10-Bit, 105Msps, Single +3.3V, Low-Power

ADC with Internal Reference

16

______________________________________________________________________________________

Total Harmonic Distortion (THD)

THD is typically the ratio of the RMS sum of the first five

harmonics of the input signal to the fundamental itself.

This is expressed as:

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

component, 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.

THD

VVVV

V

=×

+++













20

2

2

3

2

4

2

5

2

1

log

()

HOLD

ANALOG

INPUT

SAMPLED

DATA (T/H)

T/H

TRACK

TRACK

CLK

Figure 10. T/H Aperture Timing

Pin Configuration

Chip Information

TRANSISTOR COUNT: 5684

PROCESS: CMOS

MAX1449

TQFP

TOP VIEW

32

28

29

30

31

25

26

27

10

13

15

14

16

11

12

9

17

18

19

20

21

22

T.P.

D5

D6

D7

D8

2

3

4

5

6

7

8

GND

IN-

IN+

GND

GND

COM

1

REFN