AMC7823 Datasheet, PDF (7/48 Pages) Texas Instruments – ANALOG MONITORING AND CONTROL CIRCUIT

AMC7823
www.ti.com
SLAS453A – APRIL 2005 – REVISED OCTOBER 2005
ELECTRICAL CHARACTERISTICS: +3 V (continued)
At –40°C to +85°C, AV_DD, DV_DD, BV_DD = 3 V, using external 1.25-V reference (unless otherwise noted).
AMC7823
PARAMETER
CONDITIONS
MIN TYP
MAX
PRECISION CURRENT SOURCE
Output current range
0.01
10
Output current accuracy
Output current drift
Output impedance
Compliance voltage of pin
PRECISION_I_OUTPUT
I_out = 100 µA
I_out = 100 µA
I_out = 100 µA
AV_DD = 2.7 V, I_out = 10 mA
99.5 100.0
40
100
1.9
2
100.5
Power-supply rejection ratio
60
VOLTAGE REFERENCE (V_REF)
Internal reference voltage⁽⁴⁾
At 25°C
1.247 1.25
1.253
Internal reference drift
–40°C to 85°C
±20
Output impedance of pin EXT_REF_IN
as internal reference output
10
Short-circuit current
125
External reference voltage
1.20
1.28
External reference input resistance
10
External reference input capacitance
5
TEMPERATURE SENSOR
Temperature range
–40
85
Resolution
1.6
Accuracy
±2.0
LEVEL OF PIN GALR AND DAV
I_OH = 0.3 mA
I_OL = 125 µA
DIGITAL INPUT/OUTPUT, EXCEPT PIN GLAR AND DAV
2.4
DV_DD
0
0.4
V_IH
V_{IL Logic level}
V_OH
V_OL
Input capacitance
I_IH = 5 µA
I_IL = –5 µA
I_OH = –3 mA
I_OL = 3 mA
2.1
BV_DD + 0.3
0
0.6
2.4
BV_DD
0
0.4
5
POWER SUPPLY REQUIREMENTS
Power-supply voltage
AV_DD
DV_DD
BV_DD ⁽⁵⁾
Quiescent current of AV_DD
Specified performance
Specified performance
Specified performance
In normal operation
All power-down
2.70
3
3.3
2.70
3.3
2.70
3.3
10
15
1
Quiescent current of DV_DD
0.3
Quiescent current of BV_DD
0.1
Power dissipation
60
TEMPERATURE RANGE
Specified performance
–40
+85
Storage
–65
+150
UNITS
mA
µA
ppm/°C
MΩ
V
dB
V
ppm/°C
kΩ
µA
V
kΩ
pF
°C
°C
°C
V
V
V
V
V
V
pF
V
V
V
mA
mA
mA
mA
mW
°C
°C
(4) Bit GREF in AMC Status/Configuration Register determines the internal reference voltage. GREF must be cleared when AV_DD is less
than 5 V and the internal reference is selected (see AMC Status/Configuration Register for details).
(5) BV_DD must be not greater than AV_DD or DV_DD.
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