TK15211 查看數據表（PDF） - Toko America Inc
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TK15211 Datasheet PDF : 12 Pages
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TK15211
TEST CIRCUITS AND METHODS
SW9
SW6
SW8
SW7
10 µF
SW3
10 µF
SW4
50 kΩ
1 kHz
1 Vrms
or
~
2 Vrms
10 kHz
1 Vrms ~
5 kΩ
SW5
VCC/2
50 kΩ
SW2
V~
V_
THD
VCC
+
SW1
1: The above condition tests the dynamic range measurement for channel A.
2: SW5 is for residual noise measurement.
3: SW8 is for cross talk measurement.
SUPPLY CURRENT (FIGURE 1)
This current is a consumption current with a nonloading
condition.
1) Bias supply to Pin 1 and Pin 3. (This condition is the
same with the other measurements too, omits from
next).
2) Measure the inflow current to Pin 6 from VCC.
This current is the supply current.
3) Connect an oscilloscope to Pin 2.
4) Elevate the Pin 4 voltage from 0 V gradually, until the
sine wave appears at the oscilloscope. This voltage is
the threshold level when the wave appears.
VCC
+
+
50 K
VCC
A
~
OSC
V
50 K
VCC / 2
Figure 2
KEY INPUT CURRENT (FIGURE 3)
Figure 1
CONTROL LOW/HIGH LEVEL (FIGURE 2)
This current means the outflow current with the control
terminal.
1) Measure the current to GND from Pin 4. This current is
the outflow current.
This level is to measure the threshold level.
1) Input, the VCC to Pin 6. (This condition is the same with
the other measurements, omitted from the next for
simplicity.)
2) Input to Pin 1 with sine wave (1 kHz, 1 Vrms).
June 1999 TOKO, Inc.
Page 3
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