Datasheet

MAX1276/MAX1278
1.8Msps, Single-Supply, Low-Power, True-
Differential, 12-Bit ADCs with Internal Reference
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
DD
= +5V, V
L
= V
DD
, f
SCLK
= 28.8MHz, f
SAMPLE
= 1.8Msps, T
A
= -40°C to +85°C unless otherwise noted. Typical values are
meas- ured at T
A
= +25°C.)
V
L
SUPPLY CURRENT
vs. TEMPERATURE
MAX1276/78 toc22
TEMPERATURE (°C)
V
L
SUPPLY CURRENT (mA)
603510-15
0.2
0.4
0.6
0.8
1.0
0
-40 85
CONVERSION, f
SCLK
= 28.8MHz
FULL/PARTIAL POWER-DOWN, f
CLK
= 28.8MHz
V
L
SUPPLY CURRENT
vs. CONVERSION RATE
MAX1276/78 toc23
f
SAMPLE
(kHz)
V
L
SUPPLY CURRENT (mA)
15001000500
0.2
0.4
0.6
0.8
1.0
0
0 2000
V
L
= 5V
V
L
= 3V
V
L
= 1.8V
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1276/78 toc24
TEMPERATURE (°C)
REFERENCE VOLTAGE (V)
603510-15
4.08
4.10
4.12
4.06
-40 85
REFERENCE VOLTAGE
vs. LOAD CURRENT (SOURCE)
MAX1276/78 toc25
LOAD CURRENT (mA)
REFERENCE VOLTAGE (V)
8642
4.07
4.08
4.09
4.10
4.06
010
REFERENCE VOLTAGE
vs. LOAD CURRENT (SINK)
MAX1276/78 toc26
LOAD CURRENT (μA)
REFERENCE VOLTAGE (V)
400300200100
4.09
4.10
4.11
4.12
4.08
0500