¡ Semiconductor
ML7000-01/02/03/ML7001-01/02/03
PIN FUNCTIONAL DESCRIPTION
AIN+, AIN–, GSX
Transmit analog input and transmit level adjustment.
AIN+ is a non-inverting input to the op-amp; AIN– is an inverting input to the op-amp; GSX is
connected to the output of the op-amp.
The level adjustment should be performed using any of the methods shown below. During
power-saving and power-down modes, the GSX output is at AG voltage.
C1
Analog input
R1
R2
GSX
AIN–
AIN+
SG
–
+
R1 : variable
R2 > 20 kW
C1 > 1/(2
¥
3.14
¥
30
¥
R1)
C2
Analog input
R5
R4
R3
AIN+
AIN–
GSX
SG
+
–
R3 > 20 kW
R4 > 20 kW
R5 > 50 kW
C2 > 1/ (2
¥
3.14
¥
30
¥
R5)
AG
Analog ground.
VFRO
Receive filter output.
The output signal has an amplitude of 2.4 V
PP
for ML7000-xx and 2.0 V
PP
for ML7001-xx above
and below the signal ground voltage (SG) when the digital signal of +3 dBm0 is input to PCMIN
and can drive a load of 20 kW or more.
For driving a load of less than 20 kW, connect a resistor of 20 kW or more between the pins VFRO
and PWI.
During power-saving or power-down mode, the VFRO output is at an SG level.
When adjusting the receive signal on the basis of frequency characteristics, refer to the Frequency
Characteristics Adjustment Circuit.
4/19
OKI [ OKI ELECTRONIC COMPONETS ]
