Electrical characteristics (continued), Timing characteristics (figures 1 and 2) – Rainbow Electronics MAX1189 User Manual
Page 4
MAX1179/MAX1187/MAX1189
16-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
4
_______________________________________________________________________________________
Note 1: Maximum specification is limited by automated test equipment.
Note 2: To ensure best performance, finish reading the data and wait t
BR
before starting a new acquisition.
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V ±5%, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER SUPPLIES
Analog Supply Voltage
AV
DD
4.75
5.25
V
Digital Supply Voltage
DV
DD
2.70
5.25
V
MAX1187
2.9
External reference,
135ksps
MAX1179/MAX1189
4.0
5.3
MAX1187
3.8
Analog Supply Current
I
AVDD
Internal reference,
135ksps
MAX1179/MAX1189
5.2
6.2
mA
Shutdown mode, I
AVDD
+ I
DVDD
(Note 1),
digital input = DV
DD
or 0V
0.5
5
µA
Shutdown Supply Current
I
SHDN
Standby mode
3.7
mA
Digital Supply Current
I
DVDD
0.75
mA
Power-Supply Rejection
AV
DD
= DV
DD
= +4.75V to +5.25V
3.5
LSB
TIMING CHARACTERISTICS (Figures 1 and 2)
(AV
DD
= +5V ±5V, DV
DD
= +2.7V to AV
DD
, external reference = +4.096V, C
REF
= 10µF, C
REFADJ
= 0.1µF, V
REFADJ
= AV
DD
, C
LOAD
= 20pF, TA = T
MIN
to T
MAX
.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Maximum Sampling Rate
f
S AM P LE ( M A X )
135
ksps
Acquisition Time
t
ACQ
2
µs
Conversion Time
t
CONV
4.7
µs
CS Pulse Width High
t
CSH
(Note 2)
40
ns
DV
DD
= +4.75V to +5.25V
40
CS Pulse Width Low
t
CSL
(Note 2)
DV
DD
= +2.7V to +5.25V
60
ns
R/C to CS Fall Setup Time
t
DS
0
ns
DV
DD
= +4.75V to +5.25V
40
R/C to CS Fall Hold Time
t
DH
DV
DD
= +2.7V to +5.25V
60
ns
DV
DD
= +4.75V to +5.25V
40
CS to Output Data Valid
t
DO
DV
DD
= +2.7V to +5.25V
80
ns
EOC Fall to CS Fall
t
DV
0
ns
DV
DD
= +4.75V to +5.25V
40
CS Rise to EOC Rise
t
EOC
DV
DD
= +2.7V to +5.25V
80
ns
DV
DD
= +4.75V to +5.25V
40
Bus Relinquish Time
t
BR
DV
DD
= +2.7V to +5.25V
80
ns