 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CDB5471 Datasheet(PDF) 5 Page - Cirrus Logic |
|
||||||||||||||||||||||||||||||
CDB5471 Datasheet(HTML) 5 Page - Cirrus Logic |
|
|
5 / 26 page  CDB5471 DS480DB1 5 2. HARDWARE 2.1 Evaluation Board Description The CDB5471 board contains circuitry that will: • Accept appropriate DC voltage levels from the user’s +3V and/or +5V power supplies, and direct this power to the VA+, VD+, VA- and DGND pins of the CS5471. • Direct the six analog input signals to the six input pairs of the CS5471. • Supply necessary voltage reference input for the CS5471’s VREFIN pin. • Supply appropriate crystal/oscillator stimulus to the CS5471’s XIN pin. • Direct the output driver signal from the CS5471’s charge-pump driver pin (CPD) which is used produce the negative power supply source for the CS5471’s VA- pin. • Provide a reset switch that allows the user to set the CS5471’s RESET pin from logic “1” to logic “0”. • Provide two DIP switches which allow the user to set the logic levels on the CS5471’s GAIN and OWRS input pins. • Detect and receive the data frame signal and dig- ital serial output data signals from the CS5471’s FSO and SDO pins, and send this output data through the included parallel cable, and up to user’s PC. Several areas of blank proto-board space are pro- vided so that, if desired, the user can interface their own electronic sensor equipment onto the board. The output from these sensors can be wired to the two nearby analog input terminal block connectors, which is then fed to the two analog input channels of the CS5471. Examples of such sensors would include voltage and current transformers, shunt re- sistors, and resistor divider networks. The next section of this document describes the various sections of the board. After this, operation of the PC software is described in detail. 2.2 Power Supply Connections The CDB5471 can be used in several different power supply configurations. Table 1 shows the various possible power connections with the re- quired jumper settings. There are various +3 V and +5 V options. The user must supply the +3V, +5V, GND, and sometimes -2V voltage levels needed to power the evaluation board. 2.2.1 Analog Power Supply Referring to Figure 1, the A+ post supplies power to the positive analog power input pin (VA+) of the CS5471. This post also supplies power to the LT1004 voltage reference (D3) and the optional +3V regulator (U5). If HDR9 is set to the “A-” set- ting, the A- post can supply the required negative voltage to the VA- pin of the CS5471. Note that the evaluation board contains the foot- prints and connectivity which allows the user to in- stall a LM317 voltage regulator (U5), which can be used to create +3 V from a +5 V supply. This op- tion is useful if the user wants to interface the eval- uation board to another board that can only operate from a +5V supply. With HDR17 set to “+5V_IN”, one single +5 V supply can be used to provide both a +5V to various microcontrollers and/or other pe- ripheral devices, as well as +3 V for the CS5471. The included schematic diagram shows the circuit- ry for the +5V regulator circuitry inside a box with dashed lines. These components are not populated when the board is shipped from the factory, but the user can install these components if desired. 2.2.2 Digital Power Supply The A+ post can be used to supply both the analog power (to CS5471 VA+ pin) as well as the digital power (to CS5471 VD+ pin). However if a sepa- rate supply voltage is desired for the digital power |
Similar Part No. - CDB5471 |
|
Similar Description - CDB5471 |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
