MAX1295ACEI datasheet(2/20 Pages) MAXIM

2 / 20 page

265ksps, +3V, 6-/2-Channel, 12-Bit ADCs

with +2.5V Reference and Parallel Interface

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD = +2.7V to +3.6V, COM = GND, REFADJ = VDD, VREF = +2.5V, 4.7µF capacitor at REF pin, fCLK = 4.8MHz (50% duty cycle),

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–CH5, COM to GND ............................-0.3V to (VDD + 0.3V)

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

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

Digital Outputs (D0–D11, INT) to GND.......-0.3V to (VDD + 0.3V)

Continuous Power Dissipation (TA = +70°C)

24-Pin QSOP (derate 9.5mW/°C above +70°C)..........762mW

28-Pin QSOP (derate 8.00mW/°C above +70°C)........667mW

Operating Temperature Ranges

MAX1295_C_ _ /MAX1297_C_ _ ........................0°C to +70°C

MAX1295_E_ _ /MAX1297_E_ _ ......................-40°C to +85°C

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

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

External acquisition or external clock mode

Internal acquisition/internal clock mode

MAX129_A

External acquisition/internal clock mode

External clock mode

-3dB rolloff

SINAD > 68dB

fIN = 125kHz (Note 4)

fIN1 = 49kHz, fIN2 = 52kHz

MAX129_B

No missing codes over temperature

CONDITIONS

Aperture Delay

625

tACQ

Track/Hold Acquisition Time

3.2

3.6

4.1

2.5

3.0

3.5

µs

3.3

tCONV

Conversion Time (Note 5)

MHz

Full-Power Bandwidth

kHz

250

Full-Linear Bandwidth

-78

Channel-to-Channel Crosstalk

IMD

Intermodulation Distortion

SFDR

Spurious-Free Dynamic Range

Total Harmonic Distortion

(including 5th-order harmonic)

-78

THD

±0.5

INL

Relative Accuracy (Note 2)

Bits

RES

Resolution

SINAD

Signal-to-Noise Plus Distortion

LSB

±0.2

Channel-to-Channel Offset

Matching

ppm/°C

±2.0

Gain Temperature Coefficient

LSB

±1

LSB

±1

DNL

Differential Nonlinearity

LSB

±4

Offset Error

LSB

±4

Gain Error (Note 3)

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

Internal acquisition/internal clock mode

External acquisition or external clock mode

<200

<50

Aperture Jitter

MHz

0.1

4.8

fCLK

External Clock Frequency

Duty Cycle

DC ACCURACY (Note 1)

DYNAMIC SPECIFICATIONS (fIN(sine-wave) = 50kHz, VIN = 2.5Vp-p, 265ksps, external fCLK = 4.8MHz, bipolar input mode)

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