The ADF7901 is a low power OOK/FSK UHF transmitter designed for use in RF remote control devices. The device is capable of Frequency Shift Keying (FSK) modulation on eight different channels, selectable by three external control lines. OOK modulation is performed by modulating the PA control line.
The on-chip VCO operates at 2x the output frequency. The divide by 2 at the output of the VCO reduces the amount of PA feedthrough. As a result of this, OOK modulation depths of greater than 50dB are easily achievable.
The FSK_ADJ and ASK_ADJ resistors can be adjusted in the system to optimize output power for each modulation scheme. An additional 1.5dB of output power is provided for the lower bank of channels to adjust for antenna performance.
The CE line allows the transmitter to be powered down completely. In this mode the leakage current is typically 0.1µA.
Features and Benefits
| RF & MicrowaveSoftware & Systems Requirements |
| Document | note |
| ADF7901: High Performance ISM Band 00K/FSK Transmitter IC Data Sheet (Rev. A) | PDF 164 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADF7901BRUZ Production | 24 ld TSSOP | OTH 62 | 0 to 50C | 1.66 | 0.99 | Y |
| ADF7901BRUZ-RL Production | 24 ld TSSOP | REEL 2500 | 0 to 50C | 0 | 0.99 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-ADF7901EBZ | Evaluation Board for ADF7901 | 70.84 | Y |
| EVAL-ADF790XEBZ | Evaluation kit comprising ADF7901 transmitter and ADF7902 receiver boards (369.5 MHz - 395.9 MHz) | 151.8 | Y |
