Main Features ............................................................................................................................................ 6
Function Description ................................................................................................................................. 6
Limiting Value ........................................................................................................................................... 7
ADO — ADC Conversion Data Register (Address 09H )............................................................... 18
2.2.9
ADS — ADC Conversion Data Read Standard Register (Address 0AH ) ...................................... 18
3
Function Description ..................................................................................................................................... 19
Input voltage Level Shifter ...................................................................................................................... 19
3.3
PGA and ADC ......................................................................................................................................... 20
3.4
Digital Filter............................................................................................................................................. 21
3.4.1
Frequency Response ........................................................................................................................ 22
Figure 3.5 COMB creation process ................................................................................................................. 22
Figure 3.6 Schematic diagram of CS1233/CS1239 in low power consumption mode .................................... 24
Figure 5.1 Typical characteristics of LDO (LDOS[1:0]=00, with 1mA load)............................................... 26
Figure 5.2 Typical characteristics in the full voltage and full temperature range of internal clocks ............... 26
Figure 6.1 Time sequence of the read operation 1 (the AD value is read) ...................................................... 28
Figure 6.2 Time sequence of the read operation 2 (registers except the AD value) ........................................ 28
Figure 6.3 Time sequence of the write operation ............................................................................................ 29
Figure 7.1 SOP14 package size of the chip ..................................................................................................... 30
Figure 7.2 SOP16 package size of the chip .................................................................................................... 31
Figure 7.3 QFN16 package size of the chip..................................................................................................... 32
4 / 32
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NO:CS-QR-YF-054A02
This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format
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Table
Table 1.1 Limiting values of CS1233/CS1239 .................................................................................................. 7
Table 1.2 Electrical characteristics of CS1233/CS1239 .................................................................................... 8
Table 1.3 Pins of CS1233 with SOP-14 package ............................................................................................ 11
Table 1.4 Pins of CS1239 with SOP-16 package ............................................................................................ 11
Table 1.5 Pins of CS1239 with QFN-16 package ............................................................................................ 12
Table 2.1 List of functional registers ............................................................................................................... 14
Table 2.2 Description of the SYS register ....................................................................................................... 14
Table 2.3 Description of the ADC0 register .................................................................................................... 15
Table 2.4 Description of the ADC1 register .................................................................................................... 15
Table 2.5 Description of the ADC2 register .................................................................................................... 16
Table 2.6 Description of the ADC3 register .................................................................................................... 16
Table 2.7 Description of the ADC4 register .................................................................................................... 17
Table 2.8 Description of the ADC5 register .................................................................................................... 17
Table 2.9 Description of the ADO register ...................................................................................................... 18
Table 2.10 Description of the ADO register .................................................................................................... 18
Table 3.1 Relationship between gain and input signal for the PGA and ADGN ............................................. 21
Table 4.1 Valid bits under different gain and DR for ADC signal chain (ENOB)1) ....................................... 25
Table 6.1 Serial communication command list................................................................................................ 27
Table 6.2 Time sequence of the 3-cable serial communication interface (VDD=3 V, GND=0 V, Fosc = 5.898
MHz, normal temperature) ...................................................................................................................... 29
5 / 32
without prior permission of CHIPSEA
NO:CS-QR-YF-054A02
This document is exclusive property of CHIPSEA and shall not be reproduced or copied or transformed to any other format