Rainbow-electronics MAX1273 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX1272/MAX1273

Fault-Protected, 12-Bit ADCs

with Software-Selectable Input Range

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

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

AIN to GND (MAX1272) ...................................................... ±12V

AIN to GND (MAX1273) ........................................................ ±6V

DOUT, CS, DIN, SCLK, REF to GND..........-0.3V to (V

+ 0.3V)

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

Continuous Power Dissipation (T

= +70°C)

8-Pin Plastic DIP (derate 9.1mW/°C above +70°C) ......727mW

8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW

Operating Temperature Ranges

MAX127_ C_ _ .....................................................0°C to +70°C

MAX127_ E_ _...................................................-40°C to +85°C

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

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

Junction Temperature .....................................................+150°C

ELECTRICAL CHARACTERISTICS

= 4.75V to 5.25V, unipolar/bipolar input range, external reference mode, V

REF

= 4.096V, C

REF

= 1.0µF, f

SCLK

= 1.4MHz,

50% duty cycle, C

LOAD

= 50pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETERS SYMBOL CONDITIONS MIN TYP MAX UNITS

ACCURACY (Note 1)

Resolution 12 Bits

Integral Nonlinearity INL ±0.3 ±1.0 LSB

Differential Nonlinearity DNL No missing codes over temperature ±0.35 ±1.00 LSB

Unipolar ±5

Offset Error

Bipolar ±10

LSB

Unipolar ±10

Gain Error (Note 2)

Bipolar ±10

LSB

Unipolar ±3

Gain Error Temperature

Coefficient (Note 2)

Bipolar ±5

ppm/°C

DYNAMIC SPECIFICATIONS (10kHz sine-wave input, ±10V

P-P

(MAX1272), or ±4.096V

P-P

(MAX1273), f

SAMPLE

= 87ksps)

Signal-to-Noise + Distortion Ratio SINAD 69 72 dB

Total Harmonic Distortion THD Up to the 5th harmonic -87 -78 dB

Spurious-Free Dynamic Range SFDR 80 88 dB

Aperture Delay t

15 ns

Aperture Jitter t

<50 ps

ANALOG INPUT

T/H Acquisition Time t

ACQ

2.85 µs

1 2 3 4 5 6 7 ... 19 20

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