Electrical characteristics (continued) – Rainbow Electronics MAX11043 User Manual
Page 4
MAX11043
4-Channel, 16-Bit, Simultaneous-Sampling ADCs
with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
4
_______________________________________________________________________________________
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.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Channel-to-Channel Isolation
Unused channels are shorted and
unconnected
80
104
dB
Channel Phase Matching
Between all channels, including complete
analog signal path
-0.12
+0.12
Degrees
DYNAMIC PERFORMANCE (All Modes)
All 4 channels
400
Conversion Rate
2 channels only
800
ksps
Minimum Throughput
5
ksps
Power-Supply Rejection Ratio
DCPSRR
50
dB
ANALOG INPUTS (AINAP/AINAN, AINBP/AINBN, AINCP/AINCN, AINDP/AINDN)
Absolute Voltage Any Input
(Note 4)
0
AVDD
V
DIFF = 1
25
Direct input to ADC,
gain = 1
DIFF = 0
100
Direct input to ADC, gain = 2
7
Direct input to ADC, gain = 4 or 8
7
Input Impedance (Note 5)
PGA gain = 16
5.5
k
Ω
Input Capacitance
EQ mode only
50
pF
EQ FILTER (Analog and Digital)
Unity-Gain Frequency
Default
5
kHz
Lower Transition Frequency
Default, from 40dB/decade to 0dB/decade
190
kHz
Upper Transition Frequency
Default, from 0dB/decade to -80dB/decade
205
kHz
LP FILTER
-3dB Corner Frequency
Default
205
kHz
REFERENCE INPUT
REF_ Input Voltage Range
V
REF_
2
2.5
2.8
V
Input Current
150
µA
REFBP Input Voltage Range
V
REFBP
2
2.5
2.8
V
Input Current
700
µA
REFDAC Input Voltage Range
V
REFDAC
1
1.25
1.4
V
Input Resistance
17
k
Ω