MAX1302 Datasheet, PDF (9/31 Pages) Maxim Integrated Products – 8-/4-Channel, VREF Multirange Inputs, Serial 16-Bit ADCs

8-/4-Channel, ±V_REF Multirange Inputs,
Serial 16-Bit ADCs
Typical Operating Characteristics (continued)
(AV_DD1 = AV_DD2 = DV_DD = DV_DDO = 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f_CLK = 3.5MHz (50% duty cycle),
external clock mode, V_REF = 4.096V (external reference operation), REFCAP = AV_DD1, maximum single-ended bipolar input range
(±V_REF), C_DOUT = 50pF, C_SSTRB = 50pF; unless otherwise noted.)
EXTERNAL REFERENCE INPUT CURRENT
vs. EXTERNAL REFERENCE INPUT VOLTAGE
0.16
0.10
ALL MODES
0.08
0.06
0.15
0.04
0.02
GAIN DRIFT
vs. TEMPERATURE
±V_REF BIPOLAR RANGE
+V_REF/2 BIPOLAR
OFFSET DRIFT
vs. TEMPERATURE
1.0
0.8
0.6
+V_REF/4 BIPOLAR RANGE
0.4
0.2
0.14
0
0
-0.02
-0.2
0.13
-0.04
±V_REF/4 BIPOLAR
-0.4
±V_REF BIPOLAR
-0.06
-0.6
-0.08
-0.8
0.12
3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15
EXTERNAL REFERENCE VOLTAGE (V)
-0.10
-40 -15
10
35
60
85
TEMPERATURE (°C)
-1.0
-40 -15
10
35
60
85
TEMPERATURE (°C)
CHANNEL-TO-CHANNEL ISOLATION
vs. INPUT FREQUENCY
0
f_SAMPLE = 115ksps
-20
±V_REF BIPOLAR RANGE
CH0 TO CH2
-40
-60
-80
-100
-120
1
10
100
1000
FREQUENCY (kHz)
10,000
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
2.0
f_SAMPLE = 115ksps
1.5 _{±VREF BIPOLAR RANGE}
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
0
16,384 32,768 49,152
DIGITAL OUTPUT CODE
65,535
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
0
-10
f_SAMPLE = 115ksps
±V_REF BIPOLAR RANGE
-20
-30
-40
-50
-60
-70
-80
-90
-100
1
10
100
1000
FREQUENCY (kHz)
10,000
0
-20
-40
-60
-80
-100
-120
-140
0
FFT AT 5kHz
f_SAMPLE = 115ksps
f_{IN(SINE WAVE)} = 5kHz
±V_REF BIPOLAR RANGE
10 20 30 40 50
TEMPERATURE (°C)
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
2.0
f_SAMPLE = 115ksps
1.5 _{±VREF BIPOLAR RANGE}
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
0
16,384 32,768 49,152
DIGITAL OUTPUT CODE
65,535
SNR, SINAD, ENOB
vs. ANALOG INPUT FREQUENCY
100
MAX1302/03 toc20
90
80
70
SNR
60
SINAD
50
40
ENOB
30
20
10
f_SAMPLE = 115ksps
±V_REF BIPOLAR RANGE
0
1
10
100
1000
FREQUENCY (kHz)
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