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ADS7280IPWG4 Datasheet(PDF) 6 Page - Texas Instruments

Part # ADS7280IPWG4
Description  LOW-POWER, 14-BIT, 1MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7280IPWG4 Datasheet(HTML) 6 Page - Texas Instruments

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ADS7279
ADS7280
SBAS436A – MAY 2008 – REVISED JUNE 2009 ............................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At TA = –40°C to +85°C, +VA = 2.7V to 3.6V, +VBD = 1.65V to 1.5x(+VA), VREF = 2.5V, fSAMPLE = 1MHz for 3V ≤ +VA ≤ 3.6V,
and fSAMPLE = 900kHz for 3V < +VA ≤ 2.7V using external clock, unless otherwise noted.
ADS7279, ADS7280
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DYNAMIC CHARACTERISTICS
VIN = 2.5VPP at 10kHz
–100.8
THD
Total harmonic distortion(4)
dB
VIN = 2.5VPP at 100kHz
–88.4
VIN = 2.5VPP at 10kHz
81
83.1
SNR
Signal-to-noise ratio
dB
VIN = 2.5VPP at 100kHz
82
VIN = 2.5VPP at 10kHz
83
SINAD
Signal-to-noise + distortion
dB
VIN = 2.5VPP at 100kHz
81.4
VIN = 2.5VPP at 10kHz
102.6
SFDR
Spurious-free dynamic range
dB
VIN = 2.5VPP at 100kHz
89.8
–3dB small-signal bandwidth
30
MHz
CLOCK
Internal conversion clock frequency
21
22
23.5
MHz
Used as I/O clock only
42
SCLK external serial clock
MHz
As I/O clock and conversion clock
1
42
EXTERNAL VOLTAGE REFERENCE INPUT
fSAMPLE ≤ 500kSPS, 2.7V ≤ +VA < 3V
0.3
2.525
fSAMPLE ≤ 500kSPS, 3V ≤ +VA < 3.6V
0.3
3
Input
VREF [REF+ – (REF–)]
VREF
reference
fSAMPLE > 500kSPS, 2.7V ≤ +VA < 3V
2.475
2.525
V
range
fSAMPLE > 500kSPS, 3V ≤ +VA < 3.6V
2.475
3
(REF–) – AGND
–0.1
0.1
Resistance(5)
Reference input
40
k
DIGITAL INPUT/OUTPUT
Logic family—CMOS
VIH
High-level input voltage
(+VA × 1.5)V
≥ +VBD ≥ 1.65V
0.65 × (+VBD)
+VBD + 0.3
V
VIL
Low-level input voltage
(+VA × 1.5)V
≥ +VBD ≥ 1.65V
–0.3
0.35 × (+VBD)
V
II
Input current
VI = +VBD or BDGND
–50
50
nA
CI
Input capacitance
5
pF
(+VA × 1.5)V
≥ +VBD ≥ 1.65V,
VOH
High-level output voltage
+VBD – 0.6
+VBD
V
IO = 100µA
(+VA × 1.5)V
≥ +VBD ≥ 1.65V,
VOL
Low-level output voltage
0
0.4
V
IO = 100µA
CO
Output capacitance
5
pF
CL
Load capacitance
30
pF
Data format—straight binary
(4)
Calculated on the first nine harmonics of the input frequency.
(5)
Can vary ±30%.
6
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Copyright © 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): ADS7279 ADS7280


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