ADI ADA4930-2YCPZ-R2

The ADA4930-1/ADA4930-2 are very low noise, low distortion, high speed differential amplifiers. They are an ideal choice for driving 1.8 V high performance ADCs with resolutions up to 14 bits from dc to 70 MHz. The adjustable output common mode allows the ADA4930-1/ADA4930-2 to match the input of the ADC. The internal common-mode feedback loop provides exceptional output balance, suppression of even-order harmonic distortion products, and dc level translation. With the ADA4930-1/ADA4930-2, differential gain configurations are easily realized with a simple external feedback network of four resistors determining the closed-loop gain of the amplifier. The ADA4930-1/ADA4930-2 are fabricated using proprietary silicon-germanium (SiGe), complementary bipolar process, enabling them to achieve very low levels of distortion with an input voltage noise of only 1.2 nV / √Hz. The low dc offset and excellent dynamic performance of the ADA4930-1/ADA4930-2 make them well suited for a wide variety of data acquisition and signal processing applications. The ADA4930-1 is available in a Pb-free, 3 mm×3 mm 16 - lead LFCSP, and the ADA4930-2 is available in a Pb-free, 4 mm×4 mm 24 - lead LFCSP. The pinout has been optimized to facilitate printed circuit board (PCB) layout and minimize distortion. The ADA4930-1 is specified to operate over the - 40 °C to +105 °C temperature range, and the ADA4930-2 is specified to operate over the - 40 °C to +105 °C temperature range for 3.3 V or 5 V supply voltages.

• Low input voltage noise: 1.2 nV / √Hz
• Low common- mode output: 0.9 V on single supply
• Extremely low harmonic distortion
  • • 104 dBc HD2 at 10 MHz
  • • 79 dBc HD2 at 70 MHz
  • • 73 dBc HD2 at 100 MHz
  • • 101 dBc HD3 at 10 MHz
  • • 82 dBc HD3 at 70 MHz
  • • 75 dBc HD3 at 100 MHz
• High speed
  • 3 dB bandwidth of 1.35 GHz, G = 1
  • Slew rate: 3400 V / μs, 25% to 75%
  • 0.1 dB gain flatness to 380 MHz
• Fast overdrive recovery of 1.5 ns
• 0.5 mV typical offset voltage
• Externally adjustable gain
• Differential- to- differential of single- ended- to- differential operation
• Adjustable output common- mode voltage
• Single- supply operation: 3.3 V or 5 V

• ADC drivers
• Single- ended- to- differential converters
• IF and baseband gain blocks
• Differential buffers
• Line drivers