MAX12557
Dual, 65Msps, 14-Bit, IF/Baseband ADC
_______________________________________________________________________________________ 9
20
40
30
60
50
70
80
-55 -45 -40 -35-50 -30 -25 -20 -15 -10 -5 0
MAX12557 toc13
AIN (dBFS)
SNR, SINAD (dB)
SNR, SINAD vs. ANALOG INPUT AMPLITUDE(fCLK = 65.00352MHz, fIN = 175MHz)
SINAD
SNR
35
55
45
75
65
85
95
-55 -45 -40 -35-50 -30 -25 -20 -15 -10 -5 0
MAX12557 toc14
AIN (dBFS)
-THD, SFDR (dBc)
-THD, SFDR vs. ANALOG INPUT AMPLITUDE(fCLK = 65.00352MHz, fIN = 175MHz)
-THD
SFDR
60
64
68
72
76
80
20 35 4025 30 45 50 55 60 65
SNR, SINAD vs. CLOCK SPEED(fIN = 70MHz, AIN = -0.5dBFS)
MAX12557 toc15
fCLK (MHz)
SNR, SINAD (dB)
SNR
SINAD
60
70
75
80
85
90
20 35 4025 30 45 50 55 60 65
-THD, SFDR vs. CLOCK SPEED(fIN = 70MHz, AIN = -0.5dBFS)
MAX12557 toc16
fCLK (MHz)
-THD, SFDR (dBc)
SFDR
-THD
65
60
64
68
72
76
80
20 35 4025 30 45 50 55 60 65
SNR, SINAD vs. CLOCK SPEED(fIN = 175MHz, AIN = -0.5dBFS)
MAX12557 toc17
fCLK (MHz)
SNR, SINAD (dB)
SNR
SINAD
60
70
75
80
85
90
20 35 4025 30 45 50 55 60 65
-THD, SFDR vs. CLOCK SPEED(fIN = 175MHz, AIN = -0.5dBFS)
MAX12557 toc18
fCLK (MHz)
-THD, SFDR (dBc)
-THD
65
SFDR
60
64
72
68
76
80
3.0 3.23.1 3.3 3.4 3.5 3.6
SNR, SINAD vs. ANALOG SUPPLY VOLTAGE(fCLK = 65.00352MHz, fIN = 70MHz)
MAX12557 toc19
VDD (V)
SNR, SINAD (dB)
SNR
SINAD
60
70
65
80
75
90
85
95
3.0 3.2 3.33.1 3.4 3.5 3.6
MAX12557 toc20
VDD (V)
-THD, SFDR (dBc)
-THD, SFDR vs. ANALOG SUPPLY VOLTAGE(fCLK = 65.00352MHz, fIN = 70MHz)
SFDR
-THD
60
63
69
66
72
75
3.0 3.23.1 3.3 3.4 3.5 3.6
SNR, SINAD vs. ANALOG SUPPLY VOLTAGE(fCLK = 65.00352MHz, fIN = 175MHz)
MAX12557 toc21
VDD (V)
SNR, SINAD (dB)
SNR
SINAD
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.)