Ultra-Low-Distortion, Single-Supply, 300MHz Op Amps with Enable

The MAX4265–MAX4270 ultra-low distortion, voltage-feed-back op amps are capable of driving a 100Ω load while maintaining ultra-low distortion over a wide bandwidth. They offer superior spurious-free dynamic range (SFDR) performance: -90dBc at 5MHz and -59dBc at 100MHz (MAX4269). Additionally, input voltage noise density is 8nV/ while operating from a single +4.5V to +8.0V supply or from dual ±2.25V to ±4.0V supplies. These features make the MAX4265–MAX4270 ideal for use in high-performance communications and signal-processing applications that require low distortion and wide bandwidth.

The MAX4265 single and MAX4268 dual amplifiers are unity-gain stable. The MAX4266 single and MAX4269 dual amplifiers are compensated for a minimum stable gain of +2V/V, while the MAX4267 single and MAX4270 dual amplifiers are compensated for a minimum stable gain of +5V/V.

For additional power savings, these amplifiers feature a low-power disable mode that reduces supply current and places the outputs in a high-impedance state. The MAX4265/MAX4266/MAX4267 are available in a space-saving 8-pin µMAX® package, and the MAX4268/MAX4269/MAX4270 are available in a 16-pin QSOP package.

Applications

* Base-Station Amplifiers * High-Frequency ADC Drivers * High-Frequency Signal Processing * High-Speed DAC Buffers * IF Amplifiers * RF Telecom Applications

* Operates from +4.5V to +8.0V

* Superior SFDR with 100Ω Load

* -90dBc (fC = 5MHz)

* -59dBc (fC = 100MHz)

* 35dBm IP3 (fC = 20MHz)

* 8nV/ Voltage Noise Density

* 100MHz 0.1dB Gain Flatness (MAX4268)

* 900V/µs Slew Rate

* ±45mA Output Driving Capability

* Disable Mode Places Outputs in High-Impedance State