Os motores de busca de Datasheet de Componentes eletrônicos |
|
DAC1006LCWM Folha de dados(PDF) 10 Page - National Semiconductor (TI) |
|
|
DAC1006LCWM Folha de dados(HTML) 10 Page - National Semiconductor (TI) |
10 / 22 page 52 Analog Operation in the Voltage Switching Mode Some useful application circuits result if the R-2R ladder is operated in the voltage switching mode There are two very important things to remember when using the DAC in the voltage mode The reference voltage (aV) must always be positive since there are parasitic diodes to ground on the IOUT1 pin which would turn on if the reference voltage went negative To maintain a degradation of linearity less than g 0005% keep aV s 3VDC and VCC at least 10V more positive than aV Figures 6 and 7 show these errors for the voltage switching mode This operation appears unusual since a reference voltage (aV) is applied to the IOUT1 pin and the voltage output is the VREF pin This basic idea is shown in Figure 8 This VOUT range can be scaled by use of a non-inverting gain stage as shown in Figure 9 Notice that this is unipolar operation since all voltages are positive A bipolar output voltage can be obtained by using a single op amp as shown in Figure 10 For a digital input code of all zeros the output voltage from the VREF pin is zero volts The external op amp now has a single input of a V and is operating with a gain of b1 to this input The output of the op amp therefore will be at bV for a digital input of all zeros As the digital code increases the output voltage at the VREF pin increases Notice that the gain of the op amp to voltages which are applied to the (a) input is a2 and the gain to voltages which are applied to the input resistor R is b1 The output voltage of the op amp depends on both of these inputs and is given by VOUTe(aV) (b1)aVREF(a2) FIGURE 6 FIGURE 7 DIGITAL INPUT CODE FIGURE 8 Voltage Mode Switching TLH5688 – 12 FIGURE 9 Amplifying the Voltage Mode Output (Single Supply Operation) 10 |
Nº de peça semelhante - DAC1006LCWM |
|
Descrição semelhante - DAC1006LCWM |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes 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 |