Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 6/03A
Parameter
Condition
Symbol
Min.
Typ.
Max.
Unit
Frequency Range
MHz
1800
2500
dB
Small Signal Gain
F = 2.45 GHz
S
21
17
19
22
dB
Output Power at 1 dB compression
F = 2.45 GHz
P
1 dB
26
27
dBm
Linear Output Power
1
F = 2.45 GHz, I
C
= 110 mA
P
Out
17
18
dBm
First Sidelobe
2
F = 2.45 GHz, I
C
= 170 mA,
-40
dBc
P
Out
= 22.5 dBm
Second Sidelobe
2
F = 2.45 GHz, I
C
= 186 mA,
-54
dBc
P
Out
= 22.5 dBm
Operating Voltage
Amplifier DC voltage
V
D
2.5
3.3
4.5
V
Reverse Isolation
Isol.
30
dB
Current Consumption
P
Out
2
= 23.5 dBm
186
mA
P
Out
2
= 22.5 dBm
170
mA
P
Out
1
= 17 dBm
95
mA
Quiescent
1
I
QO
47
mA
3.3 V, 802.11g/b
Linear Power Amplifier
Features
High Linearity @ 25 dBm
DC Current: 110 mA @ 19 dBm
802.11b/g OFDM Compliant
18002500 MHz Operation
19 dB Small Signal Gain
27 dBm P
1 dB
@ 2.4 GHz
Uses Single DC Bias Supply
Low Cost Plastic Package
Available on Tape & Reel
AP178-321
Description
The AP178-321 is a linear, medium power amplifier
designed for low voltage operation in a 2.42.5 GHz ISM
band having linear and high-efficiency performance with
802.11b/g signals. The device is manufactured on
advanced InGap HBT process and housed in a 12 Pin
3 x 3 mm QFN package.
Electrical Specifications at 25C
Characteristic
Value
RF Input Power
20 dBm
Supply Current
800 mA
Supply Voltage
5 V
Operating Temperature
-65C to +125C
Storage Temperature
-65C to +125C
Absolute Maximum Ratings
-321
0.008 (0.20 mm)
SEATING PLANE
0.118 (3.00 mm)
PIN 1
INDICATOR
PIN 1 INDICATOR
0.118
(3.00 mm)
0.001
(0.02 mm)
0.030
(0.75 mm)
0.002
(0.05 mm)
EXPOSED PAD
0.029
(0.73 mm)
0.017
(0.435 mm) SQ.
0.007
(0.180 mm)
0.0196
(0.50 mm) BSC
0.057 (1.45 mm) SQ.
+ 0.004 (0.10 mm)
- 0.006 (0.15 mm)
0.022 (0.55 mm)
0.004 (0.10 mm)
0.009 (0.23 mm)
+ 0.003 (0.07 mm)
- 0.002 (0.05 mm)
V
CC
= 3.3 V, I
C
= 90 mA (unless otherwise specified)
1. Specifications are defined for the evaluations board below with the 802.11g
signal at 36 Mbit/s using 16 QAM OFDM.
2. Specifications are defined for the evaluations board below with the 802.11b
signal at 11 Mbit/s with Cos = 0.85 filter.
3.3 V, 802.11g/b Linear Power Amplifier
AP178-321
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 6/03A
I
CC
vs. Output Power
Output Power (dBm)
Collector Current (mA)
60
70
80
90
100
110
120
10
12
14
16
18
20
Iq = 40 mA
Iq = 47 mA
Iq = 57 mA
EVM vs. Output Power
Output Power (dBm)
EVM (%)
0
1
2
3
4
5
6
7
8
10
12
14
16
18
20
Iq = 40 mA
Iq = 47 mA
Iq = 57 mA
Typical Performance Data
3.3 V, 802.11g/b Linear Power Amplifier
AP178-321
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 6/03A
C
10
1.5 pF
L
5
1 nH
(Printed
Meander)
C
9
C
11
20 pF
GND
GND
1
Input
2
V
B
Q1
3
V
REG
4
V
B
Q2
5
N/A
6
N/A
7
N/A
8
GND
9
Output
10
Output
11
Output
12
NC
13
V
CC1
14
V
CC1
15
V
CC1
16
AP178-321
L
4
22 nH
(0603)
10 p
0.1
F
4.7
F
0.1
F
GND
V
CC
Output
C
5
2 p
C
7
560 p
GND
GND
C
6
20 p
Input
PA_PE
R
4
270
R
5
Not Used
L
3
22 nH
T
1
0.35 x 0.6 mm
GND
GND
R
1
560
R
2
4.3
R
3
12 k
GND
L
1
R
6
3 k
C
12
10 pF
D
2
SMS7630
D
1
GND
C
13
100 p
R
7
56 k
+VDet
Q
1
PUMZ1
Q
2
C
1
47
F
C
3
1 n
GND
BLM11HA471
3.3 V
3.2 V
GND
C
2
GND
C
8
C
4
GND
GND
T
2
Evaluation Board Schematic
Evaluation Board Layout (Top View)
Evaluation Board Layout (Bottom View)
PDF 
ZIP