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參數(shù)資料
| 型號(hào)： | AD7819 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 8-Bit Sampling ADC(200kSPS,8位采樣A/D轉(zhuǎn)換器) |
| 中文描述： | 8位采樣ADC（速度高達(dá)200ksps，8位采樣的A / D轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 2/12頁(yè) |
| 文件大?。?/td> | 231K |
| 代理商： | AD7819 |
–2–
REV. 0
AD7819–SPECIFICATIONS
1
(GND = 0 V, V
REF
= +V
DD
= 3 V
6
10% to 5 V
6
10%). All specifications –40
8
C
Parameter
Y Version
to +125
8
C unless otherwise noted.)
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to (Noise + Distortion) Ratio
1
Total Harmonic Distortion (THD)
1
Peak Harmonic or Spurious Noise
1
Intermodulation Distortion
2
2nd Order Terms
3rd Order Terms
f
IN
= 30 kHz, f
SAMPLE
= 136 kHz
48
–70
–70
dB min
dB typ
dB typ
fa = 29.1 kHz; fb = 29.8 kHz
–77
–77
dB typ
dB typ
DC ACCURACY
Resolution
Minimum Resolution for Which
No Missing Codes Are Guaranteed
Relative Accuracy
1
Differential Nonlinearity (DNL)
1
Total Unadjusted Error
1
Gain Error
1
Offset Error
1
8
Bits
8
±
0.5
±
0.5
±
1
±
0.5
±
0.5
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
ANALOG INPUT
Input Voltage Range
0
V
REF
±
1
15
V min
V max
μ
A max
pF mx
Input Leakage Current
2
Input Capacitance
2
REFERENCE INPUTS
2
V
REF
Input Voltage Range
1.2
V
DD
±
1
20
V min
V max
μ
A max
pF max
Input Leakage Current
Input Capacitance
LOGIC INPUTS
2
V
INH,
Input High Voltage
V
INL,
Input Low Voltage
Input Current, I
IN
Input Capacitance, C
IN
2.0
0.4
±
1
8
V min
V max
μ
A max
pF max
(0.8 V max, V
DD
= 5 V)
Typically 10 nA, V
IN
= 0 V to V
DD
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
High Impedance Leakage Current
High Impedance Capacitance
2.4
0.4
±
1
15
V min
V max
μ
A max
pF max
I
SOURCE
= 200
μ
A
I
SINK
= 200
μ
A
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
1
4.5
100
μ
s max
ns max
See DC Acquisition Section
POWER SUPPLY
V
DD
I
DD
Normal Operation
Power-Down
Power Dissipation
Normal Operation
Power-Down
Auto Power-Down (Mode 2)
1 kSPS Throughput
10 kSPS Throughput
50 kSPS Throughput
2.7–5.5
Volts
For Specified Performance
Digital Inputs = 0 V or V
DD
3.5
1
mA max
μ
A max
V
DD
= 5 V
17.5
5
mW max
μ
W max
V
DD
= 5 V
V
DD
= 3 V
57.75
577.5
2.89
μ
W max
μ
W max
mW max
NOTES
1
See Terminology section.
2
Sample tested during initial release and after any redesign or process change that may affect this parameter.
Specifications subject to change without notice.
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