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MAX1402_07 Datasheet, PDF (5/38 Pages) Maxim Integrated Products – +5V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC
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+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
ELECTRICAL CHARACTERISTICS (continued)
(V+ = +5V ±5%, VDD = +2.7V to +5.25V, VREFIN+ = +2.50V, REFIN- = AGND, fCLKIN = 2.4576MHz, TA = TMIN to TMAX, unless other-
wise noted. Typical values are at TA = +25°C.)
PARAMETER
POWER REQUIREMENTS
V+ Voltage
VDD Voltage
Power-Supply Rejection V+
(Note 16)
SYMBOL
CONDITIONS
V+ For specified performance
VDD
PSR
MIN TYP MAX UNITS
4.75
5.25
V
2.7
5.25
V
(Note 17)
dB
ANALOG POWER-SUPPLY CURRENT (Measured with digital inputs at either DGND or VDD, external CLKIN, burn-out and auxil-
iary currents disabled, X2CLK = 0, CLK = 0 for 1.024MHz, CLK = 1 for 2.4576MHz.)
V+ Standby Current (Note 18)
PD bit = 1, external clock stopped
1
10
µA
Normal mode,
MF1 = 0,
MF0 = 0
Buffers off
1.024MHz
Buffers on
Buffers off
2.4576MHz
Buffers on
175
210
370
420
250
300
µA
610
700
V+ Current
2X mode,
MF1 = 0,
MF0 = 1
IV+
4X mode,
MF1 = 1,
MF0 = 0
Buffers off
1.024MHz
Buffers on
Buffers off
2.4576MHz
Buffers on
Buffers off
1.024MHz
Buffers on
Buffers off
2.4576MHz
Buffers on
245
610
0.42 0.55
1.2
1.5
0.42
1.2
1.8
2.2
mA
4.8
6
8X mode,
MF1 = 1,
MF0 = 1
Buffers off
1.024MHz
Buffers on
Buffers off
2.4576MHz
Buffers on
1.8
4.8
1.8
2.2
4.8
6
DIGITAL POWER-SUPPLY CURRENT (Measured with digital inputs at either DGND or VDD, external CLKIN, burn-out and auxiliary
currents disabled, X2CLK = 0, CLK = 0 for 1.024MHz, CLK = 1 for 2.4576MHz.)
VDD Standby Current (Note 18)
3.3V Digital Supply Current
5V Digital Supply Current
PD bit = 1, external clock stopped
Normal mode,
MF1 = 0, MF0 = 0
1.024MHz
2.4576MHz
2X mode,
MF1 = 0, MF0 = 1
IDD
4X mode,
MF1 = 1, MF0 = 0
1.024MHz
2.4576MHz
1.024MHz
2.4576MHz
8X mode,
MF1 = 1, MF0 = 1
1.024MHz
2.4576MHz
Normal mode,
MF1 = 0, MF0 = 0
IDD
2X mode,
MF1 = 0, MF0 = 1
1.024MHz
2.4576MHz
1.024MHz
2.4576MHz
1
10
µA
70
200
µA
150
300
0.08
0.17 0.35
0.11
mA
0.22 0.40
0.15
0.32 0.45
115
300
µA
235
450
0.13
mA
0.28
0.5
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