TriQuint Semiconductor, Inc • Phone +1-503-615-9000 • FAX: +1-503-615-8900 • e-mail: info-sales@tqs.com • Web site: www.TriQuint.com
WJA1021
+5V Active-Bias InGaP HBT Gain Block
Product Features
•
•
•
•
•
•
•
•
•
•
Applications
•
•
•
•
Specifications
1. Test conditions: 25 ºC, Supply Voltage = +5 V, 50 Ω System. S-parameters and 3OIP measured at
2. 3OIP measured with two tones at an output power of 4 dBm/tone separated by 1 MHz. The
Absolute Maximum Rating
Operation of this device above any of these parameters may cause permanent damage.
Parameter
Operational Bandwidth
Test Frequency
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Noise Figure
Device Voltage
Device Current
Parameter
Storage Temperature
Supply Voltage
Thermal Resistance, Rth
Junction Temperature
Input Power
50 – 4000 MHz
17.5 dB Gain @ 1.9GHz
+19 dBm P1dB @ 1.9GHz
+36.5 dBm OIP3 @ 1.9GHz
+5V Single Supply
Low current draw (90mA)
Unconditionally stable
Internally matched to 50 Ω
Robust 1000V ESD, Class 1C
Lead-free/green/RoHS-compliant
SOT-89 package
GSM, PCS, CDMA, WCDMA
WiMAX, WiBro
Repeaters, BTS Transceivers
RFID
device pins. All other specifications measured on evaluation board.
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
(2)
(1)
Units
MHz
MHz
dBm
dBm
mA
dB
dB
dB
dB
V
Rating
-55 to +150 °C
+6.5 V
78.8 °C / W
150 °C
+24 dBm
The WJA1021 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 1.9 GHz,
the WJA1021 typically provides 17.5 dB gain, +36.5 dBm
OIP3, and +19 dBm P1dB. The device is housed in a lead-
free/green/RoHS-compliant
SMT package using a NiPdAu plating to eliminate the
possibility of tin whiskering.
The WJA1021 consists of 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 1.9 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.
WJA1021 is ideal for general purpose applications such as
LO buffering or amplification and pre-driver stages within
the 50 to 4000 MHz frequency range.
+33.5
Min
16.1
50
80
+36.5
Typ
1900
17.5
90.5
+19
-15
-10
6.3
Product Description
5
Max
4000
19.1
100
industry-standard
Typical Performance
3. Listed typical performance parameters measured on evaluation board.
Ordering Information
Standard tape / reel size = 1000 pieces on a 7” reel
Parameter
Frequency
S21
S11
S22
Output P1dB
Output IP3
Noise Figure
Part No.
WJA1021
WJA1021-PCB
(2)
Specifications and information are subject to change without notice
Description
+5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
50 – 4000 MHz Fully Assembled Eval. Board
SOT-89
Units
MHz
dBm
dBm
dB
dB
dB
dB
The
Functional Diagram
+20.2
+36.9
19.5
200
-12
-20
5.3
Output/Bias
(3)
Function
Ground
RF IN
Input
1
+20.1
+38.9
18.4
900
-19
-13
5.6
Typical
GND
GND
2
4
Page 1 of 4
+36.6
1900
16.7
+19
-29
-10
6.3
RF OUT
Pin No.
3
2, 4
1
3
2100
Oct. 2009
16.4
+18
+36
-25
-10
6.6