Features
| • | 200mA output current |
| • | .04%, .03° differential gain, phase |
| • | 5.2mA supply current for 2 amplifiers |
| • | 130MHz bandwidth (AV = +2) |
| • | -88/-98dBc HD2/HD3 (1MHz) |
| • | 16ns settling to 0.05% |
| • | 600V/µs slew rate |
| • | Nominal supply range ±2.5V to ±6V |
| • | Improved replacement for CLC5632 |
Description The LMH6718 is a dual, low cost high speed (130MHz) buffer which features user selectable gains of +2, +1, and -1V/V. The LMH6718 also has a new output stage that delivers high output drive current (200mA), but consumes minimal quiescent supply current (2.6mA/Amp) from a ±5V supply. Its current feedback architecture, fabricated in an advanced complementary bipolar process, maintains consistent performance over a wide range of signal levels, and has a linear phase response up to one half of the -3dB frequency.
The LMH6718 offers 0.1dB gain flatness to 30MHz and differential gain and phase errors of .04% and .03°. These features are ideal for professional and consumer video applications.
The LMH6718 offers superior dynamic performance with a 130MHz small-signal bandwidth, 600V/µs slew rate and 4.2ns rise/fall times (2VSTEP). The combination of low quiescent current, high output current drive, and high speed performance makes the LMH6718 well suited for many battery powered personal communication/computing systems. The ability to drive low impedance, high capacitive loads, makes the LMH6718 ideal for single ended cable applications. It also drives low impedance loads with minimum distortion. The LMH6718 will drive a 100 load with only -84/-84dBc second/third harmonic distortion (AV = +2, VOUT = 2VPP, f = 1MHz). It is also optimized for driving high currents into single-ended transformers and coils. When driving the input of high resolution A/D converters, the LMH6718 provides excellent -88/-98dBc second/third harmonic distortion (AV = +2, VOUT = 2VPP, f = 1MHz, RL = 1k) and fast settling time.
The LMH6718 is fabricated using National's VIP10™ complimentary bipolar process.
Applications
| • | Video line driver |
| • | Coaxial cable driver |
| • | Twisted pair driver |
| • | Transformer/coil driver |
| • | High capacitive load driver |
| • | Portable/battery powered applications |
| • | A/D driver |
| • | I/Q Channel Amplifier |
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