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ADRF6807ACPZ-R7 Datasheet(PDF) 8 Page - Analog Devices |
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ADRF6807ACPZ-R7 Datasheet(HTML) 8 Page - Analog Devices |
8 / 36 page ADRF6807 Data Sheet Rev. B | Page 8 of 36 Pin No. Mnemonic Description 6 REFIN Reference Input. Nominal input level is 1 V p-p. Input range is 9 MHz to 160 MHz. 8 MUXOUT Multiplexer Output. This output can be programmed to provide the reference output signal or the lock detect signal. The output is selected by programming the appropriate register. 9 DECL2 Connect a 0.1 μF capacitor between this pin and ground. 10 VCC2 3.3 V Power Supply for 2.5 V LDO. 12 DATA Serial Data Input. The serial data is loaded MSB first with the three LSBs being the control bits. 13 CLK Serial Clock Input. This serial clock is used to clock in the serial data to the registers. The data is latched into the 24-bit shift register on the CLK rising edge. Maximum clock frequency is 20 MHz. 14 LE Load Enable. When the LE input pin goes high, the data stored in the shift registers is loaded into one of the six registers, the relevant latch being selected by the first three control bits of the 24-bit word. 17, 34 VCCLO 3.3 V Power Supply for LO Path Blocks. 18, 19 QBBP, QBBN Demodulator Q-Channel Differential Baseband Outputs (Differential Output Impedance of 28 Ω). 22 VCCBB 5 V Power Supply for Demodulator Blocks. 23 VOCM Baseband Common-Mode Reference Input; 1.65 V Nominal. It sets the dc common-mode level of the IBBx and QBBx outputs. 25, 26 RFIP, RFIN Differential 100 Ω, Internally Biased RF Inputs. These pins must be ac-coupled. 28 VCCRF 5 V Power Supply for Demodulator Blocks. 29 DECL3 Connect a 2.2 μF capacitor between this pin and ground. 32, 33 IBBN, IBBP Demodulator I-Channel Differential Baseband Outputs (Differential Output Impedance of 28 Ω). 36 LOSEL LO Select. Connect this pin to ground for the simplest operation and to completely control the LO path and input/output direction from the register programming of the SPI. For additional control without register reprogramming, this input pin can determine whether the LOP and LON pins operate as inputs or outputs. LOP and LON become inputs if the LOSEL pin is set low, the LDRV bit of Register 5 is set low, and the LXL bit of Register 5 is set high. The externally applied LO drive must be at M×LO frequency (where M corresponds to the main LO divider setting). LON and LOP become outputs when LOSEL is high or if the LDRV bit of Register 5 (DB3) is set high and the LXL bit of Register 5 (DB4) is set to low. The output frequency is controlled by the LO output divider bits in Register 7. This pin should not be left floating. 37, 38 LON, LOP Local Oscillator Input/Output (Differential Output Impedance of 28 Ω). When these pins are used as output pins, a differential frequency divided version of the internal VCO is available on these pins. When the internal LO generation is disabled, an external M×LO frequency signal can be applied to these pins, where M corresponds to the main divider setting. 39 VTUNE VCO Control Voltage Input. This pin is driven by the output of the loop filter. The nominal input voltage range on this pin is 1.0 V to 2.8 V. 40 DECL1 Connect a 10 μF capacitor between this pin and ground as close to the device as possible because this pin serves as the VCO supply and loop filter reference. EP Exposed Paddle. The exposed paddle should be soldered to a low impedance ground plane. |
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