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| AMC7812B_15 Datasheet, PDF (3/92 Pages) Texas Instruments – 12-Bit Analog Monitoring and Control Solution with Multichannel ADC, DACs, and Temperature Sensors | |||
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AMC7812B
www.ti.com
SBAS625A â SEPTEMBER 2013 â REVISED SEPTEMBER 2013
ELECTRICAL CHARACTERISTICS
At TA = â40°C to +105°C, AVDD = DVDD = 4.5 V to 5.5 V, AVCC = +15 V, AGND = DGND = 0 V, IOVDD = 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
MIN
TYP
MAX UNIT
DAC PERFORMANCE
DAC DC ACCURACY
Resolution
12
Bits
INL
Relative accuracy
TA = â40°C to +105°C, measured by line passing
through codes 020h and FFFh
TA = â40°C to +125°C, measured by line passing
through codes 020h and FFFh
±1 LSB
±1.25 LSBs
DNL
Differential nonlinearity
TA = â40°C to +125°C, measured by line passing
through codes 020h and FFFh
±0.3
±1 LSB
TUE
Total unadjusted error
Offset error
TA = +25°C, DAC output = 5.0 V
TA = +25°C, DAC output = 12.5 V
TA = +25°C, DAC output = 0 V to +5 V,
code 020h
TA = +25°C, DAC output = 0 V to +12.5 V,
code 020h
±10
mV
±30
mV
±2
mV
±5
mV
Offset error temperature coefficient
±1
ppm/°C
Gain error
TA = â40°C to +125°C, external reference,
output = 0 V to +5 V
TA = â40°C to +125°C, external reference,
output = 0 V to +12.5 V
±0.025
â0.15
±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)
TA = â40°C to +125°C, VREF = 2.5 V, gain = 2
TA = â40°C to +125°C, VREF = 2.5 V, gain = 5
DAC output = 0 V to +5 V, code 400h to C00h,
to 1/2 LSB, from CS rising edge, RL = 2 kΩ,
CL = 200 pF
Full-scale current shorted to ground
0
5
V
0
12.5
V
3
µs
1.5
V/µs
30
mA
Source within 200 mV of supply, TA = +25°C
+10
mA
Load current
Sink within 300 mV of supply, TA = +25°C
â10
mA
DAC output = 0 V to +5 V, code B33h. Source and
sink with voltage drop < 25 mV,
±8
mA
TA = â40°C to +95°C
Capacitive load stability(2)
RL = infinite
10
nF
DC output impedance(2)
Code 800h
0.3
Ω
Power-on overshoot
Digital-to-analog glitch energy
AVCC 0 V to 5 V, 2-ms 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 1 kHz, code 800h, gain = 2,
excludes reference
f = 0.1 Hz to 10 Hz, excludes reference
81
nV/âHz
8
µVPP
Reference voltage input range
Input current(2)
TA = â40°C to +125°C, REF-DAC pin
VREF = 2.5 V
1
170
2.6
V
µA
(1) The output voltage must not be greater than AVCC. See the DAC Output section for further details.
(2) Sampled during initial release to ensure compliance; not subject to production testing.
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: AMC7812B
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