參數(shù)資料
型號(hào)： AD7816ARMZ
廠商： ANALOG DEVICES INC
元件分類： 溫度/濕度傳感器
英文描述： DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 1Cel, SQUARE, SURFACE MOUNT
封裝： MICRO, SOIC-8
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 203K
代理商： AD7816ARMZ
–3–
REV. B
AD7816/AD7818
6–SPECIFICATIONS1 (VDD=2.7Vto5.5V,GND=0V,REFIN=2.5Vunless
otherwise noted)
Parameter
A Version
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE (AD7818 Only)
Sample Rate = 100 kSPS, Any Channel,
fIN = 20 kHz
Signal to (Noise + Distortion) Ratio
2
57
dB min
Total Harmonic Distortion
2
–65
dB max
–75 dB typ
Peak Harmonic or Spurious Noise
2
–67
dB typ
–75 dB typ
Intermodulation Distortion
2
fa = 19.9 kHz, fb = 20.1 kHz
Second Order Terms
–67
dB typ
Third Order Terms
–67
dB typ
Channel-to-Channel Isolation
2
–80
dB typ
fIN = 20 kHz
DC ACCURACY (AD7818 Only)
Any Channel
Resolution
10
Bits
Minimum Resolution for Which
No Missing Codes are Guaranteed
10
Bits
Relative Accuracy
2
±1LSB max
Differential Nonlinearity2
±1LSB max
Gain Error
2
±10
LSB max
Offset Error
2
±4LSB max
TEMPERATURE SENSOR
1
Measurement Error
External Reference VREF = 2.5 V
Ambient Temperature 25
°C
±2
°C max
TMIN to TMAX
±3
°C max
Measurement Error
On-Chip Reference
Ambient Temperature 25
°C
±2
°C max
TMIN to TMAX
±3
°C max
Temperature Resolution
1/4
°C/LSB
REFERENCE INPUT
3, 4 (AD7816 Only)
REFIN Input Voltage Range
3
2.625
V max
2.5 V + 5%
2.375
V min
2.5 V – 5%
Input Impedance
50
k
min
Input Capacitance
10
pF max
ON-CHIP REFERENCE
5
Nominal 2.5 V
Temperature Coefficient3
30
ppm/
°C typ
CONVERSION RATE
Track/Hold Acquisition Time4
400
ns max
Source Impedance < 10
Conversion Time
Temperature Sensor
27
s max
Channel 1
9
s max
(AD7818 Only)
POWER REQUIREMENTS
VDD
5.5
V max
For Specified Performance
2.7
V min
IDD
Logic Inputs = 0 V or VDD
Normal Operation
2
mA max
1.3 mA typ
Using External Reference
1.75
mA max
2.5 V External Reference Connected
Power-Down (VDD = 5 V)
10.75
A max
6
A typ
Power-Down (VDD = 3 V)
4.5
A max
2
A typ
Auto Power-Down Mode
VDD = 3 V
10 SPS Throughput Rate
6.4
W typ
See Power vs. Throughput Section for
1 kSPS Throughput Rate
48.8
W typ
Description of Power Dissipation in
10 kSPS Throughput Rate
434
W typ
Auto Power-Down Mode
Power-Down
13.5
W max
Typically 6
W
AD7816/AD7817/AD7818
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