MAX12557
Dual, 65Msps, 14-Bit, IF/Baseband ADC
8_______________________________________________________________________________________
-2.0
-1.0
-1.5
0
-0.5
0.5
1.0
1.5
2.0
0 4096 61442048 819210240 12288 14336 16384
INTEGRAL NONLINEARITYvs. DIGITAL OUTPUT CODE(4,194,304-POINT DATA RECORD)
MAX12557 toc07
DIGITAL OUTPUT CODE
INL (LSB)
fIN = 3.00123MHz
-1.00
-0.50
-0.75
0
-0.25
0.25
0.50
0.75
1.00
0 4096 61442048 819210240 12288 14336 16384
DIFFERENTIAL NONLINEARITYvs. DIGITAL OUTPUT CODE(4,194,304-POINT DATA RECORD)
MAX12557 toc08
DIGITAL OUTPUT CODE
DNL (LSB)
fIN = 3.00123MHz
40
50
45
60
55
65
70
75
80
0 100 15050 200 250 300 350 400
SNR, SINAD vs. ANALOG INPUT FREQUENCY(fCLK = 65.00352MHz, AIN = -0.5dBFS)
MAX12557 toc09
fIN (MHz)
SNR, SINAD (dB)
SNR
SINAD
50
60
55
75
70
65
90
85
80
95
0 150 20050 100 250 300 350 400
-THD, SFDR vs. ANALOG INPUT FREQUENCY(fCLK = 65.00352MHz, AIN = -0.5dBFS)
MAX12557 toc10
fIN (MHz)
-THD, SFDR (dBc)
SFDR
-THD
20
40
30
60
50
70
80
-55 -45 -40 -35-50 -30 -25 -20 -15 -10 -5 0
MAX12557 toc11
AIN (dBFS)
SNR, SINAD (dB)
SNR, SINAD vs. ANALOG INPUT AMPLITUDE
(fCLK = 65.00352MHz, fIN = 70MHz)
SINAD
SNR
35
55
45
75
65
85
95
-55 -45 -40 -35-50 -30 -25 -20 -15 -10 -5 0
MAX12557 toc12
AIN (dBFS)
-THD, SFDR (dBc)
-THD, SFDR vs. ANALOG INPUT AMPLITUDE
(fCLK = 65.00352MHz, fIN = 70MHz)
-THD
SFDR
FFT PLOT (32,768-POINT DATA RECORD)
MAX12557 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
fCLK = 65.00352MHz
fIN = 174.98857MHz
AIN = -0.476dBFS
SNR = 72.37dB
SINAD = 70.48dB
THD = -75.62dBc
SFDR = 76.37dBc
HD2
-10
-30
-50
-70
-90
-110
HD3
30
2515 201050
TWO-TONE IMD PLOT(16,384-POINT DATA RECORD)
MAX12557 toc05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
fCLK = 65.00352MHz
fIN1 = 68.49987MHz
AIN1 = -6.97dBFS
fIN2 = 71.49930dB
AIN2 = -6.99dBFS
IM3 = -91.54dBc
IMD = -87.97dBc
-10
-30
-50
-70
-90
-110
HD3
2fIN2 + fIN1
2fIN1 + fIN2
fIN2
fIN1
302515 201050
TWO-TONE IMD PLOT(16,384-POINT DATA RECORD)
MAX12557 toc06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
fCLK = 65.00352MHz
fIN1 = 172.49995MHz
AIN1 = -6.95dBFS
fIN2 = 177.49900688MHz
AIN2 = -6.97dBFS
IM3 = -87.61dBc
IMD = -82.37dBc
-10
-30
-50
-70
-90
-110
HD3
fIN1 + fIN2
fIN1 fIN2
HD2
30
2515 201050
Typical Operating Characteristics (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference mode), CL≈5pF at digital outputs, VIN = -0.5dBFS,
DIFFCLK/SECLK= OVDD, PD = GND, G/T= GND, fCLK = 65MHz (50% duty cycle), TA= +25°C, unless otherwise noted.)