______________________________________________________________________________________
5
ns
100
t
CSS
Figure 1, external clock mode only,
C
LOAD
= 100pF
ns
CS to SCLK Rise Setup
240
Figure 1, C
LOAD
= 100pF
ns
20
200
ns
0
t
CSH
CONDITIONS
CS to SCLK Rise Hold
240
t
DV
CS Fall to Output Enable
Figure 2, C
LOAD
= 100pF
ns
240
t
TR
CS Rise to Output Disable
t
SDV
CS Fall to SSTRB Output Enable
(Note 6)
Figure 2, external clock mode only,
C
LOAD
= 100pF
ns
240
t
STR
CS Rise to SSTRB Output
Disable (Note 6)
Figure 11, internal clock mode only
ns
0
t
SCK
SSTRB Rise to SCLK Rise
(Note 6)
ns
200
t
CH
SCLK Pulse Width High
ns
200
t
CL
SCLK Pulse Width Low
C
LOAD
= 100pF
ns
240
t
SSTRB
SCLK Fall to SSTRB
ns
0
t
DH
DIN to SCLK Hold
µs
1
t
ACQ
Track/Hold Acquisition Time
ns
100
t
DS
DIN to SCLK Setup
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
TIMING CHARACTERISTICS
(Figures 8 and 9)
(V
DD
= +2.7V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
Note 1:
Relative accuracy is the analog value’s deviation (at any code) from its theoretical value after the full-scale range is calibrated.
Note 2:
See
Typical Operating Characteristics.
Note 3:
V
REFIN
= 2.048V, 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 the analog inputs is from AGND to V
DD
.
Note 8:
External load should not change during the conversion for specified accuracy.
Note 9:
External reference at 2.048V, full-scale input, 500kHz external clock.
Note 10:
Measured as
|
V
FS
(2.7V) - V
FS
(3.6V)
|
.
Note 11:
1µF at REFOUT; internal reference settling to 0.5LSB.
ns
20
240
t
DO
SCLK Fall to Output Data Valid
Figure 1,
C
LOAD
= 100pF
MAX111_C/E
MAX111_M
External reference
20
Internal reference (Note 11)
µs
12
t
WAKE
Wake-Up Time
ms