Electronic Components Datasheet Search |
|
TLC5540CPW Datasheet(PDF) 11 Page - Texas Instruments |
|
|
TLC5540CPW Datasheet(HTML) 11 Page - Texas Instruments |
11 / 24 page TLC5540 SLAS105D − JANUARY 1995 − REVISED APRIL 2004 www.ti.com 11 PRINCIPLES OF OPERATION functional description The TLC5540 uses a modified semiflash architecture as shown in the functional block diagram. The four most significant bits (MSBs) of every output conversion result are produced by the upper comparator block CB1. The four least significant bits (LSBs) of each alternate output conversion result are produced by the lower comparator blocks CB-A and CB-B in turn (see Figure 12). The reference voltage that is applied to the lower comparator resistor string is one sixteenth of the amplitude of the refence applied to the upper comparator resistor string. The sampling comparators of the lower comparator block require more time to sample the lower voltages of the reference and residual input voltage. By applying the residual input voltage to alternate lower comparator blocks, each comparator block has twice as much time to sample and convert as would be the case if only one lower comparator block were used. VI(1) VI(2) VI(3) VI(4) CLK1 CLK2 CLK3 CLK4 S(1) C(1) S(2) C(2) S(3) C(3) S(4) C(4) S(1) H(1) C(1) S(3) H(3) C(3) H(0) C(0) S(2) H(2) C(2) S(4) H(4) LD(−2) OUT(−2) OUT(−1) OUT(0) OUT(1) ANALOG IN (Sampling Points) CLK (Clock) Upper Comparators Block (CB1) Upper Data Lower Reference Voltage Lower Comparators Block (CB-A) Lower Data (A) Lower Comparators Block (CB-B) Lower Data (B) D1 −D8 (Data Output) UD(0) RV(0) UD(1) RV(1) UD(2) RV(2) UD(3) RV(3) LD(−1) LD(0) LD(1) LD(2) tpd Figure 12. Internal Functional Timing Diagram This conversion scheme, which reduces the required sampling comparators by 30 percent compared to standard semiflash architectures, achieves significantly higher sample rates than the conventional semiflash conversion method. |
Similar Part No. - TLC5540CPW |
|
Similar Description - TLC5540CPW |
|
|
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 |