LMH6515 Datasheet, PDF (6/31 Pages) National Semiconductor (TI) – 600 MHz, Digital Controlled, Variable Gain Amplifier

LMH6515
SNOSAX4C – AUGUST 2007 – REVISED MARCH 2013
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Pin Number
Analog I/O
6
7
15
14
16
13
Power
3
5,8
Symbol
IN+
IN−
OUT−
OUT+
LOAD−
LOAD+
V_CC
GND
PIN DESCRIPTIONS
Description
Non-inverting analog input. Internally biased to 1.4V. Input voltage should not exceed V_CC or
go below GND by more than 0.5V.
Inverting analog input. Internally biased to 1.4V. Input voltage should not exceed V_CC or go
below GND by more than 0.5V. If using amplifier single ended this input should be capacitively
coupled to ground.
Open collector inverting output. This pin is an output that also requires a power source. This
pin should be connected to 5V through either an RF choke or an appropriately sized inductor
that can form part of a filter. See APPLICATION INFORMATION section for details.
Open collector non-inverting output. This pin is an output that also requires a power source.
This pin should be connected to 5V through either an RF choke or an appropriately sized
inductor that can form part of a filter. See APPLICATION INFORMATION section for details.
Internal 200Ω resistor connection to pin 15. This pin can be left floating for higher gain or
shorted to pin 13 for lower gain and lower effective output impedance. See APPLICATION
INFORMATION section for details.
Internal 200Ω resistor connection to pin 14. This pin can be left floating for higher gain or
shorted to pin 16 for lower gain and lower effective output impedance. See APPLICATION
INFORMATION section for details.
5V power supply pin. Use ceramic, low ESR bypass capacitors. This pin powers everything
except the output stage.
Ground pins. Connect to low impedance ground plane. All pin voltages are specified with
respect to the voltage on these pins. The exposed thermal pad is also a ground connection.
6
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