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ADS1271IPWR Datasheet(PDF) 30 Page - Texas Instruments

Part # ADS1271IPWR
Description  24-Bit, Wide Bandwidth Analog-to-Digital Converter
PDF  40 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

ADS1271IPWR Datasheet(HTML) 30 Page - Texas Instruments

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ADS1271
SBAS306F − NOVEMBER 2004 − REVISED OCTOBER 2007
www.ti.com
30
1.8V to 3.3V (1)
Tie to
Either
DVDD
or GND
+5V
Differential
Inputs
50
Ω
50
Ω
50
Ω
50
Ω
50
Ω
100
Ω
+5V
+
+
50
Ω
10
µF
10
µF0.1µF
0.47
µF
0.1
µF
+
0.1
µF
100pF
100pF
10
µF
+5V
1nF
100
µF
0.1
µF
0.1
µF
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREFP
VREFN
DGND
DVDD
CLK
SCLK
DRDY/
FSYNC
DOUT
AINP
AINN
AGND
AVDD
MODE
FORMAT
SYNC/
PDWN
DIN
ADS1271
27MHz
Clock
Source
REF3125
100
Ω
1k
Ω
1k
Ω
10nF
OPA350
(2)
NOTE: (1) 1.8V recommended. (2) Recommended
circuit for reference noise filtering.
Figure 68. Basic Connection Drawing
+15V(1)
NOTES: (1) Bypass with 10
µFand 0.1µF capacitors.
(2) 2.7nF for Low−Power mode.
−15V(1)
V
REF
V
IN
49.9
Ω
AINP
OPA1632
AINN
V
OCM
0.1
µF
1k
Ω
1k
Ω
1k
Ω
1k
Ω
49.9
Ω
1.5nF(2)
1.5nF(2)
Figure 69. Basic Differential Input Signal Interface
+15V(1)
NOTES: (1) Bypass with 10
µF and 0.1µF capacitors.
(2) 10nF for Low−Power mode.
−15V(1)
V
REF
V
IN
OPA1632
49.9
Ω
AINP
AINN
V
ODIFF =0.25 × VIN
V
OCOMM =VREF
V
OCM
0.1
µF
249
Ω
1k
Ω
249
Ω
1k
Ω
49.9
Ω
5.6nF(2)
5.6nF(2)
Figure 70. Basic Single-Ended Input Signal
Interface



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