MAX1403 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1403

+3V, 18-Bit, Low-Power, Multichannel, Oversampling (Sigma-Delta) ADC

Maxim Integrated 

+3V, 18-Bit, Low-Power, Multichannel,

Oversampling (Sigma-Delta) ADC

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +2.7V to +3.6V, VDD = +2.7V to +3.6V, VREFIN+ = +1.25V, REFIN- = AGND, fCLKIN = 2.4576MHz, TA = TMIN to TMAX, unless

otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

OFFSET DAC

Offset DAC Range (Note 7)

Unipolar mode

Bipolar mode

-116.7

-58.35

116.7

%FSR

58.35

Offset DAC Resolution

Unipolar mode

Bipolar mode

16.7

%FSR

8.35

Offset DAC Full-Scale Error

Gain = 1, 2, 4, 8, 16, 32, 64 -2.5

Input referred

Gain = 128

-3.5

+2.5

+3.5

%FSR

Offset DAC Zero-Scale Error

0

%FSR

Additional Noise from Offset

DAC (Note 8)

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 9)

150

dB

For filter notch 60Hz, ±0.02 · fNOTCH,

MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz (Note 9)

150

Normal Mode 50Hz Rejection

(Note 9)

NMR

For filter notch 50Hz, ±0.02 · fNOTCH,

MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz

100

dB

Normal Mode 60Hz Rejection

(Note 9)

NMR

For filter notch 60Hz, ±0.02 · fNOTCH,

MF1 = 0, MF0 = 0, fCLKIN = 2.4576MHz

100

dB

Common-Mode Voltage Range

(Note 10)

REFIN and AIN for BUFF = 0

VAGND

V+

V

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 11)

AIN Input Current (Note 11)

AIN Input Capacitance

(Notes 12)

AIN Differential Voltage Range

(Note 13)

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

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