MAX1464 Maxim, MAX1464 Datasheet - Page 9

• Manufacturer Part Number: MAX1464
• Description: Low-Power - Low-Noise Multichannel Sensor Signal Processor
• Manufacturer: Maxim

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