Electronic Components Datasheet Search |
|
LTC1391CGN Datasheet(PDF) 6 Page - Linear Technology |
|
LTC1391CGN Datasheet(HTML) 6 Page - Linear Technology |
6 / 9 page 6 LTC1391 APPLICATIONS INFORMATION Figure 6. Data Sequence for MUX Expansion B2 B1 B0 CLK CS DIN 1391 • F06 ENA A2 A1 A0 ENB 12 34 56 78 To ensure that only one channel is switched on at any one time, two sets of channel selection bits are needed for DATA as shown in Figure 6. The first data sequence is used to switch off one MUX and the second data sequence is used to select one channel from the other MUX or vice versa. In other words, if bit “ENA” is high and bit “ENB” is low, one channel of MUX A is switched on and all channels of MUX B are switched off. If bit “ENA” is low and bit “ENB” is high, all channels at MUX A are switched off and one channel of MUX B is switched on. Care should be taken to ensure that only one LTC1391 is enabled at any one time to prevent two channels from being enabled simultaneously. Multiplexer Expansion Several LTC1391s can be daisy-chained to expand the number of multiplexer inputs. No additional interface ports are required for the expansion. Figure 5 shows two LTC1391s connected at their analog outputs to form a 16-to-1multiplexerattheinputtoanLTC1400A/Dconverter. D2 D1 D3 D4 D5 D2 D1 D3 D4 D5 CLK DIN DOUT 1391 • F04 12 34 Figure 4. Digital Data Transfer Operation 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 S0 S1 S2 S3 S4 S5 S6 S7 V+ D V – DOUT DIN CS CLK GND ANALOG INPUTS LTC1391 A 1 2 3 4 8 7 6 5 VSS CONV CLK DOUT VCC AIN VREF GND LTC1400 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 S0 S1 S2 S3 S4 S5 S6 S7 V+ D V – DOUT DIN CS CLK GND LTC1391 B 5V –5V –5V 5V DATA IN CS CLK 1391 • F05 0.1 µF ANALOG INPUTS 0.1 µF 10 µF 10 µF OPTIONAL A/D INPUT FILTER + 10 µF + 0.1 µF 0.1 µF 0.1 µF DATA OUT Figure 5. Daisy-Chaining Two LTC1391s for Expansion bits clocked into the LTC1391 shift register before CS is taken low select the MUX channel that is turned on. This allows a series of devices, with the DOUT of one device connected to the DIN of the next device, to be programmed with a single data stream. |
Similar Part No. - LTC1391CGN |
|
Similar Description - LTC1391CGN |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |