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AD7816ACHIPS 数据表(PDF) 2 Page - Analog Devices

部件名 AD7816ACHIPS
功能描述  Single- and 4-Channel, 9 us, 10-Bit ADCs with On-Chip Temperature Sensor
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7816ACHIPS 数据表(HTML) 2 Page - Analog Devices

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REV. C
–2–
AD7816/AD7817/AD7818
Parameter
A Version
*B Version
*S Version
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
Sample Rate = 100 kSPS, Any
Channel, fIN = 20 kHz
Signal to (Noise + Distortion) Ratio
2
58
58
58
dB min
Total Harmonic Distortion
2
–65
–65
–65
dB max
–75 dB typ
Peak Harmonic or Spurious Noise
2
–65
–65
–65
dB max
–75 dB typ
Intermodulation Distortion
2
fa =19.9 kHz, fb = 20.1 kHz
Second Order Terms
–67
–67
–67
dB typ
Third Order Terms
–67
–67
–67
dB typ
Channel-to-Channel Isolation
2
–80
–80
–80
dB typ
fIN = 20 kHz
DC ACCURACY
Any Channel
Resolution
10
10
10
Bits
Minimum Resolution for Which
No Missing Codes are Guaranteed
10
10
10
Bits
Relative Accuracy
2
1
1
1LSB max
Differential Nonlinearity
2
1
1
1LSB max
Gain Error
2
2
2
2LSB max
External Reference
10
10
+20/–10
LSB max
Internal Reference
Gain Error Match
2
1/2
1/2
1/2
LSB max
Offset Error
2
2
2
2LSB max
Offset Error Match
1/2
1/2
1/2
LSB max
TEMPERATURE SENSOR
1
Measurement Error
External Reference VREF = 2.5 V
Ambient Temperature 25
°C
2
1
2
°C max
TMIN to TMAX
3
2
3
°C max
Measurement Error
On-Chip Reference
Ambient Temperature 25
°C
2.25
2.25
2.25
°C max
TMIN to TMAX
3
3
6
°C max
Temperature Resolution
1/4
1/4
1/4
°C/LSB
REFERENCE INPUT
3, 4
REFIN Input Voltage Range
3
2.625
2.625
2.625
V max
2.5 V + 5%
2.375
2.375
2.375
V min
2.5 V – 5%
Input Impedance
40
40
40
k
Ω min
Input Capacitance
10
10
10
pF max
ON-CHIP REFERENCE
5
Nominal 2.5 V
Temperature Coefficient
3
80
80
150
ppm/
°C typ
CONVERSION RATE
Track/Hold Acquisition Time
4
400
400
400
ns max
Source Impedance < 10
Conversion Time
Temperature Sensor
27
27
27
µs max
Channels 1 to 4
9
9
9
µs max
POWER REQUIREMENTS
VDD
5.5
5.5
5.5
V max
For Specified Performance
2.7
2.7
2.7
V min
IDD
Logic Inputs = 0 V or VDD
Normal Operation
2
2
2
mA max
1.6 mA typ
Using External Reference
1.75
1.75
1.75
mA max
2.5 V External Reference Connected
Power-Down (VDD = 5 V)
10
10
12.5
µA max
5.5
µA typ
Power-Down (VDD = 3 V)
4
4
4.5
µA max
2
µA typ
Auto Power-Down Mode
VDD = 3 V
10 SPS Throughput Rate
6.4
6.4
6.4
µW typ
See Power vs. Throughput Section for
1 kSPS Throughput Rate
48.8
48.8
48.8
µW typ
Description of Power Dissipation in
10 kSPS Throughput Rate
434
434
434
µW typ
Auto Power-Down Mode
Power-Down
12
12
13.5
µW max
Typically 6
µW
AD7817–SPECIFICATIONS1 (V
DD = 2.7 V to 5.5 V, GND = 0 V, REFIN = 2.5 V unless otherwise noted)


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