MAX11040 datasheet(2/31 Pages) MAXIM

2 / 31 page

24-Bit, 4-Channel, Simultaneous-Sampling,

Cascadable, Sigma-Delta ADC

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VAVDD = +3.0V to +3.6V, VDVDD = +2.7V to VAVDD, fXIN CLOCK = 24.576MHz, fOUT = 16ksps, VREFIO = +2.5V (external), CREFIO =

CREF0 = CREF1 = CREF2 = CREF3 = 1µF to AGND, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

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.

AVDD to AGND ........................................................-0.3V to +4V

DVDD to DGND ......................................-0.3V to (VAVDD + 0.3V)

AGND to DGND.....................................................-0.3V to +0.3V

DIN, SCLK, CS, XIN, SYNC, DRDYIN,

CASCIN to DGND..............................-0.3V to (VDVDD + 0.3V)

DOUT, DRDYOUT, CASCOUT, CLKOUT,

XOUT to DGND..................................-0.3V to (VDVDD + 0.3V)

FAULT, OVRFLW to DGND ...................................-0.3V to +4.0V

AIN_+ to AIN_- ......................................................-6.0V to +6.0V

AIN_ _to AGND (VAVDD

≥ 3V, VDVDD ≥ 2.7V, FAULTDIS = 0,

SHDN = 0, fXIN CLOCK

≥ 20MHz)....................-6.0V to +6.0V

AIN_ _ to AGND (VAVDD < 3V or VDVDD < 2.7V or

FAULTDIS = 1 or SHDN = 1 or

fXIN CLOCK < 20MHz)........................................-3.5V to +3.5V

REFIO, REF_ to AGND............................-0.3V to (VAVDD + 0.3V)

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

Continuous Power Dissipation (TA = +70°C)

38-Pin TSSOP (derated 13.7mW/°C above +70°C) ...1096mW

Operating Temperature Range .........................-40°C to +105°C

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DC ACCURACY (Note 2)

Resolution

Bits

Differential Nonlinearity

DNL

24-bit no missing code

0.1

LSB

TA = +25°C and +105°C

0.001

0.004

Integral Nonlinearity (Note 3)

INL

TA = -40°C

0.006

% FS

Offset Error

-1

Gain Error

(Note 4)

-1

% FS

Offset-Error Drift

(Note 5)

0.5

ppm/°C

Gain-Error Drift

(Note 5)

ppm/°C

Change in Gain Error vs. fOUT

fOUT = 0.25ksps to 64ksps

< 0.025

% FS

Channel-to-Channel Gain Matching

0.03

% FS

DYNAMIC SPECIFICATIONS (62.5Hz sine-wave input, 2.17VP-P)

Signal-to-Noise Ratio

SNR

(Note 6)

103

106

TA = +25°C and +105°C

-94

Total Harmonic Distortion

THD

TA = -40°C

-90

TA = +25°C and +105°C

Signal-to-Noise Plus Distortion

SINAD

TA = -40°C

TA = +25°C and +105°C

100

Spurious-Free Dynamic Range

SFDR

TA = -40°C

0.1% FS input

0.25

Relative Accuracy (Note 7)

6.0% FS input

0.005

Bandwidth

-3dB

3.4

kHz

Latency

(Note 8)

405

µs

Passband Flatness

From DC to 1.4kHz

< 0.1

Amplitude-Dependent Phase Error

FS vs. 0.1% FS

< 0.01

0.12

Deg

Channel-to-Channel Phase Matching

0.0001

Deg

Phase-Error Drift

0.001

Deg

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