Rainbow Electronics MAX1127 - Manual (Page 7)

MAX1127
Quad, 12-Bit, 65Msps, 1.8V ADC with
Serial LVDS Outputs
_______________________________________________________________________________________ 7
FFT PLOT
(32,768-POINT DATA RECORD)
MAX1127 toc01
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-110
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-120
0 32
f CLK = 65.04448MHz
f IN = 5.301935MHz
A IN = -0.5dBFS
SNR = 69.5dB
SINAD = 69.47dB
THD = -90.94dBc
SFDR = 93.27dBc
HD2 HD3
FFT PLOT
(32,768-POINT DATA RECORD)
MAX1127toc02
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-110
HD3
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-120
0 32
f CLK = 65.04448MHz
f IN = 30.30301MHz
A IN = -0.5dBFS
SNR = 69.45dB
SINAD = 69.4dB
THD = -89.3dBc
SFDR = 89.7dBc
HD2
CROSSTALK
(4096-POINT DATA RECORD)
MAX1127 toc03
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-110
0 32
MEASURED ON CHANNEL 1,
WITH INTERFERING SIGNAL
ON CHANNEL 0.
f
IN(IN1) = 5.3489349MHz
f IN(IN0) = 30.2683055MHz
CROSSTALK
(4096-POINT DATA RECORD)
MAX1127 toc04
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-110
0 32
MEASURED ON CHANNEL 1,
WITH INTERFERING SIGNAL
ON CHANNEL 2.
f
IN(IN1) = 5.3489349MHz
f IN(IN2) = 30.2683055MHz
CROSSTALK
(4096-POINT DATA RECORD)
MAX1127 toc05
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-110
0 32
MEASURED ON CHANNEL 1,
WITH INTERFERING SIGNAL
ON CHANNEL 3.
f
IN(IN1) = 5.3489349MHz
f IN(IN3) = 30.2683055MHz
TWO-TONE INTERMODULATION DISTORTION
(32,768-POINT DATA RECORD)
MAX1127 toc06
FREQUENCY (MHz)
AMPLITUDE (dBFS)
28 4 8 12 20 16 24
-110
-90
-100
-80
-70
-50
-30
-10
-60
-40
-20
0
-120
0 32
f IN(IN1) = 12.348685MHz
f IN(IN2) = 13.650845MHz
A IN1 = -6.5dBFS
A IN2 = -6.5dBFS
IMD = 91.2dBc
IM3 = 95.7dBc
1
-7
1 100 1000
GAIN BANDWIDTH PLOT
-5
-6
-4
-3
-2
-1
0
MAX1127 toc07
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
10
SMALL-SIGNAL
BANDWIDTH
-20dBFS
FULL-POWER
BANDWIDTH
-0.5dBFS
LIMITED BY
MAX1127EVKIT
INPUT CIRCUITRY
Typical Operating Characteristics
(AV DD = 1.8V, OV DD = 1.8V, CV DD = 1.8V, GND = 0, external V REFIO = 1.24V, INTREF = AV DD , differential input at -0.5dBFS,
f CLK = 65MHz (50% duty cycle), DT = low, C LOAD = 10pF, T A = +25°C, unless otherwise noted.)