RangeCharger
TM
PA2423L
2.4 GHz Power Amplifier IC
Final
Applications
Bluetooth
tm
wireless technology (Class 1)
USB dongles
PCMCIA, flash cards
Access points
2.4GHz cordless telephone
Product Description
A monolithic, high-efficiency, silicon-germanium power
amplifier IC, the PA2423L is designed for 2.4GHz
TM
wireless applications, including Bluetooth Class1 and
2.4GHz cordless telephone applications. It delivers
+22.5 dBm output power with 45% power-added
efficiency, making it capable of overcoming insertion
losses of up to 2.5 dB between amplifier output and
antenna input.
The PA2423L contains an analog control input for
improving PAE at reduced output power levels.
The PA2423L provides a digital control input for
controlling power up and power down modes of
operation.
An on-chip ramping circuit provides the turn-on/off
switching of amplifier output with less than 3dB
TM
overshoot, meeting the Bluetooth specification 1.1.
The PA2423L operates at 3.3V DC. At typical output
power level (+22.5 dBm), its current consumption is
125 mA.
The silicon/silicon-germanium structure of the PA2423L,
and its exposed die-pad package, soldered to the
system PCB, provide high thermal conductivity and a
subsequently low junction temperature. This device is
capable of operating at a duty cycle of 100 percent.
Features
+22.5dBm at 45% Power Added Efficiency
Low current 80mA typical @ P
OUT
= +20 dBm
Temperature stability better than 1dB over
-40C to +85°C
Power-control and power-down modes
3.3V single supply operation
Small plastic package: 6 lead LPCC
(1.6mm x 3.0mm)
Ordering Information
Type
PA2423L
PA2423L-R
PA2423L-EV
Package
6 Pin LPCC
6 Pin LPCC
Evaluation Kit
Remark
Samples
Shipped in
Tape & Reel
Functional Block Diagram
V
CTL
V
CC0
V
RAMP
Bias Generator
Control
Circuitry
IN
Stage 1
Interstage
Match
Stage 2
OUT
GND
V
CC1
GND
13-DST-01
Rev 3.2
Aug 29/02
1 of 10
RangeCharger
TM
PA2423L
2.4 GHz Power Amplifier IC
Final
Pin Out Diagram
PA2423L
Top View
OUT/V
CC2
OUT/V
CC2
6
PA2423L
Bottom View
V
CTL
V
RAMP
1
2
6
1
2
Die Pad
V
CTL
V
RAMP
5
3
4
V
CC1
V
CC0
V
CC1
V
CC0
5
3
IN
4
Pin Out Description
Pin No.
1
2
3
4
5
6
Die Pad
Name
V
CTL
V
RAMP
IN
V
CC0
V
CC1
OUT/V
CC2
GND
Description
Controls the output level of the power amplifier. An analog control signal between 0V
and V
CC
varies the PA output power between minimum and maximum values
Power Amplifier Enable pin. A digital control signal with logic high (power up) and logic
low (power down) is used to turn the device on and off.
Power amplifier RF input, external input matching network with DC blocking is required
Bias supply voltage
Stage 1 collector supply voltage, external inter-stage matching network is required
PA Output and Stage2 collector supply voltage, external output matching network with
DC blocking is required
Heatslug Die Pad is ground
13-DST-01
Rev 3.2
IN
Aug 29/02
2 of 10
RangeCharger
TM
PA2423L
2.4 GHz Power Amplifier IC
Final
Absolute Maximum Ratings
Operation in excess of any one of above Absolute Maximum Ratings may result in permanent damage. This device is
a high performance RF integrated circuit with ESD rating < 600V and is ESD sensitive. Handling and assembly of this
device should be at ESD protected workstations.
Symbol
V
CC
V
CTL
V
RAMP
IN
T
A
T
STG
T
j
Supply Voltage
Control Voltage
Ramping Voltage
RF Input Power
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temperature
-40
-40
Parameter
Min.
-0.3
-0.3
-0.3
Max.
+3.6
V
CC
V
CC
+8
+85
+150
+150
Unit
V
V
V
dBm
°C
°C
°C
DC Electrical Characteristics
Conditions: V
CC0
= V
CC1
= V
CC2
= V
RAMP
= 3.3V, V
CTL
= 3.3V, P
IN
= +2dBm, T
A
= 25°C, f = 2.45GHz, input and output
externally matched to 50Ω unless otherwise noted.
Symbol
V
CC
I
CC
Supply Voltage
Supply Current (I
CC
= I
VCC0
+ I
VCC1
+ I
VCC2
),
V
CTL
= 3.3V
Supply Current variation over temperature
from T
A
= 25°C
(-40°C < T
A
< +85°C)
PA Output Power Control Voltage Range
Current sunk by V
CTL
pin
Logic High Voltage
Logic Low Voltage
Leakage Current when V
RAMP
= 0V,
V
CTL
= high
1
3
3
1
0.5
2.0
0.8
10
1
Parameter
Note
Min.
2.7
Typ.
3.3
125
Max.
3.6
150
Unit
V
mA
∆Icc
temp
V
CTL
I
CTL
V
RAMP
I
stdby
3
0
25
V
CC
200
250
%
V
µA
V
V
µA
13-DST-01
Rev 3.2
Aug 29/02
3 of 10
RangeCharger
TM
PA2423L
2.4 GHz Power Amplifier IC
Final
AC Electrical Characteristics
Conditions: V
CC0
= V
CC1
= V
CC2
= V
RAMP
= 3.3V, V
CTL
= 3.3V, P
IN
= +2 dBm, T
A
= 25°C, f = 2.45 GHz, input and
output externally matched to 50Ω unless otherwise noted.
Symbol
fL-U
P
OUT
∆P
temp
dP
OUT
/dV
CTL
PAE
Parameter
Frequency Range
Output Power @ P
IN
=+2 dBm, V
CTL
= 3.3V
Output Power @ P
IN
=+2 dBm, V
CTL
= 0.4V
Output Power variation over temperature
(-40°C < T
A
<+85°C)
Control Voltage Sensitivity
Power Added Efficiency at +22.5 dBm
Output Power
Gain @ P
IN
= -22 dBm
Gain @ P
IN
= -10 dBm
Gain @ P
IN
= -6 dBm
Gain Variation over band (2400-2500 MHz)
Harmonics
Isolation in “OFF” State, P
IN
= +2dBm,
V
RAMP
= 0V
Reverse Isolation
Stability (P
IN
= +2dBm, Load VSWR = 6:1)
3
3
3, 4
2
2
2
15
32
25.5
25.0
23.5
Note
3
1
1
3
3
45
26.5
25.4
24.0
0.7
-40
20
42
1.0
-35
Min.
2400
20
22.5
-20
1
Typ.
Max.
2500
23.5
0
2
120
Unit
MHz
dBm
dBm
dB
dBm/V
%
dB
dB
dB
dB
dBc
dB
dB
G
G
VAR
2f,3f,4f,5f
IS
21
I
OFF
IS
12
I
STAB
All non-harmonically related outputs less than
-50 dBc
Notes:
(1) Guaranteed by production test at T
A
= 25°C.
(2) Guaranteed by design only
(3) Guaranteed by design and characterization
(4) Harmonic levels are greatly affected by topology of external matching networks.
13-DST-01
Rev 3.2
Aug 29/02
4 of 10
RangeCharger
TM
PA2423L
2.4 GHz Power Amplifier IC
Final
Typical Performance Characteristics
Test Conditions: SiGe PA2423L-EV: V
CC0
= V
CC1
= V
CC2
= V
RAMP
= 3.3V, V
CTL
= 3.3V, P
IN
= +2 dBm, T
A
= 25°C,
f = 2.45GHz, input and output externally matched to 50Ω unless otherwise noted
P
OUT
, I
CC
vs Supply Voltage
24
23
150
142
134
126
118
110
102
94
86
78
70
2.4
2.6
2.8
3
3.2
3.4
3.6
P
OUT
, Gain vs Input Power
25
30
25
20
15
10
5
-28
-24
-20
-16
-12
-8
-4
0
4
8
Output Power (dBm)
22
21
20
19
18
17
16
15
14
Supply current (mA)
Output Power
(dBm)
20
15
10
5
0
Input Power (dBm)
Pout
Gain
V
CC
(V)
Pout
Icc
PAE vs Input Power
50
45
40
23.0
22.5
22.0
21.5
21.0
20.5
20.0
19.5
19.0
18.5
P
OUT
, I
CC
vs Frequency
135
130
125
120
115
110
105
100
95
90
P
OUT
(dBm)
PAE (%)
30
25
20
15
10
5
0
-28
-24
-20
-16
-12
-8
-4
0
4
18.0
85
2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65
Frequency (GHz)
Pout
Icc
Input Power(dBm)
13-DST-01
Rev 3.2
Aug 29/02
5 of 10
I
CC
(mA)
35
Gain (dB)
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