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ADS1262 Datasheet(PDF) 39 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

Part # ADS1262
Description  ADS126x 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter
PDF  134 Pages
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Manufacturer  TAOS [TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS]
Direct Link  http://www.taosinc.com
Logo TAOS - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

ADS1262 Datasheet(HTML) 39 Page - TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS

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Conversions (DRDY)
+ 105%
PGAD_ALM bit
Alarms latched during
conversion cycle
- 105%
+105% VREF
VOUTP
VOUTN
S
Q
Q
R
+
±
+
±
PGA
ADC
Digital
Filter
+
±
-105% VREF
Conversion
Start Reset
STATUS
DATA 1
DATA 2
DATA 3
DATA 4
PGAD_ALM
Bit 1 of STATUS byte
Latch
VREF Comparators
PGA Output
difference amplifier
Data Bytes
CRC/CHK
ADS1262, ADS1263
www.ti.com
SBAS661B – FEBRUARY 2015 – REVISED JULY 2015
9.3.7.1 PGA Differential Output Monitor
ADC1 incorporates a differential PGA output voltage monitor. This voltage monitor triggers an alarm when the
magnitude of the differential PGA output voltage is more positive than +105% or more negative than –105% of
full scale, but only during a conversion cycle. The alarm event, corresponding to the conversion cycle when the
alarm occurred, is set in the status byte (PGAD_ALM). For the next conversion, the alarm resets. If the
magnitude of differential output voltage is within the range of ±105% of full-scale range, the alarm remains reset.
The PGA differential monitor block diagram is shown in Figure 73.
Figure 73. PGA Differential Overload Monitor
Figure 74 shows an example of the differential overrange monitor event.
Figure 74. PGA Differential Alarm
Copyright © 2015, Texas Instruments Incorporated
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Product Folder Links: ADS1262 ADS1263



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