English
Language : 

MAX1402 Datasheet, PDF (3/40 Pages) Maxim Integrated Products – +5V, 18-Bit, Low-Power, Multichannel, Oversampling Sigma-Delta ADC
◁
+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
OFFSET DAC
Offset DAC Range (Note 6)
Offset DAC Resolution
Offset DAC Full-Scale Error
Offset DAC Zero-Scale Error
SYMBOL
CONDITIONS
Unipolar mode
Bipolar mode
Unipolar mode
Bipolar mode
Input Referred
MIN TYP MAX UNITS
-116.7
-58.35
116.7
%FSR
58.35
16.7
%FSR
8.35
-2.5
2.5 %FSR
0
%FSR
Additional Noise from Offset
DAC (Note 7)
DAC code = 0000
0
µVRMS
ANALOG INPUTS/REFERENCE INPUTS (Specifications for AIN and REFIN, unless otherwise noted.)
At DC
90
Common-Mode Rejection
CMR
For filter notch 50Hz, ±0.02 · fNOTCH,
MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz (Note 8)
150
dB
For filter notch 60Hz, ±0.02 · fNOTCH,
MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz (Note 8)
150
Normal Mode 50Hz Rejection
(Note 8)
NMR
For filter notch 50Hz, ±0.02 · fNOTCH,
MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz
100
dB
Normal Mode 60Hz Rejection
(Note 8)
NMR
For filter notch 60Hz, ±0.02 · fNOTCH,
MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz
100
dB
Common-Mode Voltage Range
(Note 9)
REFIN and AIN for BUFF = 0
VAGND
V+
dB
Absolute Input Voltage Range
REFIN and AIN for BUFF = 0
VAGND
- 30mV
V+
+ 30mV
V
Absolute and Common-Mode
AIN Voltage Range
BUFF = 1
VAGND
+ 200mV
V+
- 1.5
V
DC Input Leakage Current
(Note 10)
AIN Input Current (Note 10)
AIN Input Capacitance
(Notes 11)
AIN Differential Voltage Range
(Note 12)
REFIN and AIN for
BUFF = 0
TA = +25°C
TA = TMIN to TMAX
BUFF = 1
Gain = 1
BUFF = 0
Gain = 2
Gain = 4
Gain = 8, 16, 32, 64, 128
BUFF = 1, all gains
Unipolar input range (U/B bit = 1)
Bipolar input range (U/B bit = 0)
40
pA
10
nA
10
nA
34
38
45
pF
60
30
0 to VREF / gain
V
±VREF / gain
_______________________________________________________________________________________ 3
 ▷