ADUCM322 Datasheet, PDF (6/24 Pages) Analog Devices – Up to 16 ADC input channels

Data Sheet
Parameter
EXTERNAL REFERENCE INPUT
Range¹
Input Current
BUFFERED REFFERNCE OUTPUT
Output Voltage
Accuracy
Reference Temperature Coefficient¹
Output Impedance
Load Current¹
VDAC CHANNEL SPECIFICATIONS
DC Accuracy¹
Resolution¹
Relative Accuracy³
Differential Nonlinearity³
Offset Error
Drift
Gain Error⁴
Symbol Min
1.8
12
12
INL
DNL
−0.99
Drift
Mismatch
Analog Outputs
Output Voltage Range 1¹
0.15
Output Voltage Range 2¹
0.15
Output Impedance
DAC AC Characteristics
Output Settling Time
Glitch Energy
COMPARATOR
Input
Offset Voltage
Bias Current
Voltage Range¹
Capacitance
Hysteresis¹
Response Time
TEMPERATURE SENSOR
Resolution
Accuracy¹
POWER-ON RESET
WATCHDOG TIMER
Timeout Period
FLASH/EE MEMORY
Endurance¹
Data Retention¹
AGNDx
8.5
1.34
POR
WDT
10,000
20
Typ
200
2.504
±8
±15
10
±4
±3
±18
±0.3
±0.4
6.5
0.1
2
10
±20
ADuCM322
Max
Unit
Test Conditions/Comments
2.5
V
ADC
µA
1.2
+1
±15
±0.85
±1
V
mV
µV/°C
Ω
mA
Bits
Bits
LSB
LSB
mV
µV/°C
%
%
ppm/°C
%
TA = 25°C, load = 1.2 mA
100 nF from BUF_VREF2V5 to AGND4
TA = 25°C
RL = 5 kΩ, CL = 100 pF²
1 LSB = 2.5 V/2¹²
Number of data bits
1 LSB = 2.5 V/2¹²
Guaranteed monotonic, 1 LSB =
2.5 V/2¹²
2.5 V internal reference,
DAC Output Code 0
0 V to internal VREF range
0 V to AVDD range
Excluding reference drift
% of full scale on DAC0
2.5
V
AVDDx − 0.15 V
Ω
µs
nV-sec
Settled to ±1 LSB
1 LSB change when the maximum
number of bits changes simultane-
ously in the DACxDAT register
±10
mV
1
nA
AVDDx − 1.2 V
7
pF
15
mV
When enabled in software
7
µs
AFECOMP, Bits[2:1] = 0
Indicates die temperature, see
Figure 9
0.5
°C
When precision calibrated by the
user⁵
1.43
V
ADC measured voltage for
temperature sensor channel without
calibration, TA = 25°C
2.85
2.9
V
32
sec
Default at power-up
Cycles
Years
TJ = 85°C
Rev. 0 | Page 5 of 23