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MFG:ADI D/C:09
Part Number: ADF7901
MFG: ADI
D/C: 09
Description: The ADF7901 is a low power OOK/FSK UHF transmitter designed for use in RF Remote Control Devices. The device
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ADF7901
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DataSheet
General Description
ADF7901 General Description
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 8 different channels, selectable by 3 external control lines. OOK modulation is performed by modulating the PA control line. The on-chip VCO operates at 2 × 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 50 dB 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 1.5 dB 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 0.1 µA.
ADF7901 Maximum Ratings
VDD to GND2 −0.3 V to +4.0 V
RFVDD to GND −0.3 V to +4.0 V
Digital I/O Voltage to GND −0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (B Version) 0°C to +50°C
Storage Temperature Range −65°C to +125°C
Maximum Junction Temperature 125°C
TSSOP JA Thermal Impedance 150.4°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 235°C
Infrared (15 sec) 240°C
RFVDD to GND −0.3 V to +4.0 V
Digital I/O Voltage to GND −0.3 V to VDD + 0.3 V
Operating Temperature Range
Industrial (B Version) 0°C to +50°C
Storage Temperature Range −65°C to +125°C
Maximum Junction Temperature 125°C
TSSOP JA Thermal Impedance 150.4°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) 235°C
Infrared (15 sec) 240°C
ADF7901 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
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
ADF7901 Connection Diagram
ADF7901
PDF/DataSheet Download
- Datasheet: ADF7901
- File Size: 291852 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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