Datasheet ADS1015

ADS1014/5
Status
ALERT/RDY
(active high)
8 µs
Converting Converting Converting Converting
Conversion Ready Conversion Ready Conversion Ready
TH_H
TH_L
Time
Time
Time
Successful
SMBus Alert
Response
Successful
SMBus Alert
Response
Latching
Comparator
Output
Non-Latching
Comparator
Output
Input Signal
TH_H
TH_L
Time
Time
Time
Successful
SMBus Alert
Response
Latching
Comparator
Output
Non-Latching
Comparator
Output
Input Signal
WINDOW COMPARATOR MODETRADITIONAL COMPARATOR MODE
15
ADS1013 , ADS1014 , ADS1015
www.ti.com SBAS473E –MAY 2009–REVISED JANUARY 2018
Product Folder Links: ADS1013 ADS1014 ADS1015
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8.3.8 Conversion Ready Pin (ADS1014 and ADS1015 Only)
The ALERT/RDY pin can also be configured as a conversion ready pin. Set the most-significant bit of the
Hi_thresh register to 1 and the most-significant bit of Lo_thresh register to 0 to enable the pin as a conversion
ready pin. The COMP_POL bit continues to function as expected. Set the COMP_QUE[1:0] bits to any 2-bit
value other than 11 to keep the ALERT/RDY pin enabled, and allow the conversion ready signal to appear at the
ALERT/RDY pin output. The COMP_MODE and COMP_LAT bits no longer control any function. When
configured as a conversion ready pin, ALERT/RDY continues to require a pullup resistor. The ADS101x provide
an approximately 8-µs conversion ready pulse on the ALERT/RDY pin at the end of each conversion in
continuous-conversion mode, as shown in Figure 14. In single-shot mode, the ALERT/RDY pin asserts low at the
end of a conversion if the COMP_POL bit is set to 0.
Figure 13. ALERT Pin Timing Diagram
Figure 14. Conversion Ready Pulse in Continuous-Conversion Mode