1FEATURES
23• VS = ±5V, TA = 25°C, RF = 1 KΩ, RG = 100Ω, RL = 100Ω, A V = AVMAX = 9.7V/V, Typical values
unless specified.
• −3 dB BW 150 MHz
• Gain control BW 150 MHz
• Adjustment range (<10 MHz) 80 dB
• Output offset voltage ±55 mV
• Gain matching (limit) ±0.42 dB
• Supply voltage range 7V to 12V
• Slew rate (inverting) 1500 V/μs to•
Supply Current (no load) 11 mA
• Linear Output Current ±60 mA
• Output Voltage Swing ±2.2V
• Input Noise Voltage 4.4 nV/√Hz
• Input Noise Current 2.6 pA/√Hz
• THD (20 MHz, RL = 100Ω, VO = 2 VPP) −45 dBc
• Replacement for CLC5523

APPLICATIONS
• Variable attenuator
• AGC
• Voltage controlled filter
• Video imaging processing

DESCRIPTION
The LMH™6504 is a wideband DC coupled voltage
controlled gain stage followed by a high-speed
current feedback Op Amp which can directly drive a
low impedance load. Gain adjustment range is 80 dB
for up to 10 MHz by varying the gain control input
voltage, VG.
Maximum gain is set by external components, and
the gain can be reduced all the way to cut-off. Power
consumption is 110 mW with a speed of 150 MHz
and a gain control bandwidth (BW) of 150 MHz.
Output referred DC offset voltage is less than 55 mV
over the entire gain control voltage range. Device-to•
device gain matching is within ±0.42 dB at maximum
gain. Furthermore, gain is tested over a wide range.
The output current feedback Op Amp allows high
frequency large signals (Slew Rate > 1500 V/μs) and
can also drive a heavy load current (60 mA). Near
ideal input characteristics (i.e. low input bias current,
low offset, low pin 3 resistance) enable the device to
be easily configured as an inverting amplifier as well
(see Application Information section for details).
To provide ease of use when working with a single
supply, VG range is set to be from 0V to +2V relative
to the ground pin potential (pin 4). VG input
impedance is high in order to ease drive requirement.
In single supply operation, the ground pin is tied to a
"virtual" half supply.