Typical operating characteristics (continued) – Rainbow Electronics MAX1329 User Manual
Page 22
MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
22
______________________________________________________________________________________
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.)
CHARGE-PUMP OUTPUT VOLTAGE
vs. OUTPUT CURRENT (AV
DD
= 5V)
MAX1329 toc69
I
OUT
(mA)
AV
DD
(V)
45
40
35
30
25
20
15
10
5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
4.5
0
50
DV
DD
= 2.7V
DV
DD
= 3.3V
DV
DD
= 3.0V
DV
DD
= 3.6V
200
260
240
220
300
280
380
360
340
320
400
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
CHARGE-PUMP SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1329 toc73
DV
DD
(V)
I
DVDD
(µ
A)
AV
DD
= 3.0V
AV
DD
= 4.0V
AV
DD
= 5V
2ms/div
CHARGE-PUMP LINE TRANSIENT RESPONSE
FOR +2.0V TO +2.5V STEP INPUT
AV
DD
DV
DD
2.5V
2V
100mV/div
500mV/div
MAX1329 toc72
AV
DD
= +3.0V
,
3.0kΩ LOAD
4µs/div
CHARGE-PUMP RIPPLE (I
OUT
= 5mA,
DV
DD
= 2V, CHARGE-PUMP CLOCK = 78kHz)
AV
DD
2mV/div
MAX1329 toc70
AV
DD
= +3.0V, DV
DD
= +2.0V
1ms/div
CHARGE-PUMP LOAD TRANSIENT
RESPONSE FOR 0.1mA TO 1.0mA LOAD
AV
DD
I
AVDD
1mA
0
1mV/div
MAX1329 toc71
AV
DD
= +3.0V
,
DV
DD
= +2.0V