MAX1186 datasheet(19/21 Pages) MAXIM | Dual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

Part No.	MAX1186

Description	Dual 10-Bit, 40Msps, 3V, Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual 10-Bit, 40Msps, 3V, Low-Power ADC with

Internal Reference and Multiplexed Parallel Outputs

______________________________________________________________________________________

19

Total Harmonic Distortion (THD)

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

harmonics of the input signal to the fundamental itself.

This is expressed as:

where V1 is the fundamental amplitude, and V2 through

V5 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

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

VVV

V

=×

++

+













20

10

2

3

2

4

2

5

2

1

log

0

°

90

°

÷8

DOWNCONVERTER

MAX2451

INA+

A/B

CHA AND CHB DATA

ALTERNATINGLY

AVAILABLE ON 10-BIT,

MULTIPLEXED

OUTPUT BUS

MAX1186

INA-

INB+

INB-

DSP

POST

PROCESSING

Figure 8. Typical QAM Application, Using the MAX1186

HOLD

ANALOG

INPUT

SAMPLED

DATA (T/H)

T/H

tAD

tAJ

TRACK

CLK

Figure 9. T/H Aperture Timing

Chip Information

TRANSISTOR COUNT: 10,811

PROCESS: CMOS

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