January 2000 TOKO, Inc.

Page 3

TK15404

TEST CIRCUIT

75

Ω

33 µF

10 k

Ω

10 k

Ω

20 k

Ω

SW1

2 k

Ω

47 µF

75

Ω

SW1 is turned on

only when DG and

DP are measured.

V

CC

VCC = 5.0 V

V

CC

4.7 µF

+

75

Ω

Standby

GND

2 k

Ω

47 µF

-Input

+Input

Output

VOUT = 2.0 VP-P

TP1

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. Voltage Gain (GVA)

The voltage gain equation is as follows:

GVA = 20 log

Where V1 is the input voltage at TP1 and V2 is the measured output voltage at TP2.

7. Frequency Response (fr)

The frequency response equation is as follows:

fr = 20 log

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. Furthermore, 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 10 MHz.