參數(shù)資料
型號(hào)： ADT7518
廠商： Analog Devices, Inc.
元件分類： 溫度/濕度傳感器
英文描述： SPI/I2C Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output DAC
中文描述： SPI/I2C兼容，溫度傳感器，4通道ADC和四路電壓輸出DAC
文件頁數(shù)： 3/40頁
文件大?。?/td> 1217K
代理商： ADT7518
ADT7518
SPECIFICATIONS
Table 1. Temperature range is as follows: A version: –40°C to +120°C. V
DD
= 2.7 V to 5.5 V, GND = 0 V, REF
IN
= 2.25 V, unless
otherwise noted.
Parameter
1
Min
Typ
Max
DAC DC PERFORMANCE
2,3
Resolution
8
Relative Accuracy
±0.15
±1
Differential Nonlinearity
±0.02
±0.25
Offset Error
±0.4
±2
Gain Error
±0.3
±2
Lower Deadband
20
65
Rev. A | Page 3 of 40
Unit
Bits
LSB
LSB
% of FSR
% of FSR
mV
Conditions/Comments
Guaranteed monotonic over all codes.
Lower deadband exists only if offset error is
negative. See Figure 8.
Upper deadband exists if V
REF
= V
DD
and offset
plus gain error is positive. See Figure 9.
V
DD
= ±10%.
See Figure 5.
Max V
DD
= 5 V.
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
AIN1 to AIN4. C4 = 0 in Control Configuration 3.
Internal reference used. Averaging on.
Upper Deadband
60
100
mV
Offset Error Drift
4
Gain Error Drift
4
DC Power Supply Rejection Ratio
4
DC Crosstalk
4
ADC DC ACCURACY
Resolution
Total Unadjusted Error (TUE)
Offset Error
Gain Error
ADC BANDWIDTH
ANALOG INPUTS
5
Input Voltage Range
DC Leakage Current
Input Capacitance
Input Resistance
THERMAL CHARACTERISTICS
6
INTERNAL TEMPERATURE SENSOR
Accuracy @ V
DD
= 3.3 V ±10%
Accuracy @ V
DD
= 5 V ±5%
Resolution
Long-Term Drift
THERMAL CHARACTERISTICS
6
EXTERNAL TEMPERATURE SENSOR
Accuracy @ V
DD
= 3.3 V ± 10%
Accuracy @ V
DD
= 5 V ± 5%
Resolution
Output Source Current
THERMAL CHARACTERISTICS
6
Thermal Voltage Output
8-Bit DAC Output
Resolution
0
0
–12
–5
–60
200
2
5
10
10
3
±0.5
±2
DC
2.25
V
DD
±1
20
ppm of FSR/°C
ppm of FSR/°C
dB
μV
Bits
% of FSR
% of FSR
% of FSR
Hz
V
V
μA
pF
M
±0.5
±2
±2
±3
0.25
±1.5
±3
±5
±3
±5
10
°C
°C
°C
°C
°C
Bits
°C
T
A
= 85°C.
T
A
= 0°C to +85°C.
T
A
= –40°C to +120°C.
T
A
= 0°C to +85°C.
T
A
= –40°C to +120°C.
Equivalent to 0.25°C.
Drift over 10 years if part is operated at 55°C.
External transistor = 2N3906.
±2
±3
180
11
±1.5
±3
±5
±3
±5
10
°C
°C
°C
°C
°C
Bits
μA
μA
T
A
= 85°C.
T
A
= 0°C to +85°C.
T
A
= –40°C to +120°C.
T
A
= 0°C to +85°C.
T
A
= –40°C to +120°C.
Equivalent to 0.25°C.
High Level.
Low Level.
1
°C
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