MAX1184 Datasheet, PDF (19/21 Pages) Maxim Integrated Products – Dual 10-Bit, 20Msps, +3V, Low-Power ADC with Internal Reference and Parallel Outputs

Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
DOWNCONVERTER
MAX2451
0°
90°
÷₈
INA+
INA-
MAX1184
INB+
INB-
DSP
POST
PROCESSING
Figure 8. Typical QAM Application, Using the MAX1184
CLK
ANALOG
INPUT
t_AD
t_AJ
SAMPLED
DATA (T/H)
T/H ^TRACK
HOLD
Figure 9. T/H Aperture Timing
TRACK
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:

THD
= 20
× log₁₀



V₂ ²
+
V₃ ²
+
V₄ ²
+
V₅ ²


V₁


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.
Chip Information
TRANSISTOR COUNT: 10,811
PROCESS: CMOS
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