User guide

MAX12527
Dual, 65Msps, 12-Bit, IF/Baseband ADC
_______________________________________________________________________________________ 9
SNR, SINAD vs. ANALOG INPUT AMPLITUDE
(f
CLK
= 65.00352MHz, f
IN
= 175MHz)
MAX12527 toc13
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
= 175MHz)
MAX12527 toc14
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
SNR, SINAD vs. CLOCK SPEED
(f
IN
= 70MHz, A
IN
= -0.5dBFS)
MAX12527 toc15
f
CLK
(MHz)
SNR, SINAD (dB)
6055504540353025
62
64
66
68
70
72
60
20 65
SNR
SINAD
-THD, SFDR vs. CLOCK SPEED
(f
IN
= 70MHz, A
IN
= -0.5dBFS)
MAX12527 toc16
f
CLK
(MHz)
-THD, SFDR (dBc)
6055504540353025
65
70
75
80
85
90
60
20 65
SFDR
-THD
SNR, SINAD vs. CLOCK SPEED
(f
IN
= 175MHz, A
IN
= -0.5dBFS)
MAX12527 toc17
f
CLK
(MHz)
SNR, SINAD (dB)
6055504540353025
62
64
66
68
70
72
60
20 65
SNR
SINAD
-THD, SFDR vs. CLOCK SPEED
(f
IN
= 175MHz, A
IN
= -0.5dBFS)
MAX12527 toc18
f
CLK
(MHz)
-THD, SFDR (dBc)
6055504540353025
65
70
75
80
85
90
60
20 65
SFDR
-THD
SNR, SINAD vs. ANALOG SUPPLY VOLTAGE
(f
CLK
= 65.00352MHz, f
IN
= 70MHz)
MAX12527 toc19
V
DD
(V)
SNR, SINAD (dB)
3.53.43.33.23.1
62
64
66
68
70
72
60
3.0 3.6
SINAD
SNR
-THD, SFDR vs. ANALOG SUPPLY VOLTAGE
(f
CLK
= 65.00352MHz, f
IN
= 70MHz)
MAX12527 toc20
V
DD
(V)
-THD, SFDR (dBc)
3.53.43.33.23.1
65
70
75
80
85
90
60
3.0 3.6
-THD
SFDR
SNR, SINAD vs. ANALOG SUPPLY VOLTAGE
(f
CLK
= 65.00352MHz, f
IN
= 175MHz)
MAX12527 toc21
V
DD
(V)
SNR, SINAD (dB)
3.53.43.33.23.1
62
64
66
68
70
72
60
3.0 3.6
SINAD
SNR
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.)