MAX12527 Datasheet, PDF (8/28 Pages) Maxim Integrated Products – Dual, 65Msps, 12-Bit, IF/Baseband ADC

Dual, 65Msps, 12-Bit, IF/Baseband ADC
Typical Operating Characteristics (continued)
(V_DD = 3.3V, OV_DD = 2.0V, GND = 0, REFIN = REFOUT (internal reference mode), C_L ≈ 5pF at digital outputs, V_IN = -0.5dBFS,
DIFFCLK/SECLK = OV_DD, PD = GND, G/T = GND, f_CLK = 65MHz (50% duty cycle), T_A = +25°C, unless otherwise noted.)
FFT PLOT (32,768-POINT DATA RECORD)
0
-10
f_CLK = 65.00352MHz
f_IN = 174.90525MHz
-20 _{AIN = -0.448dBFS}
-30 ^{SNR = 69.4dB}
-40
SINAD = 68.9dB
THD = -78.6dBc
-50 _{SFDR = 81.1dBc}
-60
HD2
-70
HD3
-80
-90
-100
-110
-120
0
5 10 15 20 25 30
ANALOG INPUT FREQUENCY (MHz)
TWO-TONE IMD PLOT
(16,384-POINT DATA RECORD)
0
-20
-40 fIN1
-60
f_CLK = 65.00352MHz
f_IN1 = 68.49889MHz
f_IN2 = 71.49832MHz
A_IN1 = -6.96dBFS
f_IN2
A_IN2 = -7.02dBFS
IM3 = -92.25dBc
IMD = -89.08dBc
2f_IN2 + f_IN1
-80
-100
-120
0
5 10 15 20 25 30
ANALOG INPUT FREQUENCY (MHz)
TWO-TONE IMD PLOT
(16,384-POINT DATA RECORD)
0
f_CLK = 65.00352MHz
f_IN1 = 172.50293MHz
-20 A_IN1 = -6.99dBFS
f_IN2 = 177.40198MHz
-40
A_IN2 = -7.01dBFS
IM3 = -88.88dBc
IMD = -82.24dBc
-60
f_IN2 - f_IN1
f_IN2
f_IN1
f_IN1 + f_IN2
-80
-100
-120
0
5 10 15 20 25 30
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
f_CLK = 65MHz
f_IN = 3.00119MHz
600 1200 1800 2400 3000 3600 4200
DIGITAL OUTPUT CODE
-THD, SFDR vs. ANALOG INPUT FREQUENCY
(f_CLK = 65.00352MHz, A_IN = -0.5dBFS)
95
90
85
SFDR
80
75
70
-THD
65
60
55
50
0
50 100 150 200 250 300 350 400
f_IN (MHz)
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
f_CLK = 65MHz
f_IN = 3.00119MHz
600 1200 1800 2400 3000 3600 4200
DIGITAL OUTPUT CODE
SNR, SINAD vs. ANALOG INPUT AMPLITUDE
(f_CLK = 65.00352MHz, f_IN = 70MHz)
75
SNR
65
55
45
SINAD
35
25
15
-55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0
A_IN (dBFS)
SNR, SINAD vs. ANALOG INPUT FREQUENCY
(f_CLK = 65.00352MHz, A_IN = -0.5dBFS)
72
SNR
70
68
66
64
62
SINAD
60
58
56
54
52
50
0 50 100 150 200 250 300 350 400
f_IN (MHz)
-THD, SFDR vs. ANALOG INPUT AMPLITUDE
(f_CLK = 65.00352MHz, f_IN = 70MHz)
95
85
SFDR
75
65
55
-THD
45
35
25
-55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0
A_IN (dBFS)
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