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ADL5571 Datasheet(PDF) 6 Page - Analog Devices

Part No. ADL5571
Description  2.5 GHz to 2.7 GHz WiMAX Power Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
Logo AD - Analog Devices

ADL5571 Datasheet(HTML) 6 Page - Analog Devices

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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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