Datasheet

MAX1403
+3V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
_______________________________________________________________________________________ 5
2.4576MHz
1.024MHz
Buffers off
Buffers off
Buffers on
2.4576MHz
1.024MHz
370 420
Buffers off
Buffers off
Buffers on
Normal mode,
MF1 = 0,
MF0 = 0
610 700
250 300
Buffers on 610
Buffers on
2X mode,
MF1 = 0,
MF0 = 1
1.2 1.5
CONDITIONS
PD bit = 1, external clock stopped
0.42 0.55
245
2.4576MHz
1.024MHz
Buffers off
Buffers off
Buffers on
2.4576MHz
1.024MHz
1.2
Buffers off
Buffers off
Buffers on
4X mode,
MF1 = 1,
MF0 = 0
µA
4.8 6
110
1.8 2.2
Buffers on 4.8
Buffers on
8X mode,
MF1 = 1,
MF0 = 1
mA
4.8 6
I
V+
V+ Current
1.8 2.2
1.8
0.42
V+ Standby Current (Note 19)
0.08
70 200
2X mode,
MF1 = 0, MF0 = 1
0.17 0.35
Normal mode,
MF1 = 0, MF0 = 0
PD bit = 1, external clock stopped 110
150 300
µAV
DD
Standby Current (Note 19)
µA
1.024MHz
2.4576MHz
1.024MHz
175 210
2.4576MHz
0.15
0.11
8X mode,
MF1 = 1, MF0 = 1
0.32 0.50
mA
4X mode,
MF1 = 1, MF0 = 0
0.22 0.40
1.024MHz
2.4576MHz
I
DD
Digital Supply Current
1.024MHz
2.4576MHz
UNITSMIN TYP MAXSYMBOLPARAMETER
µA
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +2.7V to +3.6V, V
DD
= +2.7V to +3.6V, V
REFIN+
= +1.25V, REFIN- = AGND, f
CLKIN
= 2.4576MHz, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
ANALOG POWER-SUPPLY CURRENT (Measured with digital inputs at either DGND or V
DD
, external CLKIN, burn-out and
transducer excitation currents disabled, X2CLK = 0, CLK = 0 for 1.024MHz, CLK = 1 for 2.4576MHz.)
DIGITAL POWER-SUPPLY CURRENT (Measured with digital inputs at either DGND or V
DD
, external CLKIN, burn-out and
transducer excitation currents disabled, X2CLK = 0, CLK = 0 for 1.024MHz, CLK = 1 for 2.4576MHz.)