AD8338ACPZ-RL

AD8338ACPZ-RL is a low-power, 18MHz variable gain amplifier. It is a variable gain amplifier (VGA) for applications that require a fully differential signal path, low power, low noise, and a well-defined gain over frequency. Although the inputs are differential, the device can also be driven with a single-ended source if required. It includes additional circuit blocks to enable input offset correction and automatic gain control (AGC). DC offset voltages are removed by the offset correction circuit, which behaves like a high-pass filter whose corner is set with an external capacitor. The AGC function varies the gain of the device to maintain a constant rms output voltage. An externally applied voltage to Pin VAGC with respect to the voltage at Pin VREF sets the output rms amplitude. It is used in applications such as the front end for inductive telemetry systems, ultrasonic signal receivers, signal compression for driving an ADC, and AGC amplifiers.

• Fully differential signal path, offset correction (offset null) feature
• Internal 1.5V reference, automatic gain control feature, supply voltage range from 3V to 5V
• Wide gain range for high dynamic range signals, voltage controlled gain range of 0dB to 80dB
• 18MHz typical -3dB bandwidth at (VBAT = 3V, TA = 25°C, CL = 2pF on OUTP and OUTM)
• Input capacitance is 2pF typical at (VBAT = 3V, TA = 25°C, CL = 2pF on OUTP and OUTM)
• Peak slew rate is 50V/µs typical at (VGAIN = 0.6V, VBAT = 3V, TA = 25°C, CL = 2pF on OUTP and OUTM)
• Input-referred voltage noise is 4.5nV/√Hz typical at (VGAIN = 1.1V, VBAT = 3V, TA = 25°C)
• Gain accuracy is +0.5dB typical at (VBAT = 3V, TA = 25°C, CL = 2pF on OUTP and OUTM)
• Output current is 5mA typical at (VBAT = 3V, TA = 25°C, CL = 2pF on OUTP and OUTM)
• Operating temperature range from -40°C to +85°C, 16-lead LFCSP package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party