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ADS7824UBE4 bảng dữ liệu(PDF) 2 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  4 Channel, 12-Bit Sampling CMOS A/D Converter
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ADS7824UBE4 bảng dữ liệu(HTML) 2 Page - Texas Instruments

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2
®
ADS7824
SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, fS = 40kHz, VS1 = VS2 = VS = +5V ±5%, using external reference, CONTC = 0V, unless otherwise specified.
ADS7824P, U
ADS7824PB, UB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject
to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not
authorize or warrant any BURR-BROWN product for use in life support devices and/or systems.
RESOLUTION
12
T(1)
Bits
ANALOG INPUT
Voltage Range
±10V
T
V
Impedance
Channel On or Off
45.7
T
k
Capacitance
35
T
pF
THROUGHPUT SPEED
Conversion Time
20
T
µs
Acquisition Time
5
T
µs
Multiplexer Settling Time
Includes Acquisition
5
T
µs
Complete Cycle (Acquire and Convert)
25
T
µs
Complete Cycle (Acquire and Convert)
CONTC = +5V
40
T
µs
Throughput Rate
40
T
kHz
DC ACCURACY
Integral Linearity Error
±0.15
±1
T
±0.5
LSB(2)
Differential Linearity Error
±0.15
±1
T
±0.5
LSB
No Missing Codes
Guaranteed
T
Transition Noise(3)
0.1
T
LSB
Full Scale Error(4)
Internal Reference
±0.5
±0.25
%
Full Scale Error Drift
Internal Reference
±7
±5
ppm/
°C
Full Scale Error(4)
±0.5
±0.25
%
Full Scale Error Drift
±2
T
ppm/
°C
Bipolar Zero Error
±10
T
mV
Bipolar Zero Error Drift
±2
T
ppm/
°C
Channel-to-Channel Mismatch
±0.1
±0.1
%
Power Supply Sensitivity
+4.75 < VS < +5.25
±0.5
T
LSB
AC ACCURACY
Spurious-Free Dynamic Range(5)
fIN = 1kHz
80
90
TT
dB
Total Harmonic Distortion
fIN = 1kHz
–90
–80
TT
dB
Signal-to-(Noise+Distortion)
fIN = 1kHz
70
73
72
T
dB
Signal-to-Noise
fIN = 1kHz
70
73
72
T
dB
Channel Separation(6)
fIN = 1kHz
90
100
TT
dB
–3dB Bandwidth
2
T
MHz
Useable Bandwidth(7)
90
T
kHz
SAMPLING DYNAMICS
Aperture Delay
40
T
ns
Transient Response(8)
FS Step
5
T
µs
Overvoltage Recovery(9)
1
T
µs
REFERENCE
Internal Reference Voltage
2.48
2.5
2.52
TT
T
V
Internal Reference Source Current
1
T
µA
(Must use external buffer)
External Reference Voltage Range
2.3
2.5
2.7
TT
T
V
for Specified Linearity
External Reference Current Drain
VREF = +2.5V
100
T
µA
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
TT
V
VIH
+2.4
VS +0.3V
TT
V
IIL
±10
T
µA
IIH
±10
T
µA
DIGITAL OUTPUTS
Data Format
Parallel in two bytes; Serial
T
Data Coding
Binary Two's Complement
T
VOL
ISINK = 1.6mA
+0.4
T
V
VOH
ISOURCE = 500µA+4
T
V
Leakage Current
High-Z State, VOUT = 0V to VS
±5
T
µA
Output Capacitance
High-Z State
15
T
pF


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