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ADS7279IRSAR Arkusz danych(PDF) 3 Page - Texas Instruments

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Numer części ADS7279IRSAR
Szczegółowy opis  LOW-POWER, 14-BIT, 1MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7279IRSAR Arkusz danych(HTML) 3 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
ADS7279
ADS7280
www.ti.com ............................................................................................................................................................... SBAS436A – MAY 2008 – REVISED JUNE 2009
At TA = –40°C to +85°C, +VA = 4.5V to 5.5V, +VBD = +1.65V to +5.5V, VREF = 5V, and fSAMPLE = 1MHz, unless otherwise
noted.
ADS7279, ADS7280
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ANALOG INPUT
FSR
Full-scale input voltage(1)
+IN – (–IN) or (+INx – COM)
0
VREF
V
+IN, +IN0, +IN1
AGND – 0.2
+VA + 0.2
Absolute input voltage
V
–IN or COM
AGND – 0.2
AGND + 0.2
Input capacitance
45
pF
No ongoing conversion,
Input leakage current
50
nA
dc input
At dc
109
Input channel isolation, ADS7280 only
dB
VI = ±1.25VPP at 50kHz
101
SYSTEM PERFORMANCE
Resolution
14
Bits
NMC
No missing codes
14
Bits
INL
Integral linearity
–1
±0.4
1
LSB(2)
DNL
Differential linearity
–1
±0.4
1
LSB(2)
EO
Offset error(3)
–1.25
±0.3
1.25
mV
Offset error drift
FSR = 5V
±0.2
ppm/°C
EG
Gain error
–0.25
±0.05
0.25
%FSR
Gain error drift
±0.5
ppm/°C
At dc
70
CMRR
Common-mode rejection ratio
dB
VI = 0.4VPP at 1MHz
50
Noise
33
µV
RMS
PSRR
Power-supply rejection ratio
At FFFFh output code(3)
78
dB
SAMPLING DYNAMICS
tCONV
Conversion time
18
CCLK
tSAMPLE1
Manual trigger
3
Acquisition time
CCLK
tSAMPLE2
Auto trigger
3
Throughput rate
1
MHz
Aperture delay
5
ns
Aperture jitter
10
ps
Step response
100
ns
Overvoltage recovery
100
ns
(1)
Ideal input span; does not include gain or offset error.
(2)
LSB means least significant bit.
(3)
Measured relative to an ideal full-scale input [(+IN) – (–IN)] of 4.096V when +VA = 5V.
Copyright © 2008–2009, Texas Instruments Incorporated
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Product Folder Link(s): ADS7279 ADS7280


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