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LMH6639 190MHz Rail-to-Rail Output Amplifier with Disable
July 2003
LMH6639 190MHz Rail-to-Rail Output Amplifier with Disable
General Description
The LMH6639 is a voltage feedback operational amplifier with a rail-to-rail output drive capability of 110mA. Employing National’s patented VIP10 process, the LMH6639 delivers a bandwidth of 190MHz at a current consumption of only 3.6mA. An input common mode voltage range extending to 0.2V below the V− and to within 1V of V+, makes the LMH6639 a true single supply op-amp. The output voltage range extends to within 30mV of either supply rail providing the user with a dynamic range that is especially desirable in low voltage applications. The LMH6639 offers a slew rate of 172V/µs resulting in a full power bandwidth of approximately 28MHz. The TON value of 83nsec combined with a settling time of 33nsec makes this device ideally suited for multiplexing 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 for any gain setting including +1, and excellent specifications for driving video cables including harmonic distortion of −60dBc, differential gain of 0.12% and differential phase of 0.045˚
Features
(VS = 5V, Typical values unless specified) n Supply current (no load) 3.6mA n Supply current (off mode) 400µA n Output resistance (closed loop 1MHz) 0.186Ω n −3dB BW (AV = 1) 190MHz n Settling time 33nsec n Input common mode voltage −0.2V to 4V n Output voltage swing 40mV from rails n Linear output current 110mA n Total harmonic distortion −60dBc n Fully characterized for 3V, 5V and ± 5V n No output phase reversal with CMVR exceeded n Excellent overdrive recovery n Off Isolation 1MHz −70dB n Differential Gain 0.12% n Differential Phase 0.045˚
Applications
n n n n n Active filters CD/DVD ROM ADC buffer amplifier Portable video Current sense buffer
20030246
FIGURE 1. Typical Single Supply Schematic
© 2003 National Semiconductor Corporation
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LMH6639
Absolute Maximum Ratings
(Note 1)
Junction Temperature (Note 4) Soldering Information Infrared or Convection (20 sec) Wave Soldering (10 sec)
+150˚C 235˚C 260˚C
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance VIN Differential Input Current Supply Voltage (V – V ) Voltage at Input/Output pins Storage Temperature Range
+ −
2KV (Note 2) 200V (Note 9)
± 2.5V ± 10mA
13.5V V+ +0.8V, V− −0.8V −65˚C to +150˚C
Operating Ratings (Note 1)
Operating Temperature Range (Note 4) Package Thermal Resistance (θJA) (Note 4) SOT23-6 SOIC-8 265˚C/W 190˚C/W −40˚C to +85˚C
3V Electrical Characteristics
Unless otherwise specified, all limits guaranteed for at TJ = 25˚C, V+ = 3V, V− = 0V, VO = VCM = V+/2, and RL = 2kΩ to V+/2. Boldface limits apply at the temperature extremes. Symbol BW BW0.1dB FPBW GB.