MAX1080/MAX1081
300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
6 _______________________________________________________________________________________
V
DD1
=
V
DD2
=
3.6V
I
SOURCE
= 0.5mA
V
DD1
= V
DD2
= 2.7V to 3.6V, midscale input
CONDITIONS
mA
2.5 3.5
I
VDD1
+
I
VDD2
Supply Current
V2.7 3.6
V
DD1,
V
DD2
VV
DD2
- 0.5VV
OH
Output Voltage High
Positive Supply Voltage
(Note 9)
1.3 2.0
Normal operating mode (Note 10)
Reduced-power mode (Note 11)
0.9 1.5
Fast power-down mode (Note 11)
Full power-down mode (Note 11) µA
210
mV±0.5 ±2.0PSRPower-Supply Rejection
UNITSMIN TYP MAXSYMBOLPARAMETER
I
SINK
= 5mA V0.4V
OL
Output Voltage Low
CS = 3V
µA±10I
L
Three-State Leakage Current
CS = 3V
pF15C
OUT
Three-State Output Capacitance
ELECTRICAL CHARACTERISTICS—MAX1081 (continued)
(V
DD1
= V
DD2
= +2.7V to +3.6V, COM = GND, f
SCLK
= 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), external
+2.5V at REF, REFADJ = V
DD1
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
TIMING CHARACTERISTICS–MAX1080
(Figures 1, 2, 6, 7; V
DD1
= V
DD2
= +4.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF
CONDITIONS
ns
100
t
CSW
CS Pulse Width High
ns
65
t
STE
CS Fall to SSTRB Enable
ns
65
t
DOE
CS Fall to DOUT Enable
ns
10 65
t
STD
CS Rise to SSTRB Disable
ns
10 65
t
DOD
CS Rise to DOUT Disable
ns
80
t
STV
SCLK Rise to SSTRB Valid
ns
80
t
DOV
SCLK Rise to DOUT Valid
ns
62
t
CL
SCLK Pulse Width Low
ns
62
t
CH
ns
156
t
CP
SCLK Period
SCLK Pulse Width High
ns
10 20
t
STH
SCLK Rise to SSTRB Hold
ns
10 20
t
DOH
SCLK Rise to DOUT Hold
ns
35
t
CS1
CS Rise to SCLK Rise Ignore
ns
35
t
CSO
SCLK Rise to CS Fall Ignore
ns
35
t
DS
DIN to SCLK Setup
ns
0
t
DH
DIN to SCLK Hold
ns
35
t
CSS
CS Fall to SCLK Rise Setup
ns
0
t
CSH
SCLK Rise to CS Rise Hold
UNITSMIN TYP MAXSYMBOLPARAMETER
DIGITAL OUTPUTS (DOUT, SSTRB)
POWER SUPPLY
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