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ADT7518 Datasheet(PDF) 3 Page - Analog Devices

No. de pieza ADT7518
Descripción Electrónicos  SPI/I2C Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output DAC
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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ADT7518 Datasheet(HTML) 3 Page - Analog Devices

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ADT7518
Rev. A | Page 3 of 40
SPECIFICATIONS
Table 1. Temperature range is as follows: A version: –40°C to +120°C. VDD = 2.7 V to 5.5 V, GND = 0 V, REFIN = 2.25 V, unless
otherwise noted.
Parameter1
Min
Typ
Max
Unit
Conditions/Comments
DAC DC PERFORMANCE2,3
Resolution
8
Bits
Relative Accuracy
±0.15
±1
LSB
Differential Nonlinearity
±0.02
±0.25
LSB
Guaranteed monotonic over all codes.
Offset Error
±0.4
±2
% of FSR
Gain Error
±0.3
±2
% of FSR
Lower Deadband
20
65
mV
Lower deadband exists only if offset error is
negative. See Figure 8.
Upper Deadband
60
100
mV
Upper deadband exists if VREF = VDD and offset
plus gain error is positive. See Figure 9.
Offset Error Drift4
–12
ppm of FSR/°C
Gain Error Drift4
–5
ppm of FSR/°C
DC Power Supply Rejection Ratio4
–60
dB
∆VDD = ±10%.
DC Crosstalk4
200
µV
See Figure 5.
ADC DC ACCURACY
Max VDD = 5 V.
Resolution
10
Bits
Total Unadjusted Error (TUE)
2
3
% of FSR
Offset Error
±0.5
% of FSR
Gain Error
±2
% of FSR
ADC BANDWIDTH
DC
Hz
ANALOG INPUTS5
Input Voltage Range
0
2.25
V
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
0
VDD
V
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
DC Leakage Current
±1
µA
Input Capacitance
5
20
pF
Input Resistance
10
MΩ
THERMAL CHARACTERISTICS6
INTERNAL TEMPERATURE SENSOR
Internal reference used. Averaging on.
Accuracy @ VDD = 3.3 V ±10%
±1.5
°C
TA = 85°C.
±0.5
±3
°C
TA= 0°C to +85°C.
±2
±5
°C
TA = –40°C to +120°C.
Accuracy @ VDD = 5 V ±5%
±2
±3
°C
TA = 0°C to +85°C.
±3
±5
°C
TA = –40°C to +120°C.
Resolution
10
Bits
Equivalent to 0.25°C.
Long-Term Drift
0.25
°C
Drift over 10 years if part is operated at 55°C.
THERMAL CHARACTERISTICS6
EXTERNAL TEMPERATURE SENSOR
External transistor = 2N3906.
Accuracy @ VDD = 3.3 V ± 10%
±1.5
°C
TA = 85°C.
±3
°C
TA = 0°C to +85°C.
±5
°C
TA = –40°C to +120°C.
Accuracy @ VDD = 5 V ± 5%
±2
±3
°C
TA = 0°C to +85°C.
±3
±5
°C
TA = –40°C to +120°C.
Resolution
10
Bits
Equivalent to 0.25°C.
Output Source Current
180
µA
High Level.
11
µA
Low Level.
THERMAL CHARACTERISTICS6
Thermal Voltage Output
8-Bit DAC Output
Resolution
1
°C


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