Datasheet

(V
ADD
= 5.0V, T
A
= +25°C, unless otherwise noted.)
Figure 1. Serial Interface Timing Diagram
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
SUPPLY CURRENT
vs. INTERNAL CLOCK FREQUENCY
MAX1464 toc02
INTERNAL CLOCK FREQUENCY (MHz)
SUPPLY CURRENT, I
DD
(mA)
4.54.03.5
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)
98704315-13
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)
5.35.14.7 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)
5.35.14.7 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
1.00.5-0.5 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
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1464 toc01
SUPPLY VOLTAGE, V
DD
(V)
SUPPLY CURRENT, I
DD
(mA)
5.35.14.7 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
MAX1464 Low-Power, Low-Noise Multichannel
Sensor Signal Processor
www.maximintegrated.com
Maxim Integrated │ 9
Typical Operating Characteristics