Typical operating characteristics (continued) – Rainbow Electronics MAX1329 User Manual
Page 21
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
______________________________________________________________________________________
21
CHARGE-PUMP EFFICIENCY
vs. OUTPUT CURRENT (AV
DD
= 3V)
MAX1329 toc64
I
OUT
(mA)
EFFICIENCY (%)
20
15
10
5
10
20
30
40
50
60
70
80
90
100
0
0
25
DV
DD
= 1.8V
DV
DD
= 2.5V
DV
DD
= 3.0V
DV
DD
= 2.0V
0
20
60
40
80
100
-5
35
15
55
75
95
115
TEMPERATURE-SENSOR THERMAL
STEP RESPONSE (+25°C TO +85°C)
MAX1329 toc62
TIME (s)
TEMPERATURE (
°
C)
τ = 11s
80
85
90
95
100
105
110
115
120
2.5
3.5
3.0
4.0
4.5
5.0
5.5
INTERNAL TEMPERATURE-SENSOR SUPPLY
CURRENT vs. SUPPLY VOLTAGE
MAX1329 toc63
AV
DD
(V)
I
AVDD
(µ
A)
INTERNAL 2.5V REFERENCE
CLKIO = 3.6864MHz
ADC CLOCK DIV = 1
CONVERSION RATE = 4ksps
Typical Operating Characteristics (continued)
(AV
DD
= 5.0V, V
REFADC
= V
REFDAC
= 2.5V for DV
DD
= 3.0V; T
A
= +25°C, unless otherwise noted.)
TEMPERATURE-SENSOR ACCURACY
vs. TEMPERATURE
MAX1329 toc61
TEMPERATURE (°C)
ERROR (
°
C)
60
35
10
-15
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-40
85
INTERNAL
EXTERNAL
CHARGE-PUMP EFFICIENCY
vs. OUTPUT CURRENT (AV
DD
= 4V)
MAX1329 toc65
I
OUT
(mA)
EFFICIENCY (%)
20
15
10
5
10
20
30
40
50
60
70
80
90
100
0
0
25
DV
DD
= 2.2V
DV
DD
= 2.5V
DV
DD
= 3.0V
DV
DD
= 3.6V
CHARGE-PUMP EFFICIENCY
vs. OUTPUT CURRENT (AV
DD
= 5V)
MAX1329 toc66
I
OUT
(mA)
EFFICIENCY (%)
20
15
10
5
10
20
30
40
50
60
70
80
90
100
0
0
25
DV
DD
= 2.7V
DV
DD
= 3.3V
DV
DD
= 3.6V
DV
DD
=3.0V
CHARGE-PUMP OUTPUT VOLTAGE
vs. OUTPUT CURRENT (AV
DD
= 3V)
MAX1329 toc67
I
OUT
(mA)
AV
DD
(V)
45
40
35
30
25
20
15
10
5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
2.5
0
50
DV
DD
= 1.8V
DV
DD
= 2.0V
DV
DD
= 3.0V
DV
DD
= 2.5V
MAX1329 toc68
I
OUT
(mA)
AV
DD
(V)
45
40
35
30
25
20
15
10
5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
3.5
0
50
CHARGE-PUMP OUTPUT VOLTAGE
vs. OUTPUT CURRENT (AV
DD
= 4V)
DV
DD
= 2.5V
DV
DD
= 2.2V
DV
DD
= 3.6V
DV
DD
= 3.0V