MAX1428 Datasheet, PDF (5/18 Pages) Maxim Integrated Products – 15-Bit, 80Msps ADC with -78.4dBFS Noise Floor for IF Applications

15-Bit, 80Msps ADC with -78.4dBFS
Noise Floor for IF Applications
Typical Operating Characteristics
(AV_CC = 5V, DV_CC = DRV_CC = 2.5V, INP and INN driven differentially with a -2dBFS amplitude, CLKP and CLKN driven differentially
with a 2V_P-P sinusoidal input signal, C_L = 5pF at digital outputs, f_CLK = 80MHz, T_A = 25°C. All AC data is based on a 32k-point FFT
record and under coherent sampling conditions.)
FFT PLOT
(32,768-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_CLK = 80.0195MHz
-20
f_IN = 15.0012MHz
A_IN = -2.07dBFS
SNR = 75.4dBc
-40
SINAD = 75.1dBc
SFDR1 = 89.4dBc
SFDR2 = 99dBc
-60
HD2 = -92.1dBFS
HD3 = -91.4dBFS
-80
FFT PLOT
(32,768-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_CLK = 80.0195MHz
-20
f_IN = 35.001186MHz
A_IN = -2.07dBFS
SNR = 75dBc
-40 ^{SINAD = 74.5dBc}
SFDR1 = 86.2dBc
SFDR2 = 94.6dBc
-60 _{HD2 = -91.8dBFS}
HD3 = -88.3dBFS
-80
FFT PLOT
(32,768-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_CLK = 80.0195MHz
-20
f_IN = 69.9999MHz
A_IN = -1.98dBFS
SNR = 73.9dBc
-40
SINAD = 73.2dBc
SFDR1 = 82.8dBc
SFDR2 = 95.3dBc
-60
HD2 = -90.3dBFS
HD3 = -84.7dBFS
-80
-100
-100
-100
-120
0
5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
-120
0
5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
-120
0
5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT
(32,768-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_CLK = 80.019456MHz
-20
f_IN = 168.09995MHz
A_IN = -5.96dBFS
SNR = 69dBc
-40
SINAD = 67.8dBc
SFDR1 = 77.8dBc
SFDR2 = 79.8dBc
-60
HD2 = -85.6dBFS
HD3 = -83.8dBFS
-80
-100
-120
0
5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
TWO-TONE IMD PLOT
(32,768-POINT DATA RECORD,
COHERENT SAMPLING)
0
f_IN1 ^fCLK ^{= 80.0195MHz}
-20
f_IN2 ^fIN1 ^{= 68.9987MHz}
A_IN1 = -8.05dBFS
f_IN2 = 71.0012MHz
-40
A_IN2 = -8.06dBFS
IMD = -82dBc
-60
2f_IN1 + f_IN2 ^fIN1 ^{+ 2f}IN2
-80
2f_IN1 - f_IN2
-100
-120
0
5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
SNR vs. ANALOG INPUT FREQUENCY
(f_CLK = 80.0195MHz, A_IN = -2dBFS)
77
76
75
74
73
72
71
70
69
68
5
25 45 65 85 105 125 145 165 185
f_IN (MHz)
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