Electronic Components Datasheet Search |
|
SSM-2122 Datasheet(PDF) 11 Page - Analog Devices |
|
SSM-2122 Datasheet(HTML) 11 Page - Analog Devices |
11 / 12 page SSM2120/SSM2122 REV. C –11– FADER AUTOMATION The SSM2120 can be used in fader automation systems to serve two channels. The inverting control port is connected through an attenuator to the VCA control voltage source. The noninverting control port is connected to a control circuit (such as Figure 6) which senses the input signal level to the VCA. Above the threshold voltage, which can be set quite low (for example –60 dBV), the VCA operates at its programmed gain. Below this threshold the VCA will downward expand at a rate deter- mined by the +VC control port attenuator. By keeping the release time constant in the 10 ms to 25 ms range, the modulation of the VCA standing noise floor (–80 dB at unity-gain), can be kept inaudibly low. The SSM2300 8-channel multiplexed sample-and-hold IC makes an excellent controller for VCAs in automation systems. Figure 16 shows the basic connection for the SSM2122 operating as a unity-gain VCA with its noninverting control ports grounded and access to the inverting control ports. This is typical for fader automation applications. Since this device is a pinout option of the SSM2120, the VCAs will behave exactly as described earlier in the VCA section. The SSM2122 can also be used with two or more op amps to implement complex voltage-controlled filter functions. Biquad and state-variable two-pole filters offering low pass, bandpass and high pass outputs can be realized. Higher order filters can also be formed by connecting two or more such stages in series. V– 2000pF 47 Ω 36k Ω 36k Ω 10pF 1/2 TL082 V+ 10pF 0.1µF +15V 200 Ω SIGOUT 2 SIGOUT 1 –VC2 –VC1 SIGIN 1 1/2 TL082 8 1 2 3 4 7 6 5 14 13 12 11 16 15 10 9 SSM2122 200 Ω 220k Ω 200 Ω 220k Ω 200 Ω 50k Ω* 150k Ω V+ 36k Ω V– V+ 50k Ω* 2000pF 47 Ω 36k Ω SIGIN 2 0.1µF –15V *OPTIONAL CONTROL FEEDTHROUGH TRIM Figure 16. SSM2122 Basic Connection (Control Ports at 0 V) |
Similar Part No. - SSM-2122 |
|
Similar Description - SSM-2122 |
|
|
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 |