LMH6618 Datasheet, PDF (1/26 Pages) National Semiconductor (TI) – 130 MHz, 1.25 mA Rail-to-Rail Input and Output Operational Amplifier with Shutdown

August 2007
LMH6618
130 MHz, 1.25 mA Rail-to-Rail Input and Output Operational
Amplifier with Shutdown
General Description
The LMH6618 is a 130 MHz rail-to-rail input and output am-
plifier designed for ease of use in a wide range of applications
requiring high speed, low supply current, low noise, and the
ability to drive complex ADC and video loads. The operating
voltage range extends from 2.7V to 11V and the supply cur-
rent is typically 1.25 mA at 5V.
The amplifier’s voltage feedback design topology provides
balanced inputs and high open loop gain for ease of use and
accuracy in applications such as active filter design. Offset
voltage is typically 0.1 mV and settling time to 0.01% is 120
ns which combined with an 80 dBc SFDR at 1 MHz makes
the part suitable for use as an input buffer for popular 10-bit
and 12-bit mega-sample ADCs.
The input common mode range extends 200 mV beyond the
supply rails. The output swings to within 270 mV of the supply
rails for a 150Ω load and 83 mV of the supply rail for a 1 kΩ
load providing true single supply operation and maximum sig-
nal dynamic range on low power rails. The amplifier output
will source and sink 35 mA and drive up to 15 pF loads without
the need for external compensation.
The LMH6618 has an active low disable pin which reduces
the supply current to 72 µA and is offered in the space saving
6-Pin TSOT23 package. The LMH6618 is available with a
−40°C to +125°C extended industrial temperature grade.
Features
V_S = 5V, R_L = 1 kΩ, T_A = 25°C and A_V = +1, unless otherwise
specified.
■ ^{Operating voltage range}
2.7V to 11V
■ ^{Supply current}
1.25 mA
■ ^{Small signal bandwidth}
130 MHz
■ ^{Slew rate}
55 V/µs
■ ^{Settling time to 0.1%}
90 ns
■ ^{Settling time to 0.01%}
120 ns
■ ^{SFDR (f = 1 MHz, A}_V ^{= +1, V}_OUT ^{= 2 V}_PP⁾
80 dBc
■ ^{0.1 dB bandwidth (A}_V ^{= +2)}
■ ^{Low voltage noise}
15 MHz
10 nV/√Hz
■ ^{Industrial temperature grade}
−40°C to +125°C
■ ^{Rail-to-Rail input and output}
Applications
■ ^{ADC driver}
■ ^{DAC buffer}
■ ^{Active filters}
■ ^{High speed sensor amplifier}
■ ^{Current sense amplifier}
■ ^{Portable video}
■ ^{STB, TV video amplifier}
Typical Application
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