MAX1329/MAX1330
ADC REFERENCE VOLTAGE (1.25V)
vs. ANALOG SUPPLY VOLTAGE
MAX1329
toc23
AVDD SUPPLY VOLTAGE (V)
V
REFADC
(V)
1.246
1.247
1.248
1.249
1.250
1.251
1.252
1.253
1.254
1.255
1.245
5.0
4.5
3.0
3.5
4.0
2.5
5.5
TA = -40°C
TA = +85°C
TA = +25°C
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
______________________________________________________________________________________
15
ADC REFERENCE VOLTAGE (1.25V)
vs. LOAD CURRENT
MAX1329
toc20
400
300
0
100
200
1.2485
1.2490
1.2495
1.2500
1.2505
1.2510
1.2515
1.2520
1.2480
-100
500
A
B
C
D
E
F
IREFADC (A)
A: TA = -40°C, AVDD = 5V, DVDD = 3V
B: TA = -40°C, AVDD = 3V, DVDD = 2V
C: TA = +25°C, AVDD = 5V, DVDD = 3V
D: TA = +25°C, AVDD = 3V, DVDD = 2V
E: TA = +85°C, AVDD = 5V, DVDD = 3V
F: TA = +85°C, AVDD = 3V, DVDD = 2V
V
REF
ADC
(V)
ADC REFERENCE VOLTAGE (2.048V)
vs. LOAD CURRENT
MAX1329
toc21
400
300
0
100
200
2.042
2.044
2.046
2.048
2.050
2.052
2.054
2.056
2.040
-100
500
A
B
C
D
E
F
IREFADC (A)
V
REF
ADC
(V)
A: TA = -40°C, AVDD = 5V, DVDD = 3V
B: TA = -40°C, AVDD = 3V, DVDD = 2V
C: TA = +25°C, AVDD = 5V, DVDD = 3V
D: TA = +25°C, AVDD = 3V, DVDD = 2V
E: TA = +85°C, AVDD = 5V, DVDD = 3V
F: TA = +85°C, AVDD = 3V, DVDD = 2V
ADC REFERENCE VOLTAGE (2.5V)
vs. LOAD CURRENT
MAX1329
toc22
2.492
2.494
2.496
2.498
2.500
2.502
2.504
2.506
2.508
2.510
2.490
400
300
0
100
200
-100
500
A
B
C
D
E
F
IREFADC (A)
V
REF
ADC
(V)
A: TA = -40°C, AVDD = 5V, DVDD = 3V
B: TA = -40°C, AVDD = 3V, DVDD = 2V
C: TA = +25°C, AVDD = 5V, DVDD = 3V
D: TA = +25°C, AVDD = 3V, DVDD = 2V
E: TA = +85°C, AVDD = 5V, DVDD = 3V
F: TA = +85°C, AVDD = 3V, DVDD = 2V
Typical Operating Characteristics (continued)
(AVDD = 5.0V, VREFADC = VREFDAC = 2.5V for DVDD = 3.0V; TA = +25°C, unless otherwise noted.)