1 Features

(V_S = ±5 V, T_A = 25°C, R_L = 2 kΩ, A_V = +1. Typical Values Unless Specified).

• –3 dB BW (A_V = +1) 130 MHz
• Supply Voltage Range 2.7 V to 12.8 V
• Slew Rate, (A_V = –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, R_L = 2 kΩ, V_O = 2 V_PP, A_V = +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 low-voltage 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 peak-to-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.

1. For all available packages, see the orderable addendum at the end of the datasheet.

Closed Loop Gain vs Frequency
for Various Supplies

4 Revision History