Typical operating characteristics – Rainbow Electronics MAX1464 User Manual
Page 9
MAX1464
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
_______________________________________________________________________________________
9
Typical Operating Characteristics
(V
DD
= 5.0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1464 toc01
SUPPLY VOLTAGE, V
DD
(V)
SUPPLY CURRENT, I
DD
(mA)
5.3
5.1
4.7
4.9
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.25
4.5
5.5
CPU ON 2% OF TIME
ADC ON 98% OF TIME
ADC
CLK
= 1MHz
DAC1 ON
SMALL OP AMP ON
T
A
= +125°C
T
A
= +25
°C
T
A
= -40°C
SUPPLY CURRENT
vs. INTERNAL CLOCK FREQUENCY
MAX1464 toc02
INTERNAL CLOCK FREQUENCY (MHz)
SUPPLY CURRENT, I
DD
(mA)
4.5
4.0
3.5
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.20
3.0
5.0
CPU ON 2% OF TIME
ADC ON 98% OF TIME
ADC
CLK
= 1MHz
DAC1 ON
SMALL OP AMP ON
MODULE CURRENT
vs. TEMPERATURE
MAX1464 toc03
TEMPERATURE (
°C)
MODULE CURRENT (mA)
98
70
43
15
-13
0.7
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
0.5
-40
125
DAC + LARGE OP AMP
DAC + SMALL OP AMP
ADC
BASE
BASE OPERATING CURRENT
vs. SUPPLY VOLTAGE
MAX1464 toc04
SUPPLY VOLTAGE, V
DD
(V)
BASE OPERATING CURRENT, I
BO
(mA)
5.3
5.1
4.7
4.9
0.67
0.69
0.71
0.73
0.75
0.77
0.79
0.81
0.65
4.5
5.5
T
A
= +125°C
T
A
= +25
°C
T
A
= -40°C
ADC RATIOMETRICITY ERROR
vs. SUPPLY VOLTAGE
MAX1464 toc05
SUPPLY VOLTAGE, V
DD
(V)
ADC
RATIOMETRICITY
ERROR (%FS)
5.3
5.1
4.7
4.9
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
-0.04
4.5
5.5
ADC INPUT = 0.75 x V
DD
ADC INPUT = 0.5 x V
DD
ADC INPUT = 0
ADC INPUT = -0.75 x V
DD
ADC INPUT = -0.5 x V
DD
ADC
REF
= V
DD
PGA[4:0] = 00000
ADC INL
MAX1464 toc06
1.0
0.5
-0.5
0
-1.0
INPUT VOLTAGE NORMALIZED TO FULL SCALE
ADC NONLINEARITY ERROR (%FS) -0.004
-0.002
0
0.002
0.004
0.006
-0.006
PGA[4:0] = 01000
DO
DI
SCLK
CS
t
CSS
t
CL
t
CH
t
CSH
t
SC
t
CS
t
DS
t
DH
t
DS
t
DH
t
CSI
t
CSS
t
CL
t
CH
t
SC
t
CSH
t
DO
t
TR
t
DV
t
DV
t
DO
t
TR
Figure 1. Serial Interface Timing Diagram