%FSR

+5V, 18-Bit, Low-Power, Multichannel,

Oversampling (Sigma-Delta) ADC

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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

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)

All Other Digital Inputs to DGND..............................-0.3V to +6V

Maximum Current Input into Any Pin ..................................50mA

28-Pin SSOP (derate 9.52mW/°C above +70°C) ........524mW

Operating Temperature Ranges

MAX1402CAI .....................................................0°C to +70°C

MAX1402EAI...................................................-40°C to +85°C

Storage Temperature Range .............................-60°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

µV/°C

For gains of 1, 2, 4

No missing codes guaranteed by design;

for filter settings with FS1 = 0

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

For gain of 128

For gains of 1, 2, 4

For gains of 1, 2, 4, 8, 16, 32, 64

For gains of 8, 16, 32, 64, 128

For gains of 1, 2, 4

Depends on filter setting and selected gain

Bipolar mode, filter settings with FS1 = 0

Relative to nominal of 1% FSR

For gains of 8, 16, 32, 64, 128

CONDITIONS

0.8

%FSR

-2.5

2.5

Bipolar Negative Full-Scale Error

ppm/°C

5

Gain-Error Drift (Note 5)

1

%FSR

-3

3

Gain Error (Note 4)

-2

2

%FSR

-3.5

3.5

-2.5

2.5

Positive Full-Scale Error

(Note 2)

0.3

Bipolar Zero Drift

Bits

16

Noise-Free Resolution

0.8

%FSR

-2.0

2.0

Bipolar Zero Error

µV/°C

0.3

Unipolar Offset Drift

0.5

Table 16

Output Noise

%FSR

-0.0015

0.0015

INL

Integral Nonlinearity

0.98

Nominal Gain (Note 1)

%FSR

-1

2

Unipolar Offset Error

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

For gains of 8, 16, 32, 64, 128

µV/°C

0.3

Bipolar Negative Full-Scale Drift

For gains of 8, 16, 32, 64, 128

For gains of 1, 2, 4

µV/°C

0.3

0.8

Full-Scale Drift (Note 3)

For gain of 128

-3.5

3.5

STATIC PERFORMANCE