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ADS8881IDRCT Datasheet(PDF) 4 Page - Texas Instruments

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Part # ADS8881IDRCT
Description  18-Bit, 1-MSPS, Serial Interface, microPower, Miniature, True-Differential Input, SAR Analog-to-Digital Converter
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS8881IDRCT Datasheet(HTML) 4 Page - Texas Instruments

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ADS8881
SBAS547A – MAY 2013 – REVISED JULY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All minimum and maximum specifications are at TA = –40°C to +85°C, AVDD = 3 V, DVDD = 3 V, VREF = 5 V, VCM = VREF /
2 V, and fSAMPLE = 1 MSPS, 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
dB
SINAD
Signal-to-noise + distortion(6)
At 10 kHz, VREF = 5 V
98.7
dB
At 100 kHz, VREF = 5 V
93.3
dB
At 1 kHz, VREF = 5 V
98.5
100
dB
SNR
Signal-to-noise ratio(6)
At 10 kHz, VREF = 5 V
99.5
dB
At 100 kHz, VREF = 5 V
93.5
dB
At 1 kHz, VREF = 5 V
–115
dB
THD
Total harmonic distortion(6)(7)
At 10 kHz, VREF = 5 V
–112
dB
At 100 kHz, VREF = 5 V
–102
dB
At 1 kHz, VREF = 5 V
115
dB
SFDR
Spurious-free dynamic range(6)
At 10 kHz, VREF = 5 V
112
dB
At 100 kHz, VREF = 5 V
102
dB
BW-3dB
–3-dB small-signal bandwidth
30
MHz
EXTERNAL REFERENCE INPUT
VREF
Input range
2.5
5
V
Reference input current
During conversion, 1-MHz sample rate, mid-code
350
μA
Decoupling capacitor at the REF
CREF
10
22
µF
input
POWER-SUPPLY REQUIREMENTS
AVDD
Analog supply
2.7
3
3.6
V
Power-supply
Digital supply range
1.65
3
3.6
V
voltage
DVDD
Digital supply range for specified performance
2.7
3
3.6
V
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
mW
10-kHz sample rate, AVDD = 3 V
55
μW
IAPD
Device power-down current(8)
50
nA
LOGIC FAMILY (CMOS)
VIH
0.7 × DVDD
DVDD + 0.3
V
Logic level (digital inputs)
VIL
–0.3
0.3 × DVDD
V
VOH
IO = 500-μA source, CLOAD = 20 pF
0.8 × DVDD
DVDD
V
Logic level (digital outputs)
VOL
IO = 500-μA sink, CLOAD = 20 pF
0
0.2 × DVDD
V
TEMPERATURE RANGE
TA
Operating free-air temperature
–40
+85
°C
(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.
4
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: ADS8881


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