Datasheet

MAX1377/MAX1379/MAX1383
Dual, 12-Bit, 1.25Msps Simultaneous-Sampling
ADCs with Serial Interface
______________________________________________________________________________________ 11
0
-20
-40
-60
-80
-100
-120
0 300 600 900
MAX1379 INTERMODULATION PLOT
MAX1377 toc22
ANALOG INPUT FREQUENCY (kHz)
AMPLITUDE (dB)
f
SAMPLE
= 1.8Msps
f
SCLK
= 28.8MHz
f
IN1
= 250kHz
f
IN1
= 300kHz
IMD = -81.53dB
V
REF
= 4.096V
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0.9
0.8
1.0
-40 -10 5 20-25 35 50 65 80
MAX1379 AVDD FULL POWER-DOWN
CURRENT vs. TEMPERATURE
MAX1377 toc23
TEMPERATURE (°C)
2.0
2.4
2.2
2.8
2.6
3.2
3.0
3.4
3.8
3.6
4.0
-40 -10 5 20-25 35 50 65 80
MAX1379 AVDD PARTIAL POWER-DOWN
CURRENT vs. TEMPERATURE
MAX1377 toc24
TEMPERATURE (°C)
AVDD FULL POWER-DOWN CURRENT (mA)
10.0
11.0
10.5
12.5
12.0
11.5
13.5
13.0
14.0
-40 5 20-25 -10 35 50 65 80
MAX1379 AVDD SUPPLY CURRENT
vs. TEMPERATURE
MAX1377 toc25
TEMPERATURE (°C)
AVDD SUPPLY CURRENT (mA)
0
6
4
2
8
10
12
14
16
18
20
0 800400 1200 1600 2000
MAX1379 AVDD SUPPLY CURRENT
vs. CONVERSION RATE
MAX1377 toc26
CONVERSION RATE (kHz)
AVDD SUPPLY CURRENT (mA)
Typical Operating Characteristics (continued)
(V
AVDD
= 5V/3V, V
L
= 3V, f
SCLK
= 20MHz, T
A
= +25°C, unless otherwise noted.)
MAX1379 FULL-SCALE AMPLITUDE
vs. FREQUENCY
MAX1377 toc27
FREQUENCY (MHz)
OUTPUT SWING (LSB)
3600
3650
3700
3750
3800
3850
3550
110
MAX1379 INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1377 toc28
AVDD (V)
V
REF
(V)
4.05
4.06
4.07
4.02
4.03
4.04
4.08
4.09
4.10
4.01
4.20 4.70 5.204.45 4.95
T
A
= +25°C
T
A
= -40°C
T
A
= +85°C