參數(shù)資料
型號(hào): AD7818ARZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 3/20頁(yè)
文件大小: 279K
描述: IC ADC 10BIT W/TEMP SENSOR 8SOIC
產(chǎn)品變化通告: Product Discontinuance 27/Oct/2011
標(biāo)準(zhǔn)包裝: 98
功能: 溫度監(jiān)控系統(tǒng)(傳感器)
傳感器類(lèi)型: 內(nèi)部
感應(yīng)溫度: -55°C ~ 125°C
精確度: ±2°C
拓?fù)洌?/td> ADC,多路復(fù)用器,寄存器庫(kù)
輸出類(lèi)型: MICROWIRE?,QSPI?,SPI?
輸出警報(bào):
輸出風(fēng)扇:
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SO
包裝: 管件
REV. C
AD7816/AD7817/AD7818
3
Parameter
A Version    Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE (AD7818 Only)
Sample Rate = 100 kSPS, Any Channel,
f
IN
 = 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
f
IN
 = 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
1
LSB max
Differential Nonlinearity
2
1
LSB max
Gain Error
2
10
LSB max
Offset Error
2
4
LSB max
TEMPERATURE SENSOR
1
Measurement Error
External Reference V
REF
 = 2.5 V
Ambient Temperature 25癈
2
癈 max
T
MIN
 to T
MAX
3
癈 max
Measurement Error
On-Chip Reference
Ambient Temperature 25癈
2
癈 max
T
MIN
 to T
MAX
3
癈 max
Temperature Resolution
1/4
癈/LSB
 REFERENCE INPUT
3, 4
(AD7816 Only)
REF
IN
 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 Coefficient
3
30
ppm/癈 typ
CONVERSION RATE
Track/Hold Acquisition Time
4
400
ns max
Source Impedance < 10 &
Conversion Time
Temperature Sensor
27
祍 max
Channel 1
9
祍 max
(AD7818 Only)
POWER REQUIREMENTS
V
DD
5.5
V max
For Specified Performance
2.7
V min
I
DD
Logic Inputs = 0 V or V
DD
Normal Operation
2
mA max
1.3 mA typ
Using External Reference
1.75
mA max
2.5 V External Reference Connected
Power-Down (V
DD
 = 5 V)
10.75
礎(chǔ) max
6 礎(chǔ) typ
Power-Down (V
DD
 = 3 V)
4.5
礎(chǔ) max
2 礎(chǔ) typ
Auto Power-Down Mode
V
DD
 = 3 V
10 SPS Throughput Rate
6.4
礧 typ
See Power vs. Throughput Section for
1 kSPS Throughput Rate
48.8
礧 typ
Description of Power Dissipation in
10 kSPS Throughput Rate
434
礧 typ
Auto Power-Down Mode
Power-Down
13.5
礧 max
Typically 6 礧
AD7816/AD7818
6
SPECIFICATIONS
1
(V
DD
 = 2.7 V to 5.5 V, GND = 0 V, REF
IN
 = 2.5 V unless
otherwise noted)
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