AMC7823_15 Datasheet, PDF (4/55 Pages) Texas Instruments – ANALOG MONITORING AND CONTROL CIRCUIT

AMC7823
SLAS453F – APRIL 2005 – REVISED MARCH 2012
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ELECTRICAL CHARACTERISTICS: +5V (continued)
At –40°C to +85°C, AV_DD = 5V, DV_DD = 5V, BV_DD = 3V to 5V, using external 2.5V reference, unless otherwise noted.
AMC7823
PARAMETER
TEST CONDITIONS
MIN TYP
MAX UNIT
PRECISION CURRENT SOURCE
Output current range
0.01
10 mA
Output current accuracy
Output current drift
Output impedance
Compliance voltage of pin
PRECISION_I_OUTPUT
I_out = 100μA
I_out = 100μA
I_out = 100μA
I_out = 10mA
99.5 100.0
40
100
3 4.25
100.5
μA
ppm/°C
MΩ
V
Power-supply rejection ratio
60
dB
VOLTAGE REFERENCE (V_REF)
Internal reference voltage⁽⁵⁾
At +25°C
2.495 2.50
2.505
V
Internal reference drift
–40°C to +85°C
±15
ppm/°C
Output impedance of pin EXT_REF_IN
as internal reference output
10
kΩ
Short-circuit current
250
μA
External reference voltage
1.20
2.55
V
External reference input resistance
Internal reference selected
Internal reference de-selected
10
kΩ
1
MΩ
External reference input capacitance
5
pF
TEMPERATURE SENSOR
Temperature range
–40
+85
°C
Resolution
Accuracy
LEVEL OF PIN GALR AND DAV
V_REF = 2.5V
V_REF = 1.25V
V_REF = 2.5V
V_REF = 1.25V
+3.2
°C
+1.6
°C
±4
°C
±2.0
°C
I_OH = 0.7mA
I_OL = 180μA
DIGITAL INPUT/OUTPUT, EXCEPT PIN GALR AND DAV
2.4
BV_DD
V
0
0.4
V
V_IH
V_IL
Logic level
V_OH
V_OL
V_IH
V_IL
Logic level
V_OH
V_OL
Input capacitance
BV_DD = 5V, I_IH = 5μA
BV_DD = 5V, I_IL = –5μA
BV_DD = 5V, I_OH = –3mA
BV_DD = 5V, I_OL = 3mA
BV_DD = 3V, I_IH = 5μA
BV_DD = 3V, I_IL = –5μA
BV_DD = 3V, I_OH = –3mA
BV_DD = 3V, I_OL = 3mA
3.5
BV_DD + 0.3
V
0
0.8
V
4
BV_DD
V
0
0.4
V
2.1
BV_DD + 0.3
V
0
0.6
V
2.4
BV_DD
V
0
0.4
V
5
pF
(5) Bit GREF in AMC Status/Configuration Register determines the internal reference voltage. The internal V_REF = 2.5V when GREF = 1,
and the internal V_REF = 1.25V when GREF = 0 (see AMC Status/Configuration Register for details).
4
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