MAX1121 Datasheet, PDF (6/17 Pages) Maxim Integrated Products – 1.8V, 8-Bit, 250Msps Analog-to-Digital Converter with LVDS Outputs for Wideband Applications

1.8V, 8-Bit, 250Msps Analog-to-Digital Converter
with LVDS Outputs for Wideband Applications
Typical Operating Characteristics (continued)
(AV_CC = OV_CC = 1.8V, AGND = OGND = 0, f_SAMPLE = 250.0057MHz, -0.5dBFS; see TOCs for detailed information on test condi-
tions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential R_L = 100Ω, T_A = +25°C.)
HD2/HD3 vs. ANALOG INPUT AMPLITUDE
(f_SAMPLE = 250.0057MHz, f_IN = 60.0294MHz)
-30
-35
-40
HD3
-45
-50
-55
-60
HD2
-65
-70
-75
-80
-85
-90
-30 -25 -20 -15 -10 -5 0
ANALOG INPUT AMPLITUDE (dBFS)
SNR vs. f_SAMPLE
(f_IN = 60.0294MHz, A_IN = -0.5dBFS)
49.0
48.5
48.0
47.5
47.0
46.5
20
60 100 140 180 220 260
f_SAMPLE (MHz)
SFDR vs. f_SAMPLE
(f_IN = 60.0294MHz, A_IN = -0.5dBFS)
90
80
70
60
50
40
20
60 100 140 180 220 260
f_SAMPLE (MHz)
HD2/HD3 vs. f_SAMPLE
(f_IN = 60.03294MHz, A_IN = -0.5dBFS)
-60
-68
HD3
-76
HD2
-84
-92
-100
20
60 100 140 180 220 260
f_SAMPLE (MHz)
TWO-TONE IMD PLOT (8192-POINT
DATA RECORD, COHERENT SAMPLING)
0
-10
f_SAMPLE = 250.0057MHz
f_IN1 = 99.0318MHz
-20 ^{fIN2 = 101.046MHz}
A_IN1 = A_IN2 = -7dBFS
-30 IMD = -70dBc
f_IN1
-40
f_IN2
-50
2f_IN2 -
-60
2f_IN1 - f_IN2 ^fIN1
-70
-80
-90
0
20 40 60 80 100 120 140
ANALOG INPUT FREQUENCY (MHz)
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
32 64 96 128 160 192 224 256
DIGITAL OUTPUT CODE
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
32 64 96 128 160 192 224 256
DIGITAL OUTPUT CODE
GAIN BANDWIDTH PLOT
(f_SAMPLE = 250.0057MHz, A_IN = -0.5dBFS)
2
0
-2
-4
-6
-8
-10
-12
10
100
1000
ANALOG INPUT FREQUENCY (MHz)
SNR vs. TEMPERATURE (f_IN = 65.0108MHz,
f_SAMPLE = 249.856MHz, A_IN = -0.5dBFS)
50.0
49.5
49.0
48.5
48.0
47.5
47.0
46.5
46.0
-40 -15
10
35
60
85
TEMPERATURE (^°C)
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