Datasheet
AMC7812
SBAS513E –JANUARY 2011–REVISED SEPTEMBER 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At T
A
= –40°C to +105°C, AV
DD
= DV
DD
= 4.5V to 5.5V, AV
CC
= +15V, AGND = DGND = 0V, IOV
DD
= 2.7V to 5.5V, internal
2.5V reference, and the DAC output span = 0V to 5V, unless otherwise noted.
AMC7812
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DIGITAL LOGIC: All Except SCL, SDA, ALARM, and GPIO
IOV
DD
= +5V 2.1 0.3 + IOV
DD
V
V
IH
Input high voltage
IOV
DD
= +3.3V 2.1 0.3 + IOV
DD
V
IOV
DD
= +5V –0.3 0.8 V
V
IL
Input low voltage
IOV
DD
= +3.3V –0.3 0.8 V
Input current ±1 µA
Input capacitance 5 pF
IOV
DD
= +5V, sourcing 3mA 4.8 V
V
OH
Output high voltage
IOV
DD
= +3.3V, sourcing 3mA 2.9 V
IOV
DD
= +5V, sinking 3mA 0.4 V
V
OL
Output low voltage
IOV
DD
= +3.3V, sinking 3mA 0.4 V
High-impedance leakage ±5 µA
High-impedance output capacitance 10 pF
DIGITAL LOGIC: SDA, SCL (I
2
C-Compatible Interface)
IOV
DD
= +5V 2.1 0.3 + IOV
DD
V
V
IH
Input high voltage
IOV
DD
= +3.3V 2.1 0.3 + IOV
DD
V
IOV
DD
= +5V –0.3 0.8 V
V
IL
Input low voltage
IOV
DD
= +3.3V –0.3 0.8 V
Input current ±5 µA
Input capacitance 5 pF
IOV
DD
= +5V, sinking 3mA 0 0.4 V
V
OL
Output low voltage
IOV
DD
= +3.3V, sinking 3mA 0 0.4 V
High-impedance leakage ±5 µA
High-impedance output capacitance 10 pF
TIMING REQUIREMENTS
From AV
DD
, DV
DD
≥ 2.7V and AV
CC
≥ 4.5V to
Power-on delay 100 250 µs
normal operation
Power-down recovery time from CS rising edge 70 µs
Reset delay Delay to normal operation from any reset 100 250 µs
Convert pulse width 20 ns
Reset pulse width 20 ns
POWER-SUPPLY REQUIREMENTS
AV
DD
AV
DD
must be ≥ (V
REF
+ 1.2V) +2.7 +5.5 V
AV
DD
and DV
DD
combined,
7.9 12.5 mA
normal operation, no DAC load
AI
DD
AV
DD
and DV
DD
combined,
1.6 mA
all blocks in power down
AV
CC
+4.5 +18 V
IV
CC
AV
CC
, no load, DACs at code 800h 6.5 mA
Normal operation
(10)
, AV
DD
= DV
DD
= 5V, AV
CC
Power dissipation 95 120 mW
= 15V
DV
DD
+2.7 +5.5 V
IOV
DD
+2.7 +5.5 V
TEMPERATURE RANGE
Specified performance –40 +105 °C
(10) No DAC load, all DACs at 800h and both ADCs at the fastest auto conversion rate
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