Hot-selling and scarce ADF7901BRU High Performance ISM Band ASK/FSK Transmitter IC TSSOP24 spot stock

Product Descriptions

The ADF7901 is a low power OOK/FSK UHF transmitterdesigned for use in RF Remote Control Devices . The device is capable of Frequency Shift Keying (FSK) modulation on 8 different channels, selectable by 3 external control lines . OOKmodulation is performed by modulating the PA control line .

The on-chip VCO operates at 2 × the output frequency. Thedivide by 2 at the output of the VCO reduces the amount ofPAfeedthrough . As a result of this, OOK modulation depths ofgreater than 50 dB are easily achievable .

The FSK_ADJ and ASK_ADJ resistors can be adjusted in thesystem to optimize output power, for each modulation scheme .An additional 1 .5 dB of output power is provided for the lowerbank of channels to adjust for antenna performance . The CEline allows the transmitter to be powered down completely. Inthis mode, the leakage current is typically 0.1 µA .

Product Features

Single chip low power UHF transmitter

369.5 MHz to 395.9 MHz frequency operation using

Fractional-N

PLL and fully integrated VCO

3.0 V supply voltage

Data rates supported < 2.5 kbps

Low current consumption 26 mA at 12 dBm

Output at 384 MHz

Power-down mode (< 1 µA)

24-Lead TSSOP package

Product Photos

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