1 Features

1(VS = ±5 V, TA = 25°C, RL = 2 kΩ, AV = +1.

Typical Values Unless Specified).

• –3 dB BW (AV = +1) 130 MHz

• Supply Voltage Range 2.7 V to 12.8 V

• Slew Rate, (AV = –1) 130 V/μs(1)

• Supply Current (no load) 2.7 mA/amp

• Output Short Circuit Current +115 mA to 145 mA

• Linear Output Current ±75 mA

• Input Common Mode Voltage 0.5 V Beyond V–, 1

V from V+

• Output Voltage Swing 40 mV from Rails

• Input Voltage Noise (100 kHz) 17 nV/√Hz

• Input Current Noise (100 kHz) 0.9 pA/√Hz

• THD (5 MHz, RL = 2 kΩ, VO = 2 VPP, AV = +2) –62

dBc

• Settling Time 68 ns

• Fully Characterized for 3 V, 5 V, and ±5 V

• Overdrive Recovery 100 ns

• Output Short Circuit Protected(2)

• No Output Phase Reversal with CMVR Exceeded

(1) Slew rate is the average of the rising and falling slew rates.

(2) Output short circuit duration is infinite for VS < 6 V at room

temperature and below. For VS > 6 V, allowable short circuit

duration is 1.5 ms.

2 Applications

• Active Filters

• CD/DVD ROM

• ADC Buffer Amp

• Portable Video

• Current Sense Buffer

3 Description

The LMH6644-MIL true single supply voltage

feedback amplifier offers high speed (130 MHz), low

distortion (–62 dBc), and exceptionally high-output

current (approximately 75 mA) at low cost and with

reduced power consumption when compared against

existing devices with similar performance.

Input common mode voltage range extends to 0.5 V

below V– and 1 V from V+. Output voltage range

extends to within 40 mV of either supply rail, allowing

wide dynamic range especially desirable in lowvoltage

applications. The output stage is capable of

approximately 75 mA in order to drive heavy loads.

Fast output slew rate (130 V/μs) ensures large peakto-

peak output swings can be maintained even at

higher speeds, resulting in exceptional full power

bandwidth of 40 MHz with a 3-V supply. These

characteristics, along with low cost, are ideal features

for a multitude of industrial and commercial

applications.