Electrical characteristics (continued) – Rainbow Electronics MAX1121 User Manual
Page 3
MAX1121
1.8V, 8-Bit, 250Msps Analog-to-Digital Converter
with LVDS Outputs for Wideband Applications
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 250MHz, differential sine-wave clock input drive, 0.1µF capacitor on REFIO,
internal reference, digital output pins differential R
L
= 100Ω ±1%, C
L
= 5pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. ≥25°C guar-
anteed by production test, <25°C guaranteed by design and characterization. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Clock Duty Cycle
Set by clock management circuit
40 to 60
%
Aperture Delay
t
AD
350
ps
Aperture Jitter
t
AJ
0.2
ps
RMS
CLOCK INPUTS (CLKP, CLKN)
Differential Clock Input Amplitude
(Note 2)
200
500
mV
P-P
Clock Input Common-Mode
Voltage Range
1.25
±
0.25
V
Clock Differential Input
Resistance
R
CLK
11
±
25%
k
Ω
Clock Differential Input
Capacitance
C
CLK
5
pF
DYNAMIC CHARACTERISTICS
(at -0.5dBFS)
f
IN
= 10MHz, T
A
≥
+25
°
C
47.2
48.9
f
IN
= 100MHz, T
A
≥
+25
°
C
46.2
48.8
f
IN
= 180MHz
48.8
Signal-to-Noise Ratio
SNR
f
IN
= 500MHz
48.7
dB
f
IN
= 10MHz, T
A
≥
+25
°
C
47.1
48.8
f
IN
= 100MHz, T
A
≥
+25
°
C
46.1
48.7
f
IN
= 180MHz
48.7
Signal-to-Noise
and Distortion
SINAD
f
IN
= 500MHz
48.6
dB
f
IN
= 10MHz, T
A
≥
+25
°
C
60
69
f
IN
= 100MHz, T
A
≥
+25
°
C
59
68
f
IN
= 180MHz
69.1
Spurious-Free
Dynamic Range
SFDR
f
IN
= 500MHz
63.8
dBc
f
IN
= 10MHz
-74.6
f
IN
= 100MHz
-68.4
f
IN
= 180MHz
-69.1
Worst Harmonics
(HD2 or HD3)
f
IN
= 500MHz
-63.8
dBc
IMD
100
f
IN1
= 99MHz at -7dBFS,
f
IN2
= 101MHz at -7dBFS
-70
Two-Tone Intermodulation
Distortion
IMD
500
f
IN1
= 498.5MHz at -7dBFS,
f
IN2
= 502.5MHz at -7dBFS
-56
dBc
LVDS DIGITAL OUTPUTS (D0P/N–D7P/N, DCLKP/N)
Differential Output Voltage
|V
OD
|
250
400
mV