Rainbow Electronics MAX1329 - Manual (Page 5)

MAX1329/MAX1330
12-/16-Bit DASs with ADC, DACs, DPIOs, APIOs,
Reference, Voltage Monitors, and Temp Sensor
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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
EXTERNAL REFERENCE AT REFADC
External Reference Input Voltage
Range
AGND AV DD V
REFADC Input Resistance 50 75 k Ω
REFADC Input Current V REFADC = 2.5V, 300ksps 30 40 µA
Turn-On Time REFADC buffer, C REFADC = 1µF 75 µs
Shutdown REFADC Input Current 0.01 1.0 µA
Minimum Capacitive Bypass REFADC to AGND 10 µF
EXTERNAL REFERENCE AT REFDAC
REFDAC Input Voltage Range AGND AV DD V
MAX1329 64 90 180
REFDAC Input Resistance
MAX1330 128 180 360
k Ω
MAX1329, V REFDAC = 2.5V 28 86
REFDAC Input Current
MAX1330, V REFDAC = 2.5V 14 43
µA
Turn-On Time REFDAC buffer 75 µs
Shutdown REFDAC Input Current 0.1 1 µA
Minimum Capacitive Bypass REFDAC to AGND 10 µF
MULTIPLEXER
Absolute Input Voltage Range AGND AV DD V
Absolute Input Leakage Current
( AG N D + 100m V ) < V A IN _ < ( AV D D - 100m V )
( N ote 2)
±0.01 ±1 nA
ADC gain = 1, 2 24
Input Capacitance
ADC gain = 4, 8 48
pF
On Resistance 340 Ω
INTERNAL TEMPERATURE SENSOR
T A = +25°C ±0.25 Internal Sensor Measurement
Error ( N ote 5)
T A = -40°C to +85°C ±3
°C
T A = +25°C ±0.4
T A = 0°C to +70°C ±2
External Sensor Measurement
Error ( N ote 5)
T A = -40°C to +85°C ±3
°C