AD8335ACPZ

AD8335ACPZ is a quad variable gain amplifier (VGA) with a low noise preamplifier intended for cost and power-sensitive applications. Each channel features a gain range of 48dB, fully differential signal paths, active input preamplifier matching, and user-selectable maximum gains of 46dB and 38dB. Individual gain controls are provided for each channel. The preamplifier (PrA) has a single-ended to a differential gain of ×8 (18.06dB) and accepts input signals ≤625mV p-p. PrA noise is 1.2nV/√Hz and the combined input referred voltage noise of the PrA and VGA is 1.3nV/√Hz at maximum gain. It is used in applications such as medical imaging (ultrasound, gamma cameras), sonar, test and measurement, and precise, stable wideband gain control.

• Gain is 18dB typical at (VS = 5V, TA = 25°C, RL = 500 ohm)
• 110MHz typical -3dB bandwidth at (RFB = 249 ohm, VS = 5V, TA = 25°C, RL = 500 ohm)
• Input voltage noise is 1.15nV/√Hz typical at (VS = 5V, TA = 25°C, RL = 500 ohm, f = 5MHz)
• Input current noise is 2.4pA/√Hz typical at (VS = 5V, TA = 25°C, RL = 500 ohm, f = 5MHz)
• Supply voltage range from 4.5V to 5.5V, quiescent current is 19mA typical at (TA = 25°C)
• Slew rate is 250V/μs typical at (low gain, VGN = 3V, VOUT = 2V p-p, VS = 5V, TA = 25°C)
• Channel-to-channel crosstalk is -80dBc typical at (VOUT = 1V p-p, f = 1 to 10MHz)
• Response time is 350ns typical at (48dB gain change, VS = 5V, TA = 25°C, RL = 500 ohm, f = 5MHz)
• Powe supply rejection ratio is -60dB typical at (VGN = 0V, all bypass capacitors removed, 1MHz)
• Operating temperature range from -40°C to +85°C, 64-lead LFCSP-VQ package

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