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ADS7828EBIPWRQ1 Datasheet(PDF) 4 Page - Texas Instruments

No. de pieza ADS7828EBIPWRQ1
Descripción Electrónicos  12-BIT 8-CHANNEL SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH I2C??INTERFACE
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Fabricante Electrónico  TI1 [Texas Instruments]
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ADS7828EBIPWRQ1 Datasheet(HTML) 4 Page - Texas Instruments

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ADS7828-Q1
SBAS456A – DECEMBER 2008 – REVISED OCTOBER 2009.......................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS
+VDD = 2.7 V, VREF = 2.5 V, SCL clock frequency = 3.4 MHz (high-speed mode), over operating free-air temperature range
(unless otherwise noted)
ADS7828E
ADS7828EB
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Analog Input
Ileak
Leakage current
±1
±1
μA
Ci
Input capacitance
25
25
pF
Overall Performance
No missing codes
12
12
bits
Integral linearity error
±1
±2
±0.5
±1 LSB(1)
Differential linearity error
±1
±0.5
–1/+2
LSB
Offset error
±1
±3
±0.75
±2
LSB
Offset error match
±0.2
±1
±0.2
±1
LSB
Gain error
±1
±4
±0.75
±3
LSB
Gain error match
±0.2
±1
±0.2
±1
LSB
Vn
Noise
RMS
33
33
μV
PSRR
Power-supply ripple rejection
82
82
dB
Sampling Dynamics
High-speed mode: SCL = 3.4 MHz
50
50
Throughput frequency
Fast mode: SCL = 400 kHz
8
8
kHz
Standard mode: SCL = 100 kHz
2
2
Conversion time
6
6
μs
AC Accuracy
THD
Total harmonic distortion(2)
VIN = 2.5 VPP at 10 kHz
–82
–82
dB
Signal-to- ratio
VIN = 2.5 VPP at 10 kHz
72
72
dB
Signal-to-(noise+distortion)
VIN = 2.5 VPP at 10 kHz
71
71
dB
ratio
Spurious-free dynamic range
VIN = 2.5 VPP at 10 kHz
86
86
dB
Channel-to-channel isolation
120
120
dB
Voltage Reference Output
VO
Output voltage
2.475
2.5
2.525
2.475
2.5
2.525
V
ppm/°
Internal reference drift
15
15
C
Internal reference on
110
110
zo
Output impedance
Internal reference off
1
1
G
IQ
Quiescent current
850
850
μA
Voltage Reference Input
ri
Input resistance
1
1
G
Current drain
20
20
μA
Digital Input/Output
VOL
Low-level output voltage
Minimum 3-mA sink current
0.4
0.4
V
IIH
High-level input current
VIH = +VDD + 0.5 V
10
10
μA
IIL
Low-level input current
VIL = –0.3 V
–10
–10
μA
(1)
LSB means least significant bit; with VREF equal to 2.5 V, one LSB is 610 μV.
(2)
THD is measured to the ninth harmonic.
4
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Copyright © 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): ADS7828-Q1


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