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TK15211 Datasheet(PDF) 4 Page - TOKO, Inc |
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TK15211 Datasheet(HTML) 4 Page - TOKO, Inc |
4 / 12 page Page 4 June 1999 TOKO, Inc. TK15211 TOTAL HARMONIC DISTORTION (FIGURE 4) Use the lower distortion oscillator for this measurement because distortion of the TK15211 is very low. 1) Pin 4 is the open condition, or high level. 2) Connect a distortion analyzer to Pin 2. 3) Input the sine wave (1 kHz, 1 Vrms) to Pin 1. 4) Measure the distortion of Pin 2. This value is the distortion of Ach. 5) Next connect Pin 4 to the GND, or low level. 6) Input the same sine wave to Pin 3. 7) Measure in the same way. This value is the distortion of Bch. TEST CIRCUITS AND METHODS (CONT.) Figure 3 6) Calculate Gain = 20 Log (( |V2 - V1| )/V1) V1<V2 = + Gain, V1>V2 = - Gain This value is the voltage gain of Ach. 7) Next, connect Pin 4 to the GND, or low level. 8) Input the same sine wave to Pin 3. 9) Measure and calculate in the same way. This value is the voltage gain of Bch. MAXIMUM INPUT LEVEL (FIGURE 6) This measurement measures at the output side. 1) Pin 4 is the open condition, or high level. 2) Connect a distortion analyzer and an AC volt meter to Pin 2. 3) Input a sine wave (1 kHz) to Pin 1 and elevate the voltage from 0 V gradually until the distortion gets to 0.1% at Pin 2. 4) When the distortion amounts to 0.1%, stop elevating and measure the AC level of Pin 2. This value is the maximum input level of Ach. 5) Next, connect Pin 4 to the GND, or low level. 6) Input the same sine wave to Pin 3. 7) Measure in the same way. This value is the maximum input level of Bch. VCC + A VCC + + ~ THD Figure 4 VCC + + ~ V ~ V ~ V1 V2 Figure 5 VCC + + ~ V ~ THD Figure 6 VOLTAGE GAIN (FIGURE 5) This is the output level against input level. 1) Pin 4 is in the open condition, or high level. 2) Connect AC volt meters to Pin 1 and Pin 3. (Using the same type meter is best) 3) Input sine wave (1 kHz) to Pin 1 (f = optional up to max. 20 kHz, 1 Vrms). 4) Measure the level of Pin 1 and name this V1. 5) Measure the level of Pin 2 and name this V2. |
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