 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LT1223CS8 Datasheet(PDF) 10 Page - Linear Technology |
|
||||||||||||||||||||||||||||||
LT1223CS8 Datasheet(HTML) 10 Page - Linear Technology |
|
|
10 / 16 page  LT1223 10 1223fb have about 2.5mV thermal tail on a 10V step. Unfortu- nately, reducing the input signal and increasing the gain always results in a thermal tail of about the same amount for a given output step. For this reason we show separate graphs of 10mV and 1mV non-inverting amplifier settling times. Just as the bandwidth of the LT1223 is fairly constant for various closed-loop gains, the settling time remains constant as well. Adjustable Gain Amplifier To make a variable gain amplifier with the LT1223, vary the value of RG. The implementation of RG can be a pot, a light controlled resistor, a FET, or any other low capacitance variable resistor. The value of RF should not be varied to change the gain. If RF is changed, then the bandwidth will be reduced at maximum gain and the circuit will oscillate when RF is very small. Adjustable Bandwidth Amplifier Because the resistance at the inverting input determines the bandwidth of the LT1223, an adjustable bandwidth circuit can be made easily. The gain is set as before with RF and RG; the bandwidth is maximum when the variable resistor is at a minimum. Accurate Bandwidth Limiting the LT1223 It is very common to limit the bandwidth of an op amp by putting a small capacitor in parallel with RF. DO NOT PUT A SMALL CAPACITOR FROM THE INVERTING INPUT OF A CURRENT FEEDBACK AMPLIFIER TO ANYWHERE ELSE, ESPECIALLY NOT TO THE OUTPUT. The capacitor on the inverting input will cause peaking or oscillations. If you need to limit the bandwidth of a current feedback amplifier, use a resistor and capacitor at the noninverting input (R1 and C1). This technique will also cancel (to a degree) the peaking caused by stray capacitance at the inverting input. Unfortunately, this will not limit the output noise the way it does for the op amp. Current Feedback Amplifier Integrator Since we remember that the inverting input wants to see a resistor, we can add one to the standard integrator circuit. This generates a new summing node where we can apply capacitive feedback. The LT1223 integrator has excellent large signal capability and accurate phase shift at high frequencies. APPLICATIO S I FOR ATIO LT1223 • TA03 + – IN V OUT V LT1223 RF RG LT1223 • TA04 + – IN V OUT V LT1223 RF 5k RG LT1223 • TA05 + – IN V OUT V LT1223 RF RG R1 R1 = 300 C1 Ω C1 = 100pF BW = 5MHz LT1223 • TA06 + – IN V OUT V LT1223 RF 1k C1 OUT V IN V 1 sC1R1 = R1 |
Similar Part No. - LT1223CS8 |
|
Similar Description - LT1223CS8 |
|
|
|
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
