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參數(shù)資料
| 型號： | AD7883BR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | LC2MOS 12-Bit, 3.3 V Sampling ADC |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| 封裝： | SOIC-24 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 349K |
| 代理商： | AD7883BR |
REV. 0
–2–
AD7883–SPECIFICATIONS
(V
DD
= +3 V to +3.6 V, V
REF
= V
DD
, AGND = DGND = 0 V, f
CLKIN
= 2 MHz,
MODE = Logic High. All specifications T
MIN
to T
MAX
unless othewise noted.)
Parameter
B Versions
1
Units
DYNAMIC PERFORMANCE
2
Signal-to-Noise Ratio
3
(SNR)
69
dB min
Test Conditions/Comments
Typically SNR Is 71 dB
V
IN
= 1 kHz Sine Wave, f
SAMPLE
= 50 kHz
V
IN
= 1 kHz Sine Wave, f
SAMPLE
= 50 kHz
V
IN
= 1 kHz, f
SAMPLE
= 50 kHz
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Second Order Terms
Third Order Terms
DC ACCURACY
Resolution
–80
–80
dB typ
dB typ
–80
–80
dB typ
dB typ
fa = 0.983 kHz, fb = 1.05 kHz, f
SAMPLE
= 50 kHz
fa = 0.983 kHz, fb = 1.05 kHz, f
SAMPLE
= 50 kHz
12
Bits
All DC ACCURACY Specifications Apply for the Two
Analog Input Ranges
Integral Nonlinearity
Differential Nonlinearity
Full-Scale Error
Bipolar Zero Error
Unipolar Offset Error
ANALOG INPUT
Input Voltage Ranges
±
2
±
1
±
20
±
12
±
3
LSB max
LSB max
LSB max
LSB max
LSB max
Guaranteed Monotonic
0 to V
REF
±
V
REF
10
5/12
Volts
Volts
M
min
k
min/max
See Figure 4
See Figure 5
0 to V
REF
Range
8 k
typical:
±
V
REF
Range
Input Resistance
REFERENCE INPUT
V
REF
(For Specified Performance)
I
REF
LOGIC INPUTS
CONVST
,
RD
,
CS
, CLKIN
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN
MODE INPUT
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN
LOGIC OUTPUTS
DB11–DB0,
BUSY
Output High Voltage, V
OH
Output Low Voltage, V
OL
DB11–DB0
Floating-State Leakage Current
Floating-State Output Capacitance
4
CONVERSION
Conversion Time
Track/Hold Acquisition Time
POWER REQUIREMENTS
V
DD
I
DD
Normal Power Mode @ +25
°
C
T
to T
Power Save Mode @ +25
°
C
T
MIN
to T
MAX
Power Dissipation
Normal Power Mode @ +25
°
C
T
to T
Power Save Mode @ +25
°
C
T
MIN
to T
MAX
NOTES
1
Temperature range is as follows: B Versions, –40
°
C to +85
°
C.
2
V
= 0 to V
.
3
SNR calculation includes distortion and noise components.
4
Sample tested @ +25
°
C to ensure compliance.
Specifications subject to change without notice.
V
DD
1.2
V
mA max
2.1
0.6
±
10
10
V min
V max
μ
A max
pF max
V
IN
= 0 V or V
DD
4
V
DD
–0.2
0.2
±
100
10
V
V
μ
A max
pF max
V
IN
= 0 V or V
DD
4
2.4
0.4
V min
V max
I
SOURCE
= 200
μ
A
I
SINK
= 0.8 mA
±
10
10
μ
A max
pF max
15
5
μ
s max
μ
s max
f
CLKIN
= 2 MHz
+3.3
V nom
+3 V to +3.6 V for Specified Performance
3
4
400
800
mA max
mA max
μ
A max
μ
A max
Typically 2 mA; MODE = V
DD
Typically 2.5 mA; MODE = V
Logic Inputs @ 0 V or V
DD
; MODE = 0 V; Typically 250
μ
A
Logic Inputs @ 0 V or V
DD
; MODE = 0 V; Typically 300
μ
A
11
15
1.5
3
mW max
mW max
mW max
mW max
V
DD
= 3.6 V: Typically 8 mW; MODE = V
DD
V
DD
= 3.6 V: Typically 9 mW; MODE = V
V
DD
= 3.6 V: Typically 1 mW; MODE = 0 V
V
DD
= 3.6 V: Typically 1 mW; MODE = 0 V
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