ADL5571-EVALZ AD [Analog Devices], ADL5571-EVALZ Datasheet - Page 6

• Manufacturer Part Number: ADL5571-EVALZ
• Description: 2.5 GHz to 2.7 GHz WiMAX Power Amplifier
• Manufacturer: AD [Analog Devices]

ADL5571
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
1, 11, 12, 13, 16
2
3, 7
4
5
6
8
9, 10
14, 15
Table 5. Operating Modes
Mnemonic
VREG
STBY
1
X = don’t care.
Mnemonic
NC
VCC2
GND
STBY
VCC1
RFIN
VREG
CFLT1, CFLT2
RFOUT
Exposed
Paddle
1
Normal Operation
High
Low
Description
No Connect. Do not connect these pins.
This power supply pin should be connected to the supply via a choke circuit (see Figure 19).
Connected to Ground.
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.
Connect to Power Supply.
RF Input.
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.
Ground-Referenced Capacitors. These should be connected to reduce bias line noise.
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.
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.
VREG
NC = NO CONNECT
VCC1
RFIN
GND
Figure 2. Pin Configuration
5
6
7
8
Rev. 0 | Page 6 of 16
(Not to Scale)
ADL5571
PIN 1
INDICATOR
TOP VIEW
Standby Mode
High
High
16 NC
15 RFOUT
14 RFOUT
13 NC
Sleep Mode
Low
X