Datasheet

AMC7812
www.ti.com SBAS513E –JANUARY 2011–REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS
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
DAC PERFORMANCE
DAC DC ACCURACY
Resolution 12 Bits
Measured by line passing through codes 020h
INL Relative accuracy ±1 LSB
and FFFh
12-bit monotonic, Measured by line passing
DNL Differential nonlinearity ±0.3 ±1 LSB
through codes 020h and FFFh
T
A
= +25°C, DAC output = 5.0V ±10 mV
TUE Total unadjusted error
T
A
= +25°C, DAC output = 12.5V ±30 mV
T
A
= +25°C, DAC output = 0V to +5V,
±2 mV
code 020h
Offset error
T
A
= +25°C, DAC output = 0V to +12.5V,
±5 mV
code 020h
Offset error temperature coefficient ±1 ppm/°C
External reference, output = 0V to +5V ±0.025 ±0.15 %FSR
Gain error
External reference, output = 0V to +12.5V -0.15 ±0.3 %FSR
Gain temperature coefficient ±2 ppm/°C
DAC OUTPUT CHARACTERISTICS
V
REF
= 2.5V, gain = 2 0 5 V
Output voltage range
(1)
V
REF
= 2.5V, gain = 5 0 12.5 V
DAC output = 0V to +5V, code 400h to C00h, to
Output voltage settling time
(2)
½ LSB, from CS rising edge, 3 µs
R
L
= 2kΩ, C
L
= 200pF
Slew rate
(2)
1.5 V/µs
Short-circuit current
(2)
Full-scale current shorted to ground 30 mA
Source within 200mV of supply, T
A
= +25°C +10 mA
Sink within 300mV of supply, T
A
= +25°C -10 mA
Load current
DAC output = 0V to +5V, code B33h. Source
and/or sink with voltage drop < 25mV, T
A
: -40°C ±8 mA
to 95°C
(3)
Capacitive load stability
(2)
R
L
= ∞ 10 nF
DC output impedance
(2)
Code 800h 0.3 Ω
Power-on overshoot AV
CC
0 to 5V, 2ms ramp 5 mV
Digital-to-analog glitch energy Code changes from 7FFh to 800h, 800h to 7FFh 0.15 nV-s
Digital feedthrough Device is not accessed 0.15 nV-s
T
A
= +25°C, at 1kHz, code 800h, gain = 2,
81 nV/√Hz
excludes reference
Output noise
f = 0.1Hz to 10Hz, excludes reference 8 µV
PP
DAC REFERENCE INPUT
Reference voltage input range REF-DAC pin 1 2.6 V
Input current
(2)
V
REF
= 2.5V 170 µA
(1) The output voltage must not be greater than AV
CC
. See the DAC Output section for more details.
(2) Sampled during initial release to ensure compliance; not subject to production testing.
(3) Valid only for material manufactured on or after October 2012.
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