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TK15326 Datasheet(PDF) 5 Page - TOKO, Inc |
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TK15326 Datasheet(HTML) 5 Page - TOKO, Inc |
5 / 12 page June 1999 TOKO, Inc. Page 5 TK15326 TEST CIRCUITS AND METHODS (CONT.) MAXIMUM INPUT LEVEL (FIGURE 6) This measurement measures at output side. 1) Pin 5 is in the open condition, or low level. 2) Connect a distortion analyzer and an AC volt meter to Pin 3. 3) Input a sine wave (1 kHz) to Pin 4 and elevate the voltage gradually until the distortion gets to 0.1%. 4) When the distortion amounts to 0.1%, stop elevating and measure the AC level of Pin 3. This value is the maximum input level of 1-Ach. 5) Next, connect Pin 5 to the V CC, or high level. 6) Input the same sine wave to Pin 2. 7) Measure in the same way. This value is the maximum input level of 1-Bch. Figure 5 VCC Cont. + + VEE + VCC Cont. + + VEE + Figure 6 RESIDUAL NOISE (FIGURE 7) This value is not S/N ratio. This is a noise which occurs from the device itself. 1) Pin 5 is the open condition, or low level. 2) Connect an AC volt meter to Pin 3. 3) Connect a capacitor from Pin 4 to GND. 4) Measure AC voltage of Pin 3. This value is the noise of 1-Ach. If the influence of noise from outside exists, use optional filters. 5) Next, connect Pin 5 to the V CC, or high level. 6) Connect to GND through a capacitor from Pin 2. 7) Measure in the same way. This value is the noise level of 1-Bch. |
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