Datasheet

MAX1032/MAX1033
8- and 4-Channel, ±3 x V
REF
Multirange Inputs, Serial 14-Bit ADCs
9
Maxim Integrated
OFFSET DRIFT vs. TEMPERATURE
MAX1032/33 toc14
TEMPERATURE (°C)
OFFSET ERROR (mV)
603510-15
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
-40 85
BIPOLAR
BIPOLAR
+3 x V
REF
±3 x V
REF
4
EXTERNAL REFERENCE INPUT CURRENT
vs. EXTERNAL REFERENCE INPUT VOLTAGE
MAX1032 toc12
EXTERNAL REFERENCE VOLTAGE (V)
EXTERNAL REFERENCE CURRENT (µA)
4.14.03.9
77
79
81
83
85
75
3.8 4.2
GAIN DRIFT vs. TEMPERATURE
MAX1032/33 toc13
TEMPERATURE (°C)
GAIN ERROR (%FSR)
603510-15
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.10
-0.10
-40 85
±3 x V
REF
BIPOLAR RANGE
±3 x V
REF
4
BIPOLAR RANGE
CHANNEL-TO-CHANNEL ISOLATION
vs. INPUT FREQUENCY
MAX1032/33 toc15
FREQUENCY (kHz)
ISOLATION (dB)
100010010
-100
-80
-60
-40
-20
0
-120
1 10,000
f
SAMPLE
= 115ksps
±3 x V
REF
BIPOLAR RANGE
CH0 TO CH2
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX1032/33 toc16
FREQUENCY (kHz)
CMRR (dB)
100010010
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
1 10,000
f
SAMPLE
= 115ksps
±3 x V
REF
BIPOLAR RANGE
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1032/33 toc17
DIGITAL OUTPUT CODE
INL (LSB)
12,28881924096
-0.5
0
0.5
1.0
-1.0
0 16,383
f
SAMPLE
= 115ksps
±3 x V
REF
BIPOLAR RANGE
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX1032 toc18
DIGITAL OUTPUT CODE
DNL (LSB)
12,2884096 8192
-0.5
0
0.5
1.0
-1.0
0 16,383
f
SAMPLE
= 115ksps
±3 x V
REF
BIPOLAR RANGE
FFT AT 5kHz
MAX1032/33 toc19
FREQUENCY (kHz)
MAGNITUDE (dB)
5040302010
-120
-100
-80
-60
-40
-20
0
-140
0
f
SAMPLE
= 115ksps
f
IN(SINE WAVE)
= 5kHz
±3 x V
REF
BIPOLAR RANGE
Typical Operating Characteristics (continued)
(V
AVDD1
= V
AVDD2
= V
DVDD
= V
DVDD0
= 5V, V
AGND1
= V
DGND
= V
DGNDO
= V
AGND2
= V
AGND3
= 0V, f
CLK
= 3.5MHz (50% duty
cycle), external clock mode, V
REF
= 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input
range (±3 x V
REF
), C
DOUT
= 50pF, C
SSTRB
= 50pF; unless otherwise noted.)