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ADL5571ACPZ-R7 Datasheet(PDF) 6 Page - Analog Devices |
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ADL5571ACPZ-R7 Datasheet(HTML) 6 Page - Analog Devices |
6 / 16 page ADL5571 Rev. 0 | Page 6 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS PIN 1 INDICATOR 5 VCC1 6 RFIN 7 GND 8 VREG 15 RFOUT 16 NC NC = NO CONNECT 14 RFOUT 13 NC ADL5571 TOP VIEW (Not to Scale) Figure 2. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1, 11, 12, 13, 16 NC No Connect. Do not connect these pins. 2 VCC2 This power supply pin should be connected to the supply via a choke circuit (see Figure 19). 3, 7 GND Connected to Ground. 4 STBY When STBY is low (0 V), the device operates in transmit mode. When the radio is receiving data, STBY can be taken high (2.5 V), reducing the supply current to 9 mA. 5 VCC1 Connect to Power Supply. 6 RFIN RF Input. 8 VREG When VREG is low, the device goes into sleep mode, reducing the supply current to less than 1 μA. When VREG is high (2.85 V), the device operates in its normal transmit mode. When high, VREG draws a bias current of approximately 9 mA. 9, 10 CFLT1, CFLT2 Ground-Referenced Capacitors. These should be connected to reduce bias line noise. 14, 15 RFOUT Unmatched RF Outputs. These parallel outputs are matched to 50 Ω using a microstrip line and shunt capacitor. The power supply voltage should be connected to these pins through a choke inductor. Exposed Paddle The exposed paddle should be soldered down to a low impedance ground plane (use multiple vias, at least 9, to stitch together the ground planes) for optimum electrical and thermal performance. Table 5. Operating Modes1 Mnemonic Normal Operation Standby Mode Sleep Mode VREG High High Low STBY Low High X 1 X = don’t care. |
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