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ADS8422IPFBT Scheda tecnica(PDF) 4 Page - Texas Instruments

Il numero della parte ADS8422IPFBT
Spiegazioni elettronici  16-BIT, 4-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE
PDF  29 Pages
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

ADS8422IPFBT Scheda tecnica(HTML) 4 Page - Texas Instruments

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SPECIFICATIONS (Continued)
ADS8422
SLAS512B – JUNE 2006 – REVISED DECEMBER 2006
T
A = –40°C to 85°C, +VA = 5 V, +VAREG = 5.25 V to 3 V, +VBD = 5 V to 2.7 V, fSAMPLE = 4 MSPS, Vref = 4.096 V (measured
with internal reference buffer) (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DYNAMIC CHARACTERISTICS
10 kHz
–114
Total harmonic distortion (THD)(1)
VIN = 8 Vpp
100 kHz
–102
dB
500 kHz
–100
10 kHz
93
Signal to noise ratio (SNR)
VIN = 8 Vpp
100 kHz
92
dB
500 kHz
90
10 kHz
92.5
Signal to noise + distortion (SINAD)
VIN = 8 Vpp
100 kHz
91.5
dB
500 kHz
89.5
10 kHz
116
Spurious free dynamic range (SFDR)
VIN = 8 Vpp
100 kHz
109
dB
500 kHz
106
–3dB Small signal bandwidth
30
MHz
Maximum input frequency, fi(max)(2)
VIN = 8 Vpp
2
MHz
VOLTAGE REFERENCE INPUT
Reference voltage at REFIN, Vref
3.9
4.096
4.15
V
Reference resistance
1000
M
Ω
INTERNAL REFERENCE OUTPUT
Internal reference start-up time
From 95% (+VA), with 1-
µF capacitor on REFOUT
25
ms
Reference voltage range, Vref
IO = 0, TA = 25°C
4.088
4.096
4.104
V
Source current
Static load
10
µA
Line regulation
+VA = 4.75 V to 5.25 V
±1
mV
Drift
IO = 0
±6
PPM/
°C
ANALOG COMMON-MODE, PIN 3
Output voltage range
IO = 0
VREF/2 - 0.016
VREF/2
VREF/2 + 0.016
V
Source current
Static load
200
µA
(1)
Calculated on the first nine harmonics of the input frequency.
(2)
ADC Sampling circuit is optimized to accept inputs until Nyquist frequency. Dynamic performance may degrade rapidly above fi(max).
4
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