MAX144_05 datasheet(2/16 Pages) MAXIM

2 / 16 page

+2.7V, Low-Power, 2-Channel, 108ksps,

Serial 12-Bit ADCs in 8-Pin µMAX

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = +2.7V to +5.25V, VREF = 2.5V, 0.1µF capacitor at REF, fSCLK = 2.17MHz, 16 clocks/conversion cycle (108ksps),

CH- = GND for MAX145, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

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

CH0, CH1 (CH+, CH-) to GND ................. -0.3V to (VDD + 0.3V)

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

Digital Inputs to GND. ............................................. -0.3V to +6V

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

DOUT Sink Current ........................................................... 25mA

Continuous Power Dissipation (TA = +70°C)

µMAX (derate 4.1mW/°C above +70°C) .................... 330mW

Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW

CERDIP (derate 8.00mW/°C above +70°C) . .............. 640mW

Operating Temperature Ranges (TA)

MAX144/MAX145_C_A .......................................0°C to +70°C

MAX144/MAX145_E_A. ...................................-40°C to +85°C

MAX144/MAX145_M_A ................................ -55°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

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

MAX14_A

MAX14_B

No missing codes over temperature

CONDITIONS

LSB

±0.5

INL

Relative Accuracy (Note 2)

Bits

RES

Resolution

±1

LSB

±0.75

DNL

Differential Nonlinearity

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

ppm/°C

±0.8

Gain Temperature Coefficient

LSB

±3

LSB

±3

Offset Error

Gain Error

LSB

±0.05

Channel-to-Channel Offset

Matching

LSB

±0.05

Channel-to-Channel Gain

Matching

-3dB rolloff

fIN = 65kHz, VIN = 2.5Vp-p (Note 4)

External clock, fSCLK = 2.17MHz,

16 clocks/conversion cycle

MHz

1.0

Full-Power Bandwidth

MHz

2.25

-85

Channel-to-Channel Crosstalk

Small-Signal Bandwidth

µs

7.4

tCONV

Conversion Time (Note 5)

Total Harmonic Distortion

(including 5th-order harmonic)

SINAD

Signal-to-Noise Plus

Distortion Ratio

-80

THD

SFDR

Spurious-Free Dynamic Range

Internal clock mode, for data transfer only

External clock mode

Internal clock

MHz

0.1

2.17

fSCLK

<50

Aperture Jitter

Serial Clock Frequency

µs

2.5

tACQ

T/H Acquisition Time

Aperture Delay

DC ACCURACY (Note 1)

DYNAMIC SPECIFICATIONS (fIN(sine-wave) = 10kHz, VIN = 2.5Vp-p, 108ksps, fSCLK = 2.17MHz, CH- = GND for MAX145)

CONVERSION RATE

(Note 3)

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