The ADL5240 is a high performance, digitally controlled variable gain amplifier (VGA) operating from 100 MHz to 4000 MHz. The VGA integrates a high performance, 20 dB gain, internally matched amplifier (AMP) with a 6-bit digital step attenuator (DSA) that has a gain control range of 31.5 dB in 0.5 dB steps with ±0.25 dB step accuracy. The attenuation of the DSA can be controlled using a serial or parallel interface.
Both the gain block and DSA are internally matched to 50 Ω at their inputs and outputs and are separately biased. The separate bias allows all or part of the ADL5240 to be used, which facilitates easy reuse throughout a design. The pinout of the ADL5240 also enables either the gain block or DSA to be first, giving the VGA maximum flexibility in a signal chain.
The ADL5240 consumes just 93 mA and operates from a single supply ranging from 4.75 V to 5.25 V. The VGA is packaged in a thermally efficient, 5 mm × 5 mm, 32-lead LFCSP and is fully specified for operation from −40°C to +85°C. A fully populated evaluation board is available.
Features and BenefitsGain: 19.7 dB at 2.14 GHz OIP3: 41.0 dBm at 2.14 GHz P1dB: 19.5 dBm at 2.14 GHz Noise figure: 2.9 dB at 2.14 GHz | RF & MicrowaveS-Parameters
Software & Systems Requirements |
| Document | note |
| ADL5240: 100 MHz to 4000 MHz RF/IF Digitally Controlled VGA Data Sheet (Rev. A) | PDF 526 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADL5240ACPZ-R7 Production | 32 ld LFCSP (5x5mm) w/3.3mm exposed pad | REEL 1500 | -40 to 85C | 0 | 3.5 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| ADL5240-EVALZ | Evaluation Board | 100.19 | Y |
