WJA1035
Product Features
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50 – 4000 MHz
15 dB Gain
+16 dBm P1dB
+36 dBm OIP3
+5V Single Voltage Supply
Internal Active Bias Supply
Internally matched to 50
Ω
Lead-free / RoHS-compliant /
Green SOT-89 package
+5V Active-Bias InGaP HBT Gain Block
Product Description
The WJA1035 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 1.9 GHz,
the WJA1035 typically provides 15 dB gain, +36 dBm
OIP3, and +16 dBm P1dB. The device is housed in a lead-
free/green/RoHS-compliant SOT-89 industry-standard
SMT package using a NiPdAu plating to eliminate the
possibility of tin whiskering.
Functional Diagram
GND
4
1
2
GND
3
RF OUT
Applications
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GSM, PCS, CDMA, WCDMA
WiMAX, WiBro
Repeaters, BTS Transceivers
RFID
The WJA1035 consists of Darlington pair amplifiers using
a high reliability InGaP/GaAs HBT process technology.
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. A dropping bias
resistor is not required allowing the device to be biased
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
WJA1035 is ideal for general purpose applications such as
LO buffering, IF amplification and pre-driver stages within
the 50 to 4000 MHz frequency range.
RF IN
Function
Input
Output/Bias
Ground
Pin No.
1
3
2, 4
Specifications
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
Units
MHz
MHz
dB
dB
dB
dBm
dBm
dB
V
mA
Min
50
Typ
1900
14.8
19
16
+16.1
+35.6
6.2
5
65
Max
4000
Parameter
Frequency
S21
S11
S22
Output P1dB
Output IP3
(2)
Noise Figure
Units
MHz
dB
dB
dB
dBm
dBm
dB
500
14.3
-14
-19
+18.4
+36.9
5.3
Typical
900
14.2
-17
-19
+17.6
+35.6
5.7
1900
14
-19
-10
+16.1
+34.6
6.2
2100
14
-19
-10
+15.5
+34.5
6.8
1. Listed typical performance parameters measured on evaluation board.
1. Test conditions: 25 ºC, Supply Voltage = +5.00 V, 50
Ω
System.
2. 3OIP measured with two tones at an output power of 0 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
3. S-parameters and 3OIP measured at device pins. All other specifications measured on evaluation
board.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
Supply Voltage
Input Power
-40 to +85
°C
-55 to +150
°C
+6.5 V
+24 dBm
Rating
Ordering Information
Part No.
WJA1035
WJA1035-PCB
Description
+5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
50 – 4000 MHz Fully Assembled Eval. Board
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
WJ Communications, Inc
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Phone 1-800-WJ1-4401
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FAX: 408-577-6621
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e-mail: sales@wj.com
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Web site: www.wj.com
Page 1 of 4
Aug 2007
WJCI [ WJ COMMUNICATION. INC. ]
