WJA1001
Product Features
50 – 3000 MHz
19 dB Gain @ 900MHz
+20 dBm P1dB @ 900MHz
+45 dBm OIP3 @ 900MHz
+5V Single Supply
Low current draw (100 mA)
Unconditionally stable
Internally matched to 50
Robust 1000V ESD, Class 1C
Lead-free/green/RoHS-compliant
SOT-89 package
+5V Active-Bias InGaP HBT Gain Block
Product Description
The WJA1001 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 900 MHz,
the WJA1001 typically provides 19 dB gain, +45 dBm OIP3,
and +20 dBm P1dB. The device is housed in a lead-
free/green/RoHS-compliant SOT-89 SMT package using a
NiPdAu plating to eliminate the possibility of tin whiskering.
The WJA1001 consists of a Darlington-pair amplifier using
a high reliability InGaP/GaAs HBT process technology.
The amplifier has been optimized internally to offer very
high linearity performance at 1 GHz while drawing very
low current. The MMIC amplifier is internally matched to
50Ω
and only requires DC-blocking
capacitors and a bias
inductor for operation. An internal active bias is designed
to enable stable performance over temperature and allow
for operation directly from a +5V supply voltage.
The broadband amplifier can be directly applied to various
current and next generation wireless technologies such as
GSM, CDMA, W-CDMA, WiBro, and WiMAX. The
WJA1001 is ideal for general purpose applications such as
LO buffering or amplification and pre-driver stages within
the 50 to 3000 MHz frequency range.
Functional Diagram
GND
4
1
RF IN
2
GND
3
RF OUT
Function
Input
Output/Bias
Ground
Pin No.
1
3
2, 4
Applications
GSM, PCS, CDMA, WCDMA
WiMAX, WiBro
Repeaters, BTS Transceivers
RFID
Specifications
(1)
Parameter
Operational Bandwidth
Test Frequency
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
(2)
Noise Figure
Device Voltage
Device Current
Typical Performance
(3)
Units
MHz
MHz
dB
dB
dB
dBm
dBm
dB
V
mA
Min
50
Typ
900
19
12
14
+19.7
+44.5
5.4
5.0
100
Max
3000
Parameter Units
Frequency
S21
S11
S22
Output P1dB
Output IP3
(2)
Typical
200
19.6
-13
-22
+39.7
4.8
500
19.2
-15
-20
+39
5.0
900
18.5
-18
-15
+19.7
+44
5.4
1900
16.7
-30
-11
+19.2
+34
6.1
2100
16.4
-26
-12
+18.1
+34
6.4
MHz
dB
dB
dB
dBm
dBm
dB
+20.4 +20.3
Noise Figure
3. Listed typical performance parameters measured on evaluation board.
1. Test conditions: 25 ºC, Supply Voltage = +5 V, 50
System. S-parameters and 3OIP measured at
device pins. All other specifications measured on evaluation board.
2. 3OIP measured with two tones at an output power of +8 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
Absolute Maximum Rating
Parameter
Storage Temperature
Supply Voltage
Input Power
θ
jc
(junction to paddle)
Maximum Junction Temperature
-55 to +150
C
+6.5 V
+24 dBm
80.6
C
/ W
150
C
Rating
Ordering Information
Part No.
WJA1001
WJA1001-PCB
Description
+5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
50 – 3000 MHz Fully Assembled Eval. Board
Operation of this device above any of these parameters may cause permanent damage.
Standard tape / reel size = 1000 pieces on a 7 reel
Specifications and information are subject to change without notice
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
Page 1 of 4
January 2008
WJCI [ WJ COMMUNICATION. INC. ]
