MAX1121 Datasheet, PDF (5/17 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
(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.)
FFT PLOT (8192-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_SAMPLE = 250.0057MHz
-10
f_IN = 11.5054MHz
-20
A_IN = -0.4885MHz
SNR = 48.9dB
-30
SFDR = 71.5dBc
HD2 = -79.2dBc
-40
HD3 = -74.6dBc
-50
-60
HD2 HD3
-70
-80
-90
0
20 40 60 80 100 120 140
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT (8192-POINT DATA RECORD,
COHERENT SAMPLING)
0
-10
-20
FUNDAMENTAL
f_SAMLE = 250.0057MHz
f_IN = 500.516MHz
A_IN = -0.5235MHz
SNR = 48.8dB
-30
SFDR = 63.8dBc
HD2 = -70.8dBc
-40
HD3 = -63.8dBc
-50 HD3
-60
-70
HD2
-80
-90
0
20 40 60 80 100 120 140
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT (8192-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_SAMPLE = 250.0057MHz
-10
f_IN = 60.0294MHz
-20
A_IN = -0.4885MHz
SNR = 49dB
-30
SFDR = 71.1dBc
HD2 = -79.5dBc
-40
HD3 = -71.9dBc
-50
HD3
HD2
-60
-70
-80
-90
0
20 40 60 80 100 120 140
ANALOG INPUT FREQUENCY (MHz)
SNR vs. ANALOG INPUT FREQUENCY
(f_SAMPLE = 250.0057MHz, A_IN = -0.5dBFS)
50
49
48
47
46
45
0
100 200 300 400 500
f_IN (MHz)
FFT PLOT (8192-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_SAMPLE = 250.0057MHz
-10
f_IN = 183.5064MHz
-20
A_IN = -0.5245MHz
SNR = 48.8dB
-30
SFDR = 69.1dBc
HD2 = -77.2dBc
-40
HD3 = -69.1dBc
-50
-60
HD3
HD2
-70
-80
-90
0
20 40 60 80 100 120 140
ANALOG INPUT FREQUENCY (MHz)
SFDR vs. ANALOG INPUT FREQUENCY
(f_SAMPLE = 250.0057MHz, A_IN = -0.5dBFS)
80
74
68
62
56
50
0
100 200 300 400 500
f_IN (MHz)
HD2/HD3 vs. ANALOG INPUT FREQUENCY
(f_SAMPLE = 250.0057MHz, A_IN = -0.5dBFS)
-50
-60
HD3
-70
-80
HD2
-90
-100
0
100 200 300 400 500
f_IN (MHz)
SNR vs. ANALOG INPUT AMPLITUDE
(f_SAMPLE = 250.0057MHz, f_IN = 60.0294MHz)
50
45
40
35
30
25
20
-30 -25 -20 -15 -10 -5 0
ANALOG INPUT AMPLITUDE (dBFS)
SFDR vs. ANALOG INPUT AMPLITUDE
(f_SAMPLE = 250.0057MHz, f_IN = 60.0294MHz)
75
70
65
60
55
50
45
40
35
30
-30 -25 -20 -15 -10 -5 0
ANALOG INPUT AMPLITUDE (dBFS)
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