Rainbow-electronics MAX11043 Manual do Utilizador Página 6
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MAX11043
4-Channel, 16-Bit, Simultaneous-Sampling ADCs
with PGA, Filter, and 8-/12-Bit Dual-Stage DAC
6 _______________________________________________________________________________________
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
PGA disabled 60 80
Analog Supply Current I
AVDD
All channels selected
PGA enabled 120 140
mA
Digital Supply Current I
DVDD
26 40 mA
I
AVDD
5
Shutdown Current
I
DVDD
5
mA
STATIC ACCURACY—FINE DAC (C
L
= 200pF, R
L
= 10kΩ)
Resolution 12 Bits
Integral Nonlinearity INL -5 +5 LSB
Differential Nonlinearity DNL Guaranteed monotonic -1 +1 LSB
Offset Error -70 +70 mV
Offset-Error Temperature
Coefficient
±50 µV/°C
Gain Error -2 0 %
Gain-Error Temperature
Coefficient
±20
ppm of
FS/°C
DYNAMIC PERFORMANCE—FINE DAC (C
L
= 200pF, R
L
= 10kΩ)
Output Noise f = 0.1Hz to 1MHz 200 µV
RMS
DAC Glitch Impulse Major carry transition 12 nV•s
25% to 75% FS 3
Voltage-Output Settling Time
1% FS 1.5
µs
Voltage-Output Slew Rate 0.6 V/µs
STATIC ACCURACY—REFDACH AND REFDACL
Resolution 8 Bits
Integral Nonlinearity INL -0.5 +0.5 LSB
Differential Nonlinearity DNL -0.2 +0.2 LSB
Offset Error -30 +30 mV
Offset-Error Temperature
Coefficient
±50 µV/°C
Gain Error -5 +5 LSB
Gain-Error Temperature
Coefficient
±20
ppm of
FS/°C
FLASH MEMORY
Programming Endurance 10,000 Cycles
Data Retention T
A
= +85°C 15 Years
- MAX11043 1
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