MAX1400
+5V, 18-Bit, Low-Power, Multichannel,
Oversampling (Sigma-Delta) ADC
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = +5V ±5%, V
DD
= +2.7V to +5.25V, V
REFIN+
= +2.50V, REFIN- = AGND, f
CLKIN
= 2.4576MHz, T
A
= T
MIN
to T
MAX
, unless other-
wise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V+ to AGND, DGND .................................................-0.3V to +6V
V
DD
to AGND, DGND...............................................-0.3V to +6V
AGND to DGND.....................................................-0.3V to +0.3V
Analog Inputs to AGND................................-0.3V to (V+ + 0.3V)
Analog Outputs to AGND .............................-0.3V to (V+ + 0.3V)
Reference Inputs to AGND...........................-0.3V to (V+ + 0.3V)
CLKIN and CLKOUT to DGND...................-0.3V to (V
DD
+ 0.3V)
All Other Digital Inputs to DGND..............................-0.3V to +6V
All Digital Outputs to DGND.......................-0.3V to (V
DD
+ 0.3V)
Maximum Current Input into Any Pin ..................................50mA
Continuous Power Dissipation (T
A
= +70°C)
28-Pin SSOP (derate 9.52mW/°C above +70°C) ........524mW
Operating Temperature Ranges
MAX1400CAI .....................................................0°C to +70°C
MAX1400EAI...................................................-40°C to +85°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Bipolar Negative Full-Scale Drift
0.3
µV/°C
For gains of 8, 16, 32, 64, 128
PARAMETER SYMBOL MIN TYP MAX UNITS
Unipolar Offset Error -1 +2 %FSR
Nominal Gain 0.98
Integral Nonlinearity INL -0.0015 0.0015 %FSR
Output Noise Table 16
0.5
Unipolar Offset Drift
0.3
µV/°C
Bipolar Zero Error -2.0 +2.0 %FSR
0.8
Noise-Free Resolution 16 Bits
Bipolar Zero Drift
0.3
Positive Full-Scale Error
(Note 2)
-2.5 +2.5
%FSR
Full-Scale Drift (Note 3)
0.8
0.3
µV/°C
-2 +2
Gain Error (Note 4)
-3 +3
%FSR
1
Gain-Error Drift (Note 5)
5
ppm/°C
-2.5 +2.5
%FSR
0.8
CONDITIONS
For gains of 8, 16, 32, 64, 128
Relative to nominal offset of 1% FSR
For gains of 1, 2, 4, 8, 16, 32, 64
(Note 1)
Bipolar mode, filter settings with FS1 = 0
Depends on filter setting and selected gain
For gains of 1, 2, 4
For gains of 8, 16, 32, 64, 128
For gains of 1, 2, 4
For gains of 1, 2, 4
For gains of 8, 16, 32, 64, 128
For gains of 1, 2, 4, 8, 16, 32, 64
For gain of 128
For gains of 1, 2, 4, 8, 16, 32, 64
For gain of 128
For gains of 1, 2, 4, 8, 16, 32, 64
No missing codes guaranteed by design;
for filter settings with FS1 = 0
For gains of 1, 2, 4
µV/°C
For gain of 128 -3.5 +3.5
Bipolar Negative Full-Scale Error
-3.5 +3.5For gain of 128
STATIC PERFORMANCE
