ADL5570
Rev. 0 | Page 5 of 12
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
06729-002
PIN 1
INDICATOR
5VCC1
6RFIN
7GND
8
REG
15 RFOUT
16 NC
NC = NO CONNECT
14 RFOUT
13 NC
9
CFLT
10
MODE
11
NC
12
NC
3
GND
4
STBY
2
VCC
2
1
NC
ADL5570
TOP VIEW
(Not to Scale)
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
1, 11 to 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 10).
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 supply current to 1 mA.
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 10 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 10 mA.
9 CFLT A ground-referenced capacitor should be connected to this pin to reduce bias line noise (see Figure 10).
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. See
Table 4
for appropriate biasing. In cases where the MODE feature is not used, this pin should be connected
to ground through a 50 kΩ resistor.
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.
Exposed Paddle
The exposed paddle should be soldered down to a low impedance ground plane (if multiple
ground layers are present, use multiple vias (9 minimum) to stitch together the ground planes) for
optimum electrical and thermal performance.
Table 4. V
CC
= 3.5 V Operating Modes
1
Mnemonic High Power Mode, P
OUT
> 10 dBm Low Power Mode, P
OUT
≤ 10 dBm Standby Mode Sleep Mode
VREG High High High Low
MODE Low High X X
STBY Low Low High X
1
X = don’t care.
Table 5. VREG, MODE, and STBY Pins
Mnemonic Nominal High (V) High Range (V) Nominal Low (V) Low Range (V)
VREG 2.85 2.75 to 2.95 0 NA
MODE 2.5 >2.4 0 <1
STBY 2.5 >2.4 0 <1
