User guide
MAX1124
1.8V, 10-Bit, 250Msps Analog-to-Digital Converter
with LVDS Outputs for Wideband Applications
_______________________________________________________________________________________ 7
SINAD vs. TEMPERATURE (f
IN
= 65.0344MHz,
f
SAMPLE
= 250.0057MHz, A
IN
= -0.5dBFS)
MAX1124 toc19
TEMPERATURE (
°
C)
SINAD (dB)
603510-15
60
59
58
57
56
55
54
53
52
51
50
-40 85
SFDR vs. TEMPERATURE (f
IN
= 65.0344MHz,
f
SAMPLE
= 250.0057MHz, A
IN
= -0.5dBFS)
MAX1124 toc20
TEMPERATURE (
°
C)
SFDR (dBc)
603510-15
55
60
65
70
75
80
50
-40 85
POWER DISSIPATION vs. f
SAMPLE
(f
IN
= 60.0294MHz, A
IN
= -0.5dBFS)
MAX1124 toc21
f
SAMPLE
(MHz)
P
DISS
(mW)
1701309050
445
435
465
455
485
475
495
505
425
10 250210
FS VOLTAGE vs. FS ADJUST RESISTOR
MAX1124 toc22
FS ADJUST RESISTOR (Ω)
V
FS
(V)
900800600 700200 300 400 500100
1.18
1.20
1.22
1.24
1.26
1.28
1.30
1.32
1.34
1.16
01000
RESISTOR VALUE APPLIED
BETWEEN REFADJ AND AGND
RESISTOR VALUE APPLIED
BETWEEN REFADJ AND REFIO
FIGURE 6
SNR vs. VOLTAGE SUPPLY
(f
IN
= 60.0294MHz, A
IN
= -0.5dBFS)
MAX1124 toc23
VOLTAGE SUPPLY (V)
SNR
(dB)
2.01.91.81.71.6
60
59
58
57
56
55
54
53
52
51
50
1.5 2.1
AV
CC
= OV
CC
INTERNAL REFERENCE vs. SUPPLY VOLTAGE
(f
SAMPLE
= 250.0057MHz)
MAX1124 toc24
SUPPLY VOLTAGE (V)
V
REFIO
(V)
2.01.91.81.71.6
1.2310
1.2320
1.2330
1.2340
1.2350
1.2300
1.5 2.1
MEASURED AT THE REFIO PIN
REFADJ = AV
CC
= OV
CC
0.0E+00
1.0E+04
3.0E+04
2.0E+04
4.0E+04
5.0E+04
6.0E+04
7.0E+04
8.0E+04
507
295
508 509 510 511
43
NOISE HISTOGRAM
(DC INPUT, 128k-POINT DATA RECORD)
MAX1124 toc25
DIGITAL OUTPUT NOISE
CODE COUNTS
f
SAMPLE
=
250MHz
56333
74401
PROPAGATION DELAY TIMES
vs. TEMPERATURE
MAX1124 toc26
TEMPERATURE (
°
C)
PROPAGATION DELAY (ns)
603510-15
1
2
3
4
5
6
0
-40 85
t
CPDL
t
PDL
Typical Operating Characteristics (continued)
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 250.0057MHz, -0.5dBFS; see TOCs for detailed information on test condi-
tions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential R
L
= 100Ω, T
A
= +25°C.)