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ADS8881CDGSR Datasheet(PDF) 8 Page - Texas Instruments

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No. de pieza ADS8881CDGSR
Descripción Electrónicos  Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS8881CDGSR Datasheet(HTML) 8 Page - Texas Instruments

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ADS8881C, ADS8881I
SBAS547D – MAY 2013 – REVISED AUGUST 2015
www.ti.com
Electrical Characteristics (continued)
All minimum and maximum specifications are at AVDD = 3 V, DVDD = 3 V, VREF = 5 V, VCM = VREF / 2 V,
and fSAMPLE = 1 MSPS, over the operating free-air temperature range, unless otherwise noted.
Typical specifications are at TA = 25°C, AVDD = 3 V, and DVDD = 3 V.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DYNAMIC CHARACTERISTICS
At 1 kHz, VREF = 5 V
98
99.9
SINAD
Signal-to-noise + distortion(6)
At 10 kHz, VREF = 5 V
98.7
dB
At 100 kHz, VREF = 5 V
93.3
At 1 kHz, VREF = 5 V
98.5
100
SNR
Signal-to-noise ratio(6)
At 10 kHz, VREF = 5 V
99.5
dB
At 100 kHz, VREF = 5 V
93.5
At 1 kHz, VREF = 5 V
–115
THD
Total harmonic distortion(6)(7) At 10 kHz, VREF = 5 V
–112
dB
At 100 kHz, VREF = 5 V
–102
At 1 kHz, VREF = 5 V
115
Spurious-free dynamic
SFDR
At 10 kHz, VREF = 5 V
112
dB
range(6)
At 100 kHz, VREF = 5 V
102
BW–3dB
–3-dB small-signal bandwidth
30
MHz
POWER-SUPPLY REQUIREMENTS
AVDD
Analog supply
2.7
3
3.6
Power-supply
Digital supply range for SCLK > 40 MHz
2.7
3
3.6
V
voltage
DVDD
Digital supply range for SCLK < 40 MHz
1.65
1.8
3.6
Supply current
AVDD
1-MHz sample rate, AVDD = 3 V
1.8
2.4
mA
1-MHz sample rate, AVDD = 3 V
5.5
7.2
mW
PVA
Power dissipation
100-kHz sample rate, AVDD = 3 V
0.55
10-kHz sample rate, AVDD = 3 V
55
μW
Device power-down
IAPD
50
nA
current(8)
DIGITAL INPUTS: LOGIC FAMILY (CMOS)
1.65 V < DVDD < 2.3 V
0.8 × DVDD
DVDD + 0.3
VIH
High-level input voltage
V
2.3 V < DVDD < 3.6 V
0.7 × DVDD
DVDD + 0.3
1.65 V < DVDD < 2.3 V
–0.3
0.2 × DVDD
VIL
Low-level input voltage
V
2.3 V < DVDD < 3.6 V
–0.3
0.3 × DVDD
ILK
Digital input leakage current
±10
±100
nA
DIGITAL OUTPUTS: LOGIC FAMILY (CMOS)
VOH
High-level output voltage
IO = 500-μA source, CLOAD = 20 pF
0.8 × DVDD
DVDD
V
VOL
Low-level output voltage
IO = 500-μA sink, CLOAD = 20 pF
0
0.2 × DVDD
V
TEMPERATURE RANGE
ADS8881C
0
70
Operating free-air
TA
°C
temperature
ADS8881I
–40
85
(6)
All specifications expressed in decibels (dB) refer to the full-scale input (FSR) and are tested with an input signal 0.5 dB below full-scale,
unless otherwise specified.
(7)
Calculated on the first nine harmonics of the input frequency.
(8)
The device automatically enters a power-down state at the end of every conversion, and remains in power-down during the acquisition
phase.
8
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Copyright © 2013–2015, Texas Instruments Incorporated
Product Folder Links: ADS8881C ADS8881I


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