January 2000 TOKO, Inc.
Page 3
TK15406
75
+
33 μF
47 μF
75
VCC
+
VCC = 5.0 V
4.7 μF
+
75
Standby
GND
+Input
TP1
Output
VOUT = 2.0 VP-P
TP2
TP3
MEASUREMENT METHOD
1. Supply Current (I
)
The Pin 6 current is measured with no input signal and the Standby Pin (Pin 1) open.
2. Standby Supply Current (I
)
The Pin 6 current is measured when the Standby Pin (Pin 1) is connected to ground.
3. Standby Terminal Current (I
)
The Pin 1 current is measured when Pin 1 is connected to ground.
4. Threshold Voltage (High to Low) (V
)
The Pin 1 voltage is measured at the point which changes the device from operating mode into standby mode.
5. Threshold Voltage (Low to High) (V
)
The Pin 1 voltage is measured at the point which changes the device from standby mode into operating mode.
6. Bias Voltage (V
)
The DC voltage at Pin 4 is measured with no input signal.
7. Voltage Gain (GVA)
The voltage gain equation is as follows:
GVA = 20 log
V2/V1
Where V1 is the input voltage at TP1 and V2 is the measured output voltage at TP2.
8. Frequency Response (fr)
The frequency response equation is as follows:
fr = 20 log
V2/V1
Where V1 is the measured TP3 voltage when the TP1 input frequency is set to 1 MHz and V2 is the measured TP3 voltage
when the TP1 input frequency is set to 5 MHz.
9. Total Harmonic Distortion (THD)
The TP3 signal is measured when a 1 kHz 1 V
P-P
input signal is applied to TP1.
10. Maximum Output Voltage (V
)
A 1 kHz input signal is applied to TP1 and the amplitude is slowly increased. The output voltage at TP2 is measured at
the point the THD reaches 10%.
TEST CIRCUIT