TK15210 Datasheet, PDF (3/12 Pages) TOKO, Inc – Audio Analog Switch

TK15210
TEST CIRCUITS AND METHODS
SW6
SW9
SW8
SW7
1 kHz
1 Vrms
or
~
2 Vrms
10 kHz
1 Vrms _~
5 kΩ
SW5
10 µF
SW3
10 µF
SW4
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) Measure the inflow current to Pin 6 from V_CC. This
current is the supply current.
VCC
A
+
~
OSC
VCC
+
V
Figure 2
KEY INPUT CURRENT (FIGURE 3)
Figure 1
CONTROL LOW/HIGH LEVEL (FIGURE 2)
This level is a measurement of the threshold level.
1) Input V_CC to Pin 6. (This condition is the same with
all remaining measurements, omitted from their
descriptions for simplicity.)
2) Input to Pin 1 with sine wave (1 kHz, 1 Vrms).
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.
This current is the outflow current from the control terminal.
1) Measure the current to GND from Pin 4. This current is
the outflow current.
VCC
+
A
Figure 3
January 2000 TOKO, Inc.
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