ADUC836_15 Datasheet, PDF (4/80 Pages) Analog Devices – MicroConverter, Dual 16-Bit ADCs with Embedded 62 kB Flash MCU

ADuC836
SPECIFICATIONS (continued)
Parameter
ADuC836
INTERNAL REFERENCE
ADC Reference
Reference Voltage
Power Supply Rejection
Reference Tempco
DAC Reference
Reference Voltage
Power Supply Rejection
Reference Tempco
1.25 ± 1%
45
100
2.5 ± 1%
50
±100
ANALOG INPUTS/REFERENCE INPUTS
Primary ADC
Differential Input Voltage Ranges^{9, 10}
Bipolar Mode (ADC0CON3 = 0)
Analog Input Current²
Analog Input Current Drift
Absolute AIN Voltage Limits²
Auxiliary ADC
Input Voltage Range^{9, 10}
Average Analog Input Current
Average Analog Input Current Drift²
Absolute AIN Voltage Limits^{2, 11}
External Reference Inputs
REFIN(+) to REFIN(–) Range²
Average Reference Input Current
Average Reference Input Current Drift
“NO Ext. REF” Trigger Voltage
ADC SYSTEM CALIBRATION
Full-Scale Calibration Limit
Zero-Scale Calibration Limit
Input Span
ANALOG (DAC) OUTPUT
Voltage Range
Resistive Load
Capacitive Load
Output Impedance
I_SINK
TEMPERATURE SENSOR
Accuracy
Thermal Impedance (_JA)
±20
±40
±80
±160
±320
±640
±1.28
±2.56
±1
±5
±5
±15
AGND + 100 mV
AV_DD – 100 mV
0 to V_REF
125
±2
AGND – 30 mV
AV_DD + 30 mV
1
AV_DD
1
±0.1
0.3
0.65
1.05  FS
–1.05  FS
0.8  FS
2.1  FS
0 to V_REF
0 to AV_DD
10
100
0.5
50
±2
90
52
Test Conditions/Comments
Unit
Initial Tolerance @ 25°C, V_DD = 5 V
Initial Tolerance @ 25°C, V_DD = 5 V
V min/max
dBs typ
ppm/°C typ
V min/max
dBs typ
ppm/°C typ
External Reference Voltage = 2.5 V
RN2, RN1, RN0 of ADC0CON Set to
0 0 0 (Unipolar Mode 0 mV to 20 mV)
0 0 1 (Unipolar Mode 0 mV to 40 mV)
0 1 0 (Unipolar Mode 0 mV to 80 mV)
0 1 1 (Unipolar Mode 0 mV to 160 mV)
1 0 0 (Unipolar Mode 0 mV to 320 mV)
1 0 1 (Unipolar Mode 0 mV to 640 mV)
1 1 0 (Unipolar Mode 0 V to 1.28 V)
1 1 1 (Unipolar Mode 0 V to 2.56 V)
T_MAX = 85°C
T_MAX = 125°C
T_MAX = 85°C
T_MAX = 125°C
mV
mV
mV
mV
mV
mV
V
V
nA max
nA max
pA/°C typ
pA/°C typ
V min
V max
Unipolar Mode, for Bipolar Mode
See Note 11
Input Current Will Vary with Input
Voltage on the Unbuffered Auxiliary ADC
V
nA/V typ
pA/V/°C typ
V min
V max
Both ADCs Enabled
NOXREF Bit Active if V_REF < 0.3 V
NOXREF Bit Inactive if V_REF > 0.65 V
V min
V max
A/V typ
nA/V/°C typ
V min
V max
V max
V min
V min
V max
DACRN = 0 in DACCON SFR
DACRN = 1 in DACCON SFR
From DAC Output to AGND
From DAC Output to AGND
V typ
V typ
k typ
pF typ
 typ
A typ
MQFP Package
CSP Package (Base Floating)¹²
°C typ
°C/W typ
°C/W typ
–4–
REV. A