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ADL5570 Datasheet(PDF) 5 Page - Analog Devices

Part No. ADL5570
Description  2.3 GHz to 2.4 GHz WiMAX Power Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADL5570 Datasheet(HTML) 5 Page - Analog Devices

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Preliminary Technical Data
ADL5570
Rev. Pr
G | Page 5 of 10
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
PIN 1
INDICATOR
5
VCC1
6
RFIN
7
GND
8
VREG
15 RFOUT
16 NC
14 RFOUT
13 NC
ADL5570
TOP VIEW
(Not to Scale)
Figure 2. ADL5570 Pin Configuration
Table 3. Pin Function Descriptions
Pin No.
Mnemonic
Description
5
VCC1
Connect to Power Supply.
6
RFIN
Matched RF Input.
8
VREG
When VREG is low, the device goes into sleep mode, reducing supply current to 1 uA. When VREG is
high (2.85 V), the device operates in its normal transmit mode. When high, VREG draws a bias current of
approximately 10 mA.
9
CFLT
A Ground Referenced Capacitor. It should be connected to this node to reduce bias line noise (see
figure 8).
10
MODE
Switches Between High Power and Low Power Modes. When MODE is low (0 V), the device operates in
high power mode. When MODE is high (2.5 V), the device operates in low power mode.
14, 15
RFOUT
Unmatched RF Output. These parallel outputs can be matched to 50 Ω using strip-line and shunt
capacitance. The power supply voltage should be connected to these pins through a choke inductor.
2
VCC2
This power supply pin should be connected to the supply via a choke circuit (see Figure 8).
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 supply current to 10 mA.
1, 11 to 13, 16
N/C
No Connect. Do not connect these pins.
7
GND
Connected to Ground.
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 4. Operating Modes1
Mnemonic
Normal Operation
Low Power Mode, POUT ≤ 10dBm
Standby Mode
Sleep Mode
VREG
High
High
High
Low
MODE
Low
High
X
X
STBY
Low
Low
High
X
1 X = don’t care.


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