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ADS8381 Datasheet(PDF) 4 Page - Texas Instruments

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Part No. ADS8381
Description  18-BIT, 580-kHz, UNIPOLAR INPUT, MICRO POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

ADS8381 Datasheet(HTML) 4 Page - Texas Instruments

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ADS8381
SLAS364D − APRIL 2002 − REVISED FEBRUARY 2005
www.ti.com
4
SPECIFICATIONS (CONTINUED)
TA = −40°C to 85°C, +VA = +5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 580 kHz (unless otherwise noted)
PARAMETER
TEST
ADS8381IB
ADS8381I
UNIT
PARAMETER
TEST
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
Dynamic Characteristics
1 kHz
−112
−110
Total harmonic distortion (THD) (see Note 1)
10 kHz
−106
−100
dB
Total harmonic distortion (THD) (see Note 1)
50 kHz
−98
−95
dB
100 kHz
−95
−90
1 kHz
88
87
Signal to noise ratio (SNR) (see Note 1)
10 kHz
88
87
dB
Signal to noise ratio (SNR) (see Note 1)
50 kHz
88
87
dB
100 kHz
88
87
1 kHz
88
87
Signal to noise + distortion
10 kHz
88
87
dB
Signal to noise + distortion
(SINAD) (see Note 1)
50 kHz
87
86
dB
(SINAD) (see Note 1)
100 kHz
87
86
1 kHz
113
112
Spurious free dynamic range (SFDR) (see
10 kHz
108
98
dB
Spurious free dynamic range (SFDR) (see
Note 1)
50 kHz
99
96
dB
Note 1)
100 kHz
97
90
−3dB Small signal bandwidth
3
3
MHz
Voltage Reference Input
Reference voltage at REFIN, Vref
2.5
4.096
4.2
2.5
4.096
4.2
V
Reference resistance (see Note 2)
500
500
k
Reference current drain
fs = 580 kHz
1
1
mA
(1) Calculated on the first nine harmonics of the input frequency
(2) Can vary ±20%


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