 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
CLC450AJ Datasheet(PDF) 8 Page - National Semiconductor (TI) |
|
|
||||||||||||||||||||||||||||||
CLC450AJ Datasheet(HTML) 8 Page - National Semiconductor (TI) |
|
|
8 / 12 page  http://www.national.com 8 AC Coupled Single Supply Operation Figures 3 and 4 show possible non-inverting and invert- ing configurations for input signals that go below 0.8V DC. The input is AC coupled to prevent the need for level shifting the input signal at the source. The resistive voltage divider biases the non-inverting input to VCC ÷2 = 2.5V (For VCC = +5V). Figure 3: AC Coupled Non-Inverting Configuration Figure 4: AC Coupled Inverting Configuration Dual Supply Operation The CLC450 operates on dual supplies as well as single supplies. The non-inverting and inverting configurations are shown in Figures 5 and 6. Figure 5: Dual Supply Non-Inverting Configuration Figure 6: Dual Supply Inverting Configuration Feedback Resistor Selection The feedback resistor, Rf, affects the loop gain and frequency response of a current feedback amplifier. Optimum performance of the CLC450, at a gain of +2V/V, is achieved with Rf equal to 1kΩ. The frequency response plots in the Typical Performance sections illustrate the recommended Rf for several gains. These recommended values of Rf provide the maximum band- width with minimal peaking. Within limits, Rf can be adjusted to optimize the frequency response. s Decrease Rf to peak frequency response and extend bandwidth s Increase Rf to roll off frequency response and compress bandwidth As a rule of thumb, if the recommended Rf is doubled, then the bandwidth will be cut in half. Unity Gain Operation The recommended Rf for unity gain (+1V/V) operation is 1.5k Ω.R g is left open. Parasitic capacitance at the inverting node may require a slight increase in Rf to maintain a flat frequency response. Bandwidth vs. Output Amplitude The bandwidth of the CLC450 is at a maximum for output voltages near 1Vpp. The bandwidth decreases for smaller and larger output amplitudes. Refer to the Frequency Response vs. Vo plots. Load Termination The CLC450 can source and sink near equal amounts of current. For optimum performance, the load should be tied to Vcm. Driving Cables and Capacitive Loads When driving cables, double termination is used to prevent reflections. For capacitive load applications, a small series resistor at the output of the CLC450 will improve stability and settling performance. The Frequency Response vs. CL and Recommended Rs vs. CL plots, in the typical performance section, give the recommended series resistance value for optimum flatness at various capacitive loads. + - Rf 0.1 µF 6.8 µF Vo Vin Rg R 4 7 6 C Cc R + VV 1 R R 2.5 o in f g =+ + low frequency cutoff 1 2R C , where: R R 2 in c in == π RRsource >> CLC450 3 2 VCC VCC 2 + - Rf 0.1 µF 6.8 µF Vo Vin R 4 7 6 Cc R + VV R R 2.5 o in f g =− + low frequency cutoff 1 2R C gc = π Rg CLC450 3 2 VCC VCC 2 + - CLC450 Rf 0.1 µF 6.8 µF Vo Vin VCC 0.1 µF 6.8 µF VEE 3 2 4 7 6 + + Rg Rt + - CLC450 Rf 0.1 µF 6.8 µF Vo Vin VCC 0.1 µF 6.8 µF VEE Rg Rb 3 2 4 7 6 + + Rt Note: Rb provides DC bias for the non-inverting input. Select Rt to yield desired Rin = Rt || Rg. |
Similar Part No. - CLC450AJ |
|
Similar Description - CLC450AJ |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
