MX7705 datasheet(2/34 Pages) MAXIM

2 / 34 page

16-Bit, Low-Power, 2-Channel,

Sigma-Delta ADC

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = 3V or 5V, GND = 0, VREF+ = 1.225V for VDD = 3V and VREF+ = 2.5V for VDD = 5V, VREF- = GND, external fCLKIN =

2.4576MHz, CLKDIV bit = 0, CREF+ to GND = 0.1µF, CREF- to GND = 0.1µF, TA = TMIN to TMAX, unless otherwise noted.)

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.

VDD to GND ..............................................................-0.3V to +6V

All Other Pins to GND.................................-0.3V to (VDD + 0.3V)

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

Continuous Power Dissipation (TA = +70

°C)

PDIP (derate 10.5mW/

°C above +70°C)......................842mW

TSSOP (derate 9.4mW/

°C above +70°C) ....................755mW

Wide SO (derate 9.5mW/

°C above +70°C)..................762mW

Operating Temperature Range ..........................-40

°C to +85°C

Storage Temperature Range .............................-60

°C to +150°C

Junction Temperature ......................................................+150°C

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

°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC ACCURACY

Resolution (No Missing Codes)

Bits

Output Noise

Tables 1, 3

µV

Integral Nonlinearity

INL

Gain = 1, unbuffered

±0.003

%FSR

Unipolar Offset Error

After calibration

(Note 1)

µV

Unipolar Offset Drift

(Note 2)

0.5

µV/°C

Bipolar Zero Error

After calibration

(Note 1)

µV

Gain = 1 to 4

0.5

Bipolar Zero Drift (Note 2)

Gain = 8 to 128

0.1

µV/°C

Positive Full-Scale Error

After calibration

(Notes 1, 3)

µV

Full-Scale Drift

(Notes 2, 4)

0.5

µV/°C

Gain Error

After calibration

(Notes 1, 5)

µV

Gain Drift

(Notes 2, 6)

0.5

ppm of

FSR/°C

Bipolar Negative Full-Scale Error

After calibration

±0.003

%FSR

Gain = 1 to 4

Bipolar Negative Full-Scale Drift

(Note 2)

Gain = 8 to 128

0.6

µV/°C

ANALOG INPUTS (AIN1+, AIN1-, AIN2+, AIN2-)

Unipolar input range

VREF /

GAIN

AIN Differential Input Voltage

Range (Note 7)

Bipolar input range

-VREF /

GAIN

VREF /

GAIN

Unbuffered

GND -

30mV

VDD +

30mV

AIN Absolute Input Voltage

Range (Note 8)

Buffered

GND +

50mV

VDD -

1.5V

AIN DC Leakage Current

Unselected input channel

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