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LMH6644 データシート(PDF) 1 Page - National Semiconductor (TI) |
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LMH6644 データシート(HTML) 1 Page - National Semiconductor (TI) |
1 / 22 page LMH6642/6643/6644 3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers General Description The LMH664X family true single supply voltage feedback amplifiers offer high speed (130MHz), low distortion (−62dBc), and exceptionally high output current (approxi- mately 75mA) at low cost and with reduced power consump- tion when compared against existing devices with similar performance. Input common mode voltage range extends to 0.5V below V − and 1V from V +. Output voltage range extends to within 40mV of either supply rail, allowing wide dynamic range especially desirable in low voltage applications. The output stage is capable of approximately 75mA in order to drive heavy loads. Fast output Slew Rate (130V/µs) ensures large peak-to-peak output swings can be maintained even at higher speeds, resulting in exceptional full power bandwidth of 40MHz with a 3V supply. These characteristics, along with low cost, are ideal features for a multitude of industrial and commercial applications. Careful attention has been paid to ensure device stability under all operating voltages and modes. The result is a very well behaved frequency response characteristic (0.1dB gain flatness up the 12MHz under 150 Ω load and A V = +2) with minimal peaking (typically 2dB maximum) for any gain set- ting and under both heavy and light loads. This along with fast settling time (68ns) and low distortion allows the device to operate well in ADC buffer, and high frequency filter applications as well as other applications. This device family offers professional quality video perfor- mance with low DG (0.01%) and DP (0.01˚) characteristics. Differential Gain and Differential Phase characteristics are also well maintained under heavy loads (150 Ω) and through- out the output voltage range. The LMH664X family is offered in single (LMH6642), dual (LMH6643), and quad (LMH6644) options. See ordering information for packages offered. Features (V S = ±5V, TA = 25˚C, RL =2k Ω,A V = +1. Typical values unless specified). n −3dB BW (A V = +1) 130MHz n Supply voltage range 3V to 12.8V n Slew rate (Note 8), (A V = −1) 130V/µs n Supply current (no load) 2.7mA/amp n Output short circuit current +115mA/−145mA n Linear output current ±75mA n Input common mode volt. 0.5V beyond V −, 1V from V+ n Output voltage swing 40mV from rails n Input voltage noise (100kHz) 17nV/ n Input current noise (100kHz) 0.9pA/ n THD (5MHz, R L =2k Ω,V O =2VPP,AV = +2) −62dBc n Settling time 68ns n Fully characterized for 3V, 5V, and ±5V n Overdrive recovery 100ns n Output short circuit protected (Note 11) n No output phase reversal with CMVR exceeded Applications n Active filters n CD/DVD ROM n ADC buffer amp n Portable video n Current sense buffer Closed Loop Gain vs. Frequency for Various Gain Large Signal Frequency Response 20018535 20018547 May 2003 © 2003 National Semiconductor Corporation DS200185 www.national.com |
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同様の説明 - LMH6644 |
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