MAX11043
4-Channel, 16-Bit, Simultaneous-Sampling ADCs
with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DYNAMIC PERFORMANCE (PGA Enabled, PGA Gain = 8 x (25kHz -1dB Full-Scale Signal))
Maximum Full-Scale Input ADC modulator gain = 1 150 mV
P-P
Input-Referred Noise Spectral
Density
100kHz 20 nV/√Hz
Second Harmonic to
Fundamental
-92 dB
Third Harmonic to Fundamental -94 dB
Spurious-Free Dynamic Range SFDR 100 dB
Channel-to-Channel Isolation
Unused channels are shorted and
unconnected
110 dB
Channel Phase Matching
Between all channels, including complete
analog signal path
-0.05 +0.05 Degrees
DYNAMIC PERFORMANCE (PGA Enabled, PGA Gain = 16 x (25kHz -1dB Full-Scale Signal))
Maximum Full-Scale Input ADC modulator gain = 1 75 mV
P-P
Input-Referred Noise Spectral
Density
100kHz 15 nV/√Hz
Second Harmonic to
Fundamental
-99 dB
Third Harmonic to Fundamental -93 dB
Spurious-Free Dynamic Range SFDR 97 dB
Channel-to-Channel Isolation
Unused channels are shorted and
unconnected
106 dB
Channel Phase Matching
Between all channels, including complete
analog signal path
-0.075 +0.075 Degrees
DYNAMIC PERFORMANCE (EQ Mode (5kHz -1dB Full-Scale Signal, CONFIG_ Register Bit 3 = 1))
Maximum Full-Scale Input ADC modulator gain = 1 (Note 2) 800 mV
P-P
Input-Referred Noise Spectral
Density
100kHz 6 nV/√Hz
Second Harmonic to
Fundamental
-80 -90 dB
Third Harmonic to Fundamental -77 -98 dB
Spurious-Free Dynamic Range SFDR Input referred (Note 3) 80 89 dB
ELECTRICAL CHARACTERISTICS (continued)
((V
AVDD
= +3.0V to +3.6V, V
DVDD
= +3.0V, C
DVREG
= 10µF, V
AGND
= V
DGND
= 0, common-mode input voltage = AVDD/2, V
REFBP
=
V
REFA
= V
REFB
= V
REFC
= V
REFD
= +2.5V (external reference), V
REFDAC
= V
REFDACH
= +1.25V (external reference), V
REFDACL
= 0,
C
REFBP
= C
REFA
= C
REFB
= C
REFC
= C
REFD
= C
REFDAC
= 1µF, f
SCLK
= 38.4MHz, f
EXCLK
= 38.4MHz (external clock applied to
OSCIN), clock divider set to 4, SHDN = DACSTEP = UP/DWN = DGND, CONVRUN = DVDD, all analog inputs driven directly through
a series 150Ω/330pF anti-alias filter, PGA gain = 1. Default filters and gain settings. T
A
= T
MIN
to T
MAX
, unless otherwise noted (Note 1).
Typical values are at T
A
= +25°C.)
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