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| AMC7832_15 Datasheet, PDF (10/72 Pages) Texas Instruments – AMC7832 12-Bit Analog Monitor and Control Solution with Multi-Channel ADC, Bipolar DACs, Temperature Sensor and GPIO Ports | |||
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AMC7832
SLAS836 â MARCH 2014
www.ti.com
Electrical Characteristics (continued)
The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These
specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of
the product containing it. AVDD = DVDD = +4.5 to +5.5-V, AVCC = +12-V, AVEE = -12-V, IOVDD = +1.8 to +5.5-V, AGND =
DGND = 0-V, AVSSA,B,C,D = 0-V (DAC groups in positive ranges) or -12-V (DAC groups in negative range), DAC output range
= 0 to 10-V for all groups, no load on the DACs, TA = -40°C to +105°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX UNIT
ADC AND TEMPERATURE SENSOR SPECIFICATIONS
Resolution
12
Bits
INL
Integral nonlinearity
Unipolar input channels
Bipolar input channels
±0.5
±0.75
±1 LSB
±1.5 LSB
DNL
Differential nonlinearity
Specified monotonic. All input channels
±0.5
±1 LSB
UNIPOLAR ANALOG INPUTS: LV_ADC12 to LV_ADC16
Absolute input voltage range
GND â 0.2
AVDD +
0.2
V
Full scale input range
Input capacitance
DC input leakage current
VREF measured at REF_CMP terminal
Unselected ADC input
0
2 Ã VREF
V
34
pF
±10 µA
Offset error
±2
±5 LSB
Offset error match
Gain error(7)
±2.5
LSB
±1
±5 LSB
Gain error match
±1
LSB
Update time
Single unipolar input, temperature sensor
disabled
11.5
µs
BIPOLAR ANALOG INPUTS: ADC_0 to ADC_11
Absolute input voltage range
â13
+13 V
Full scale input range
-12.5
12.5 V
Input resistance
175
kΩ
Offset error
Gain error(7)
±5
±10 LSB
±5
±10 LSB
Update time
Single bipolar input, temperature sensor
disabled
34.5
µs
TEMPERATURE SENSOR
Operating range
-40
125 °C
Accuracy
Resolution
TA = -40°C to 125°C, AVDD = +5-V
LSB size
±1.25
0.25
±2.5 °C
°C
Update time
All ADC input channels disabled
256
µs
AUTOCYCLE UPDATE TIME
Autocycle update time
All 17 ADC inputs enabled, temperature
sensor disabled
471.5
µs
All 17 ADC inputs and temperature
sensor enabled
727.5
µs
(7) Internal reference contribution not included.
10
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Copyright © 2014, Texas Instruments Incorporated
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