ADA4939-1YCPZ-R7

ADA4939-1 is a single channel, low noise, ultralow distortion, high speed differential amplifier. It is an ideal choice for driving high performance ADCs with resolutions upto 16 bits from dc to 100MHz. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the device output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even order harmonic distortion products. With the device, differential gain configurations are easily realized with a simple external feedback network of four resistors that determine the closed-loop gain of the amplifier. It is used in applications such as ADC drivers, single-ended-to-differential converters, IF and baseband gain blocks, differential buffers, line drivers.

• Single-supply operation range from 3.3V to 5V
• Adjustable output common-mode voltage
• Differential-to-differential or single-ended-to-differential operation
• Externally adjustable gain, stable for differential gains ≥2
• Offset voltage is ±0.5mV typical at (VOS, dm = VOUT, dm/2, VDIN+ = VDIN- = 2.5V)
• Overdrive recovery time is <lt/>1ns typical at (VIN = 0V to 1.5V step, G = 3.16)
• Slew rate is 6800V/µs typical at (VOUT, dm = 2V p-p, 25% to 75%)
• 1400MHz typical -3dB small signal bandwidth at (VOUT, dm = 0.1V p-p)
• Voltage noise (RTI) is 2.3nV/√Hz typical at (f = 100KHz, TA = 25°C)
• Operating temperature is -40°C to +105°C, package style is 16-lead LFCSP

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