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ADS7820PB Datasheet(PDF) 2 Page - Texas Instruments

No. de pieza ADS7820PB
Descripción Electrónicos  ANALOG-to-DIGITAL CONVERTER
Download  11 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7820PB Datasheet(HTML) 2 Page - Texas Instruments

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2
®
ADS7820
SPECIFICATIONS
ELECTRICAL
TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference, unless otherwise specified.
ADS7820P/U
ADS7820PB/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.
Guaranteed
RESOLUTION
12
D
Bits
ANALOG INPUT
Voltage Ranges
0 to +5
D
V
Impedance
10
D
k
Capacitance
35
D
pF
THROUGHPUT SPEED
Conversion Time
5.7
8
DD
µs
Complete Cycle
Acquire and Convert
10
D
µs
Throughput Rate
100
D
kHz
DC ACCURACY
Integral Linearity Error
±1.0
±0.5
LSB(1)
Differential Linearity Error
±1.0
±0.5
LSB
No Missing Codes
D
Bits
Transition Noise(2)
0.1
D
LSB
Full Scale Error(3,4)
±0.5
±0.25
%
Full Scale Error Drift
±7
±5
ppm/
°C
Full Scale Error(3,4)
Ext. 2.5000V Ref
±0.5
±0.25
%
Full Scale Error Drift
Ext. 2.5000V Ref
±2
D
ppm/
°C
Offset Error
±8
±4mV
Offset Error Drift
±2
D
ppm/
°C
Power Supply Sensitivity
+4.75V < VD < +5.25V
±0.75
±0.5
LSB
(VDIG = VANA = VD)
AC ACCURACY
Spurious-Free Dynamic Range
fIN = 45kHz
80
D
dB(5)
Total Harmonic Distortion
fIN = 45kHz
–80
D
dB
Signal-to-(Noise+Distortion)
fIN = 45kHz
70
72
dB
Signal-to-Noise
fIN = 45kHz
70
72
dB
Full-Power Bandwidth(6)
250
D
kHz
SAMPLING DYNAMICS
Aperture Delay
40
D
ns
Transient Response
FS Step
2
D
µs
Overvoltage Recovery(7)
150
D
ns
REFERENCE
Internal Reference Voltage
2.48
2.5
2.52
DD
D
V
Internal Reference Source Current
1
D
µA
(Must use external buffer.)
External Reference Voltage Range
2.3
2.5
2.7
DD
D
V
for Specified Linearity
External Reference Current Drain
Ext. 2.5000V Ref
100
D
µA
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
DD
V
VIH
+2.0
VD +0.3V
DD
V
IIL
±10
D
µA
IIH
±10
D
µA
DIGITAL OUTPUTS
Data Format
Parallel 12 bits
Data Coding
Straight Binary
VOL
ISINK = 1.6mA
+0.4
D
V
VOH
ISOURCE = 500µA+4
D
V
Leakage Current
High-Z State,
±5
D
µA
VOUT = 0V to VDIG
Output Capacitance
High-Z State
15
D
pF
DIGITAL TIMING
Bus Access Time
83
D
ns
Bus Relinquish Time
83
D
ns


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