MAX1329 Datasheet, PDF (4/78 Pages) Maxim Integrated Products – 12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs, Reference, Voltage Monitors, and Temp Sensor

12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
ELECTRICAL CHARACTERISTICS (continued)
(DV_DD = 1.8V to 3.6V, AV_DD = 2.7V to 5.5V, V_REFDAC = V_REFADC = 2.5V, external reference; 10µF capacitor at REFADC and REFDAC;
0.01µF capacitor at REFADJ; T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Power-Down Output Leakage
Current
±100
nA
Supply Current per DAC
No load (Note 3)
70
µA
INTERNAL REFERENCE (10µF capacitor at REFADC and REFDAC, 0.01µF capacitor at REFADJ)
Output Voltage at REFADC and
REFDAC
Output-Voltage Temperature
T_A = +25°C, AREF<1:0> = DREF<1:0> = 01
T_A = +25°C, AREF<1:0> = DREF<1:0> = 10
T_A = +25°C, AREF<1:0> = DREF<1:0> = 11
(Note 2)
1.225
2.007
2.450
1.250
2.048
2.500
±10
1.275
2.089
2.550
±75
V
ppm/°C
REFADC and REFDAC
Output Short-Circuit Current
Source
Sink
40
mA
13
REFADC and REFDAC
Line Regulation
±100 ±600 µV/V
Load Regulation
Long-Term Stability
I_SOURCE = 0µA to 500µA, T_A = +25°C
I_SINK = 0µA to 80µA, T_A = +25°C
T_A = +25°C
±100
10
µV/µA
10
ppm/
1000hrs
Turn-On Time
At REFADJ
2
ms
Turn-Off Time
100
ns
Internal reference
445
Reference Supply Current (Note 3)
REFADC buffer
270
µA
REFDAC buffer
270
EXTERNAL REFERENCE AT REFADJ
AREF<1:0> = DREF<1:0> = 11
1.225V
AV_DD
- 0.1V
External Reference Input Voltage
Range
AREF<1:0> = DREF<1:0> = 10
1.496V to
AV_DD - 0.1V
V
Input Resistance
AREF<1:0> = DREF<1:0> = 01
2.450V to
AV_DD - 0.1V
50
75
kΩ
AREF<1:0> = 01
1
REFADC Buffer Gain
AREF<1:0> = 10
0.8192
V/V
AREF<1:0> = 11
0.5
DREF<1:0> = 01
1
REFDAC Buffer Gain
DREF<1:0> = 10
0.8192
V/V
DREF<1:0> = 11
0.5
Minimum Capacitive Bypass
REFADJ to AGND
10
nF
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