Electronic Components Datasheet Search |
|
MM74C905N Datasheet(PDF) 6 Page - Fairchild Semiconductor |
|
MM74C905N Datasheet(HTML) 6 Page - Fairchild Semiconductor |
6 / 8 page www.fairchildsemi.com 6 Switching Time Waveforms USER NOTES FOR A/D CONVERSION The register can be used with either current switches that require a low voltage level to turn the switch ON or current switches that require a high voltage level to turn the switch ON. If current switches are used which turn ON with a low logic level, the resulting digit output from the register is active low. That is, a logic “1” is represented as a low volt- age level. If current switches are used which turn ON with a high logic level, the resulting digit output is active high. A logic “1” is represented as a high voltage level. For a maximum error of ±½ LSB, the comparator must be biased. If current switches that require a high voltage level to turn ON are used, the comparator should be biased +½ LSB and if the current switches require a low logic level to turn ON, then the comparator must be biased −½ LSB. The register can be used to perform 2's complement con- version by offsetting the comparator one half full range +½ LSB and using the complement of the MSB Q11 as the sign bit. If the register is truncated and operated in the continuous conversion mode, a lock-up condition may occur on power- ON. This situation can be overcome by making the START input the “OR” function of CC and the appropriate register output. The register, by suitable selection of register ladder net- work, can be used to perform either binary or BCD conver- sion. The register outputs can drive the 10 bits or less with 50k/ 100k R/2R ladder network directly for VCC = 10V or higher. In order to drive the 12-bit 50k/100k ladder network and have the ±½ LSB resolution, the MM74C902 or MM74C904 is used as buffers, three buffers for MSB (Q11), two buffers for Q10, and one buffer for Q9. |
Similar Part No. - MM74C905N |
|
Similar Description - MM74C905N |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |