MAX189ACWE(2012) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX189ACWE
(Rev.:2012)

+5V, Low-Power, 12-Bit Serial ADCs

Maxim Integrated 

MAX187/ MAX189

+5V, Low-Power, 12-Bit Serial ADCs

ABSOLUTE MAXIMUM RATINGS

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

AIN to GND................................................-0.3V to (VDD + 0.3V)

REF to GND ...............................................-0.3V to (VDD + 0.3V)

Digital Inputs to GND.................................-0.3V to (VDD + 0.3V)

Digital Outputs to GND..............................-0.3V to (VDD + 0.3V)

SHDN to GND.............................................-0.3V to (VDD + 0.3V)

REF Load Current (MAX187) .........................4.0mA Continuous

REF Short-Circuit Duration (MAX187)............................. .......20s

DOUT Current..................................................................Q20mA

Continuous Power Dissipation (TA = +70NC)

8-Pin PDIP (derate 9.1mW/NC above +70NC)..............727mW

16-Pin Wide SO (derate 14.5mW/NC above 70NC).....1157mW

Operating Temperature Ranges

MAX187_C_ _/MAX189_C_ _..............................0NC to +70NC

MAX187_E_ _/MAX189_E_ _...........................-40NC to +85NC

Storage Temperature Range.............................-60NC to +150NC

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

Soldering Temperature (reflow) .......................................+260NC

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-

tion 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.

ELECTRICAL CHARACTERISTICS

(VDD = +5V ±5%; VGND = 0V; unipolar input mode; 75ksps, fCLK = 4.0MHz, external clock (50% duty cycle); MAX187—internal refer-

ence: VREF = 4.096V, 4.7µF capacitor at REF pin, or MAX189—external reference: VREF = 4.096V applied to REF pin, 4.7µF capacitor

at REF pin; TA = TMIN to TMAX; unless otherwise noted.)

PARAMETER

DC ACCURACY (Note 1)

Resolution

SYMBOL

CONDITIONS

MAX18_A

Relative Accuracy (Note 2)

MAX18_B

MAX18_C

Differential Nonlinearity

Offset Error

DNL

No missing codes over temperature

MAX18_A

MAX18_B/C

MAX187

Gain Error (Note 3)

MAX189A

MAX189B/C

Gain Temperature Coefficient

External reference, 4.096V

DYNAMIC SPECIFICATIONS (10kHz Sine Wave Input, 0 to 4.096VP-P, 75ksps)

Signal-to-Noise Plus

Distortion Ratio

SINAD

Total Harmonic Distortion

(Up to the 5th Harmonic)

THD

Spurious-Free Dynamic Range

Small-Signal Bandwidth

SFDR

Rolloff -3dB

Full-Power Bandwidth

CONVERSION RATE

Conversion Time

Track/Hold Acquisition Time

Throughput Rate

tCONV

tACQ

External clock, 4MHz, 13 clocks

MIN TYP MAX UNITS

Q0.8

12

Q½

Q1

Q2

Q1

Q1½

Q3

Q3

Q1

Q3

Bits

LSB

LSB

LSB

LSB

ppm/NC

70

dB

-80

dB

80

4.5

0.8

dB

MHz

MHz

5.5

8.5

Fs

1.5

Fs

75

ksps

Maxim Integrated

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