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參數(shù)資料
| 型號： | AD7894AR-10 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Metal Oxide Varistor (MOV); Voltage Rating AC, Vrms:130Vrms; Voltage Rating DC, Vdc:170VDC; Peak Surge Current (8/20uS), Itm:6000A; Clamping Voltage 8/20us Max :340V; Capacitance, Cd:650pF; Package/Case:14mm Disc |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 131K |
| 代理商： | AD7894AR-10 |
–2–
REV. 0
AD7894–SPECIFICATIONS
(V
DD
= +5 V
6
5%, GND = 0 V, REF IN = +2.5 V. All specifications T
MIN
to T
MAX
unless
otherwise noted.)
Parameter
A Versions
l
B Versions
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal to (Noise + Distortion) Ratio
3
@ +25
°
C
T
MIN
to T
MAX
Total Harmonic Distortion (THD)
3
78
77
–86
78
77
–86
dB min
dB min
dB max
f
IN
= 70 kHz Sine Wave, f
SAMPLE
= 160 kHz
See Figure 14
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 160 kHz,
Typically –87 dB. See Figure 15
f
IN
= 10 kHz Sine Wave, f
SAMPLE
= 160 kHz
fa = 9 kHz, fb
=
9.5 kHz, f
SAMPLE
= 160 kHz
Peak Harmonic or Spurious Noise
3
Intermodulation Distortion (IMD)
3
2nd Order Terms
3rd Order Terms
–92
–92
dB typ
–92
–92
–92
–92
dB typ
dB typ
DC ACCURACY
Resolution
Minimum Resolution for Which
No Missing Codes Are Guaranteed
Relative Accuracy
3
Differential Nonlinearity
3
AD7894-2
Positive Gain Error
3
Unipolar Offset Error
AD7894-10, AD7894-3 Only
Positive Gain Error
3
Negative Gain Error
3
Bipolar Zero Error
14
14
Bits
14
±
2
–1 to +1.5
14
±
1.5
–1 to +1.5
Bits
LSB max
LSB max
±
12
±
8
±
10
±
6
LSB max
LSB max
±
8
±
8
±
10
±
6
±
6
±
8
LSB max
LSB max
LSB max
ANALOG INPUT
AD7894-10
Input Voltage Range
Input Current
AD7894-3
Input Voltage Range
Input Current
AD7894-2
Input Voltage Range
Input Current
±
10
2
±
10
2
V
mA max
See Analog Input Section
±
2.5
1.5
±
2.5
1.5
V
mA max
See Analog Input Section
0 to +2.5
500
0 to +2.5
500
V
nA max
REFERENCE INPUT
REF IN Input Voltage Range
Input Current
Input Capacitance
4
2.375/2.625
1
10
2.375/2.625
1
10
V min/V max
μ
A max
pF max
2.5 V
±
5%
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN4
2.4
0.8
±
10
10
2.4
0.8
±
10
10
V min
V max
μ
A max
pF max
V
DD
= 5 V
±
5%
V
DD
= 5 V
±
5%
V
IN
= 0 V to V
DD
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Output Coding
AD7894-10, AD7894-3
AD7894-2
4.0
0.4
4.0
0.4
V min
V max
I
SOURCE
= 400
μ
A
I
SINK
= 1.6 mA
Twos Complement
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
Mode 1 Operation
Mode 2 Operation
5
Track/Hold Acquisition Time
3
5
10
0.35
5
10
0.35
μ
s max
μ
s max
μ
s max
SAMPLE AND HOLD
–3 dB Small Signal Bandwidth
Aperture Jitter
7.5
50
7.5
50
MHz typ
ps typ
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