 English |
|
|
|
|
|
|
|
| AMC7812 Datasheet, PDF (3/92 Pages) Texas Instruments – 12-Bit ANALOG MONITORING AND CONTROL SOLUTION with Multichannel ADC, DACs, and Temperature Sensors | |||
| |||
| ◁ |
AMC7812
www.ti.com
SBAS513D â JANUARY 2011 â REVISED OCTOBER 2012
ELECTRICAL CHARACTERISTICS
At TA = â40°C to +105°C, AVDD = DVDD = 4.5V to 5.5V, AVCC = +15V, AGND = DGND = 0V, IOVDD = 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
INL
Relative accuracy
Measured by line passing through codes 020h
and FFFh
±1 LSB
DNL
Differential nonlinearity
12-bit monotonic, Measured by line passing
through codes 020h and FFFh
±0.3
±1 LSB
TUE
Total unadjusted error
Offset error
TA = +25°C, DAC output = 5.0V
TA = +25°C, DAC output = 12.5V
TA = +25°C, DAC output = 0V to +5V,
code 020h
TA = +25°C, DAC output = 0V to +12.5V,
code 020h
±10 mV
±30 mV
±2 mV
±5 mV
Offset error temperature coefficient
±1
ppm/°C
Gain error
External reference, output = 0V to +5V
External reference, output = 0V to +12.5V
±0.025
-0.15
±0.15 %FSR
±0.3 %FSR
Gain temperature coefficient
±2
ppm/°C
DAC OUTPUT CHARACTERISTICS
Output voltage range(1)
Output voltage settling time(2)
Slew rate(2)
Short-circuit current(2)
VREF = 2.5V, gain = 2
VREF = 2.5V, gain = 5
DAC output = 0V to +5V, code 400h to C00h, to
½ LSB, from CS rising edge,
RL = 2kΩ, CL = 200pF
Full-scale current shorted to ground
0
0
3
1.5
30
5V
12.5 V
µs
V/µs
mA
Source within 200mV of supply, TA = +25°C
+10
mA
Load current
Sink within 300mV of supply, TA = +25°C
-10
mA
DAC output = 0V to +5V, code B33h. Source
and/or sink with voltage drop < 25mV, TA: -40°C
±8
mA
to 95°C(3)
Capacitive load stability(2)
DC output impedance(2)
RL = â
Code 800h
10
nF
0.3
Ω
Power-on overshoot
Digital-to-analog glitch energy
AVCC 0 to 5V, 2ms ramp
Code changes from 7FFh to 800h, 800h to 7FFh
5
mV
0.15
nV-s
Digital feedthrough
Device is not accessed
0.15
nV-s
Output noise
DAC REFERENCE INPUT
TA = +25°C, at 1kHz, code 800h, gain = 2,
excludes reference
f = 0.1Hz to 10Hz, excludes reference
81
nV/âHz
8
µVPP
Reference voltage input range
Input current(2)
INTERNAL REFERENCE
REF-DAC pin
VREF = 2.5V
1
170
2.6 V
µA
Output voltage
Output impedance
TA = +25°C, REF-OUT pin
2.495
2.5
0.4
2.505 V
Ω
Reference temperature coefficient
10
25 ppm/°C
(1) The output voltage must not be greater than AVCC. 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.
Copyright © 2011â2012, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links: AMC7812
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese