1. description the V2159 is a state-of-the-art voltage-controlled amplifier (vca) offering high-performance current?n/current-out technology including two opposing-polarity, voltage-sensitive control ports. the V2159 vca combines many advantages such as ultra-low noise, ultra-low distortion, low offset and high gain-bandwidth. it requires few external support circuitry and is housed in a space-efficient 8-pin single?n?ine (sip) package. 2. features ?wide dynamic range: >115 db ?wide gain range: >130 db ?logarithmic gain control with dual gain control (pos/neg) ?low distortion: (0.008 % @ 0 db gain, 0.035 %@ 15 db gain) ?wide gain-bandwidth: 6 mhz ?low harmonic distortion: 0.01 % (typ) ?package outline: sip-8 (V2159l) ?rohs compliant (pb-free) 1 V2159 ultra-low noise voltage controlled amplifier information furnished by coolaudio is believed to be accurate and reliable. however, no responsibility is assumed by coolaudio for its use, nor for any infringements of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of coolaudio. rev. 1.0 sip-8 free datasheet http://
3. applications ?faders ?expanders ?compressors ?equalizers ?oscillators ?filters ?automation systems 4. pin configuration n i e + c e - c e ) m y s ( + c - v d n g + v t u o 2 V2159 free datasheet http://
5. function description the V2159 vca is designed for high performance in audio applications which requires exponential gain control, low distortion, wide dynamic range and low dc ?ontrol feedthrough modulation. gain is controlled by converting an input current signal to a bipolar logged voltage, adding a dc control voltage and reconverting the summed voltage back to a current through a bipolar antilog circuit. the simplified internal circuit diagram of the ic is shown in figure 1. the ac input signal current flows in the input pin 1, which is maintained at a virtual ground by an internal opamp. figure 1. simplified internal circuit diagram 3 V2159 free datasheet http://
figure 3. typical thd versus symmetry voltage figure 2. gain versus control voltage at 25 c 4 V2159 free datasheet http://
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figure 10. using both control ports (differential drive) 6 V2159 free datasheet http://
6. stick packaging 7. soldering max. temperature (surface) : below 260 ? max. temperature duration : 10s above 220 ? duration : 30s between 150 ? and 180 ? : 60-120s duration soldering times : 2 times 100 c 160 c ~10s 260 c max . 210 c ~30s time(s) 60~120s 7 V2159 free datasheet http://
max. temperature (surface) : below 260 ? max. temperature duration : <10s pre-heat temperature : 120 ? soldering times : 1 time name of the part material weight (mg/unit) material name material analysis (element) material analysis (weight%) probihited content in total (ppm) leadframe 122 cu-alloy cu fe zn pb >97% 2.1-2.6% 0.05-0.2% <0.03% <47 plastic 633 epoxy resin sio 2 epoxy sb 2 o 3 70-90% 8-12% 1-3% chip 7 doped silicon si al 99.6% 0.4% die attach material 0.5 glue ag epoxy resin 82% 18% wires 0.5 gold au 99.99% leads finishing 12.5 sn solder ball sn pb cd >99.9% <0.02% <0.0005% <3 <0.1 1 sip-8 unit: mm 1 8 V2159 free datasheet http://
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