Zakładka z wyszukiwarką danych komponentów |
|
LM1971 Arkusz danych(PDF) 11 Page - Texas Instruments |
|
LM1971 Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 20 page LM1971 www.ti.com SNAS104B – FEBRUARY 1995 – REVISED APRIL 2013 Figure 20. Active Reference with Active Gain Buffering LOGARITHMIC GAIN AMPLIFIER The μPot is capable of being used in the feedback loop of an op amp to create a gain controlled amplifier as shown in Figure 21. In this configuration the attenuation levels from Table 1 become gain levels with the largest possible gain value being 62 dB. For most applications, 62 dB of gain will cause signal clipping to occur. However, this can be controlled through programming. It is important to note that when in mute mode the input is disconnected from the output, thus placing the amplifier in open-loop gain state. In this mode, the amplifier will behave as a comparator. Care should be taken with the programming and design of this type of circuit. To provide the best overall performance, a high input impedance, low input bias current op amp should be used. Figure 21. Logarithmic Gain Amplifier Circuit MUTE FUNCTION A major feature of the LM1971 is its ability to mute the input signal to an attenuation level of 102 dB. This is accomplished internally by physically disconnecting the output from the input while also grounding the output pin through approximately 2 k Ω. The mute function is obtained during power-up of the device or by sending any binary data of 0011 1111 and above serially to the device. The device may be placed into mute at any time during operation, allowing the designer to make the mute command accessible to the end-user. Copyright © 1995–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM1971 |
Podobny numer części - LM1971_14 |
|
Podobny opis - LM1971_14 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |