Rainbow-electronics MAX1444 Bedienungsanleitung PDF herunterladen (Seite 2)

MAX1444

10-Bit, 40Msps, +3.0V, Low-Power

ADC with Internal Reference

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +3.0V, OV

= +2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V

REFIN

= +2.048V, REFOUT con-

nected to REFIN through a 10kΩ resistor, V

= 2Vp-p (differential w.r.t. COM), C

= 10pF at digital outputs, f

CLK

= 40MHz (50% duty

cycle), T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at T

= +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.

, OV

to GND ...............................................-0.3V to +3.6V

OGND to GND.......................................................-0.3V to +0.3V

IN+, IN- to GND........................................................-0.3V to V

REFIN, REFOUT, REFP,

REFN, and COM to GND.........................-0.3V to (V

+ 0.3V)

OE, PD, CLK to GND..................................-0.3V to (V

+ 0.3V)

D9–D0 to GND.........................................-0.3V to (OV

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

32-Pin TQFP (derate 11.1mW/°C above +70°C)...........889mW

Operating Temperature Range ...........................-40°C to +85°C

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

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DC ACCURACY

Resolution 10 bits

Integral Nonlinearity INL f

= 7.51MHz ±0.6 ±1.9 LSB

Differential Nonlinearity DNL

= 7.51MHz, no missing codes

guaranteed

±0.4 ±1.0 LSB

Offset Error <±0.1 ±1.7 % FS

Gain Error 0 ±2% FS

ANALOG INPUT

Input Differential Range V

DIFF

Differential or single-ended inputs ±1.0 V

Common-Mode

Voltage Range

COM

±0.5

Input Resistance R

Switched capacitor load 50 kΩ

Input Capacitance C

5pF

CONVERSION RATE

Maximum Clock Frequency f

CLK

40 MHz

Data Latency 5.5 cycles

DYNAMIC CHARACTERISTICS (f

CLK

= 40MHz, 4096-point FFT)

= 7.51MHz 57.5 59.5

= 19.91MHz 57 59.5

Signal-To-Noise Ratio SNR

= 39.9MHz (Note 1) 58.5

= 7.51MHz 57 59.4

= 19.91MHz 56.7 59

Signal-To-Noise And Distortion

(Up to 5th harmonic)

SINAD

= 39.9MHz (Note 1) 58.3

= 7.51MHz 67 75

= 19.91MHz 66 74Spurious-Free Dynamic Range SFDR

= 39.9 MHz (Note 1) 72.5

dBc

1 2 3 4 5 6 7 ... 17 18

ADC with Internal Reference 1

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