The AD9870 is a low-power, high-performance, programmable single-chip RF receiver that converts 10 MHz to 300 MHz of RF input signal to baseband (I/Q) digital output. The AD9870 features 12 dB SSB NF, > –1 dBm IIP3 and 25 dB continuous AGC range, and supports LO and sampling clock synthesis.
The AD9870 is a general-purpose intermediate frequency (IF) subsystem designed to digitize low-level IF input signals ranging from 10 MHz to 300 MHz. The device features a signal chain comprising a low-noise amplifier, mixer, variable gain amplifier with an integral antialias filter, and a bandpass sigma-delta analog-to-digital converter.
Key functional blocks include an automatic gain control (AGC) circuit providing up to 25 dB of continuous gain adjustment, programmable decimation filters, and auxiliary synthesizers for the local oscillator (LO) and sampling clock. The device supports various output formats and is available in a 48-lead LQFP package.
| Input Frequency Range | 10 MHz – 300 MHz |
|---|---|
| Output Signal Bandwidth | 10 kHz – 150 kHz |
| Interface Supply Voltage | 1.8 V to 3.6 V |
| Package Type | 48-Lead LQFP |
The device accepts low-level IF input signals from 10 MHz to 300 MHz.
The AD9870 provides an output signal bandwidth of up to 150 kHz.