Maxim Integrated MAX12527 - Manual (Page 8)

MAX12527
Dual, 65Msps, 12-Bit, IF/Baseband ADC
8 _______________________________________________________________________________________
INTEGRAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX12527 toc07
DIGITAL OUTPUT CODE
INL (LSB)
3600 3000 1800 2400 1200 600
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0 4200
f CLK = 65MHz
f IN = 3.00119MHz
DIFFERENTIAL NONLINEARITY
vs. DIGITAL OUTPUT CODE
MAX12527 toc08
DIGITAL OUTPUT CODE
DNL (LSB)
3600 3000 1800 2400 1200 600
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0 4200
f CLK = 65MHz
f IN = 3.00119MHz
SNR, SINAD vs. ANALOG INPUT FREQUENCY
(f CLK = 65.00352MHz, A IN = -0.5dBFS)
MAX12527 toc09
f IN (MHz)
SNR, SINAD (dB)
350 300 200 250 100 150 50
52
54
56
58
60
62
64
66
68
70
72
50
0 400
SINAD
SNR
-THD, SFDR vs. ANALOG INPUT FREQUENCY
(f CLK = 65.00352MHz, A IN = -0.5dBFS)
MAX12527 toc10
f IN (MHz)
-THD, SFDR (dBc)
350 300 200 250 100 150 50
55
60
65
70
75
80
85
90
95
50
0 400
SFDR
-THD
SNR, SINAD vs. ANALOG INPUT AMPLITUDE
(f CLK = 65.00352MHz, f IN = 70MHz)
MAX12527 toc11
A IN (dBFS)
SNR, SINAD (dB)
-5 -10 -15 -20 -25 -30 -35 -40 -45 -50
25
35
45
55
65
75
15
-55 0
SNR
SINAD
-THD, SFDR vs. ANALOG INPUT AMPLITUDE
(f CLK = 65.00352MHz, f IN = 70MHz)
MAX12527 toc12
A IN (dBFS)
-THD, SFDR (dBc)
-5 -10 -15 -20 -25 -30 -35 -40 -45 -50
35
45
55
65
75
85
95
25
-55 0
SFDR
-THD
FFT PLOT (32,768-POINT DATA RECORD)
MAX12527 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
30 25 15 20 10 5
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
0
f
CLK
= 65.00352MHz
f IN = 174.90525MHz
A IN = -0.448dBFS
SNR = 69.4dB
SINAD = 68.9dB
THD = -78.6dBc
SFDR = 81.1dBc
HD2
HD3
TWO-TONE IMD PLOT
(16,384-POINT DATA RECORD)
MAX12527 toc05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
30 25 20 15 10 5
-100
-80
-60
-40
-20
0
-120
0
f
CLK
= 65.00352MHz
f IN1 = 68.49889MHz
f IN2 = 71.49832MHz
A IN1 = -6.96dBFS
A IN2 = -7.02dBFS
IM3 = -92.25dBc
IMD = -89.08dBc
f IN1
f IN2
2f IN2 + f IN1
TWO-TONE IMD PLOT
(16,384-POINT DATA RECORD)
MAX12527 toc06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
30 25 20 15 10 5
-100
-80
-60
-40
-20
0
-120
0
f CLK = 65.00352MHz
f
IN1
= 172.50293MHz
A IN1 = -6.99dBFS
f IN2 = 177.40198MHz
A IN2 = -7.01dBFS
IM3 = -88.88dBc
IMD = -82.24dBc
f IN1
f IN2 f
IN1
+ f
IN2 f IN2 - f IN1
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.)