Datasheet

REV. B
–5–
ADuC824
Parameter ADuC824BS Test Conditions/Comments Unit
TRANSDUCER BURNOUT CURRENT SOURCES
AIN+ Current –100 AIN+ is the Selected Positive Input to nA typ
the Primary ADC
AIN– Current +100 AIN– is the Selected Negative Input to nA typ
the Auxiliary ADC
Initial Tolerance @ 25°C Drift ± 10 % typ
Drift 0.03 %/°C typ
EXCITATION CURRENT SOURCES
Output Current –200 Available from Each Current Source µA typ
Initial Tolerance @ 25°C ± 10 % typ
Drift 200 ppm/°C typ
Initial Current Matching @ 25°C ± 1 Matching Between Both Current Sources % typ
Drift Matching 20 ppm/°C typ
Line Regulation (AV
DD
)1 AV
DD
= 5 V + 5% µA/V typ
Load Regulation 0.1 µA/V typ
Output Compliance AV
DD
– 0.6 V max
AGND min
LOGIC INPUTS
All Inputs Except SCLOCK, RESET,
and XTAL1
V
INL
, Input Low Voltage 0.8 DV
DD
= 5 V V max
0.4 DV
DD
= 3 V V max
V
INH
, Input High Voltage 2.0 V min
SCLOCK and RESET Only
(Schmitt-Triggered Inputs)
2
V
T+
1.3/3 DV
DD
= 5 V V min/V max
0.95/2.5 DV
DD
= 3 V V min/V max
V
T–
0.8/1.4 DV
DD
= 5 V V min/V max
0.4/1.1 DV
DD
= 3 V V min/V max
V
T+
– V
T–
0.3/0.85 DV
DD
= 5 V V min/V max
0.3/0.85 DV
DD
= 3 V V min/V max
Input Currents
Port 0, P1.2–P1.7, EA ± 10 V
IN
= 0 V or V
DD
µA max
SCLOCK, SDATA/MOSI, MISO, SS
12
–10 min, –40 max V
IN
= 0 V, DV
DD
= 5 V, Internal Pull-Up µA min/µA max
± 10 V
IN
= V
DD
, DV
DD
= 5 V µA max
RESET ± 10 V
IN
= 0 V, DV
DD
= 5 V µA max
35 min, 105 max V
IN
= V
DD
, DV
DD
= 5 V, µA min/µA max
Internal Pull-Down
P1.0, P1.1, Ports 2 and 3 ± 10 V
IN
= V
DD
, DV
DD
= 5 V µA max
–180 V
IN
= 2 V, DV
DD
= 5 V µA min
–660 µA max
–20 V
IN
= 450 mV, DV
DD
= 5 V µA min
–75 µA max
Input Capacitance 5 All Digital Inputs pF typ
CRYSTAL OSCILLATOR (XTAL1 AND XTAL2)
Logic Inputs, XTAL1 Only
V
INL
, Input Low Voltage 0.8 DV
DD
= 5 V V max
0.4 DV
DD
= 3 V V max
V
INH
, Input High Voltage 3.5 DV
DD
= 5 V V min
2.5 DV
DD
= 3 V V min
XTAL1 Input Capacitance 18 pF typ
XTAL2 Output Capacitance 18 pF typ