AD8330ARQZ Voltage Controlled Amplifier

RS Components Part # 412-311

Manufactured by Analog Devices - Part # AD8330ARQZ - QSOP 16 pin SMD Package

GENERAL DESCRIPTION

The AD8330 is a wideband variable gain amplifier for applications requiring a fully differential signal path, low noise, well-defined gain, and moderately low distortion, from dc to 150 MHz. The input pins can also be driven from a single-ended source. The peak differential input is ±2 V, allowing sine wave operation at 1 V rms with generous headroom. The output pins can drive single-sided loads essentially rail-to-rail. The differential output resistance is 150 Ω. The output swing is a linear function of the voltage applied to the VMAG pin that internally defaults to 0.5 V providing a peak output of ±2 V. This can be raised to 10 V p-p, limited by the supply voltage.

FEATURES

• Fully differential signal path and also used with single-sided signals
• Inputs from 0.3 mV to 1 V rms, rail-to-rail outputs
• Differential RIN = 1 kΩ; ROUT (each output) 75 Ω
• Automatic offset compensation (optional)
• Linear-in-dB and linear-in-magnitude gain modes 0 dB to 50 dB, for 0 V < VDBS < 1.5 V (30 mV/dB)
• Inverted gain mode: 50 dB to 0 dB at −30 mV/dB ×0.03 to ×10 nominal gain for 15 mV < VMAG < 5 V
• Constant bandwidth: 150 MHz at all gains
• Low noise: 5 nV/√Hz typical at maximum gain
• Low distortion: ≤−62 dBc typical
• Low power: 20 mA typical at VS of 2.7 V to 6 V