Rainbow-electronics MAX1446 User Manual download pdf (Page 16)

MAX1446

10-Bit, 60Msps, +3.0V, Low-Power

ADC with Internal Reference

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Total Harmonic Distortion (THD)

THD is typically the ratio of the rms sum of the input

signal’s first five harmonics to the fundamental itself.

This is expressed as:

where V

is the fundamental amplitude, and V

through

are the amplitudes of the 2nd- through 5th-order

harmonics.

Spurious-Free Dynamic Range (SFDR)

SFDR is the ratio expressed in decibels of the rms

amplitude of the fundamental (maximum signal compo-

nent) to the rms value of the next largest spurious com-

ponent, excluding DC offset.

Intermodulation Distortion (IMD)

The two-tone IMD is the ratio expressed in decibels of

either input tone to the worst 3rd-order (or higher) inter-

modulation products. The individual input tone levels

are at -6.5dB full scale, and their envelope is at -0.5dB

full scale.

Chip Information

TRANSISTOR COUNT: 5684

PROCESS: CMOS

HOLD

ANALOG

INPUT

SAMPLED

DATA (T/H)

T/H

TRACK TRACK

CLK

Figure 10. T/H Aperture Timing

Pin Configurations (continued)

MAX1446

TQFP

TOP VIEW

32 28

293031

REFIN

GND

REFOUT

REFP

1611 12

GND

CLK

GND

OGND

24 D4

T.P.

8GND

IN-

IN+

GND

COM

1REFN

THD VVVVV=× +++

()

20 1

log /

1 2 ... 11 12 13 14 15 16

ADC with Internal Reference 1

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