AMC7812B Datasheet, PDF (5/92 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors

AMC7812B
www.ti.com
SBAS625A – SEPTEMBER 2013 – REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS (continued)
At T_A = –40°C to +105°C, AV_DD = DV_DD = 4.5 V to 5.5 V, AV_CC = +15 V, AGND = DGND = 0 V, IOV_DD = 2.7 V to 5.5 V,
internal 2.5-V reference, and the DAC output span = 0 V to 5 V, unless otherwise noted.
PARAMETER
TEST CONDITIONS
INTERNAL ADC REFERENCE BUFFER
Offset
INTERNAL TEMPERATURE SENSOR
T_A = +25°C
Operating range
Accuracy
Resolution
AV_DD = 5 V, T_A = –40°C to +125°C
AV_DD = 5 V, T_A = 0°C to +100°C
Per LSB
Conversion rate
External temperature sensors are disabled
EXTERNAL TEMPERATURE SENSOR (Using 2N3906 external transistor)
Operating range
Limited by external diode
Accuracy ^{(5) (6)}
Resolution
AV_DD = 5 V, T_A = 0°C to +100°C,
T_D = –40°C to +150°C
AV_DD = 5 V, T_A = –40°C to +100°C,
T_D = –40°C to +150°C
Per LSB
Conversion rate per sensor
With resistance cancellation
(RC bit = '1')
Without resistance cancellation
(RC bit = '0')
DIGITAL LOGIC: GPIO⁽⁷⁾⁽⁸⁾ and ALARM
V_IH
Input high voltage
V_IL
Input low voltage
V_OL
Output low voltage
IOV_DD = +5 V
T_A = –40°C to +125°C, IOV_DD = +3.3 V
IOV_DD = +5 V
T_A = –40°C to +125°C, IOV_DD = +3.3 V
T_A = –40°C to +125°C, IOV_DD = +5 V, sinking 5 mA
T_A = –40°C to +125°C, IOV_DD = +3.3 V,
sinking 2 mA
High-impedance leakage
High-impedance output capacitance
DIGITAL LOGIC: All Except SCL, SDA, ALARM, and GPIO
V_IH
Input high voltage
V_IL
Input low voltage
Input current
IOV_DD = +5 V
T_A = –40°C to +125°C, IOV_DD = +3.3 V
IOV_DD = +5 V
T_A = –40°C to +125°C, IOV_DD = +3.3 V
Input capacitance
V_OH
Output high voltage
V_OL
Output low voltage
High-impedance leakage
IOV_DD = +5 V, sourcing 3 mA
IOV_DD = +3.3 V, sourcing 3 mA
IOV_DD = +5 V, sinking 3 mA
IOV_DD = +3.3 V, sinking 3 mA
High-impedance output capacitance
MIN
TYP
–40
±1.25
0.125
15
–40
0.125
72
93
33
44
MAX UNIT
±5
mV
+125
°C
±2.5
°C
±1.5
°C
°C
ms
+150
°C
±1.5
°C
±2
°C
°C
100
ms
47
ms
2.1
2.2
–0.3
–0.3
2.1
2.2
–0.3
–0.3
4.8
2.9
0.3 + IOV_DD
V
0.3 + IOV_DD
V
0.8
V
0.7
V
0.4
V
0.4
V
5
µA
10
pF
0.3 + IOV_DD
V
0.3 + IOV_DD
V
0.8
V
0.7
V
±1
µA
5
pF
V
V
0.4
V
0.4
V
±5
µA
10
pF
(5) T_D is the external diode temperature.
(6) Auto conversion mode disabled.
(7) For pins GPIO0 to GPIO3, the external pull-up resistor must be connected to a voltage less than or equal to 5.5 V.
(8) For pins GPIO4 to GPIO7, the external pull-up resistor must be connected to a voltage less than or equal to AV_DD.
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