ADA4937-1

Data Sheet FEATURES Extremely low harmonic distortion (HD) −112 dBc HD2 at 10 MHz −84 dBc HD2 at 70 MHz −77 dBc HD2 at 100 MHz −102 dBc HD3 at 10 MHz −91 dBc HD3 at 70 MHz −84 dBc HD3 at 100 MHz Low input voltage noise: 2.2 nV/√Hz High speed −3 dB bandwidth of 1.9 GHz, G = 1 Slew rate: 6000 V/μs, 25% to 75% Fast overdrive recovery of 1 ns 0.5 mV typical offset voltage Externally adjustable gain Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Single-supply operation: 3.3 V to 5 V APPLICATIONS ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Line drivers GENERAL DESCRIPTION The ADA4937-1/ADA4937-2 are low noise, ultralow distortion, high speed differential amplifiers. They are an ideal choice for driving high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The adjustable level of the output common mode allows the ADA4937-1/ADA4937-2 to match the input of the ADC. The internal common-mode feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products. With the ADA4937-1/ADA4937-2, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier. The ADA4937-1/ADA4937-2 are fabricated using Analog Devices, Inc., proprietary silicon-germanium (SiGe), complementary bipolar process, enabling them ...