WJA1025 Datasheet, PDF (1/4 Pages) WJ Communication. Inc. – +5V Active-Bias InGaP HBT Gain Block

WJA1025
+5V Active-Bias InGaP HBT Gain Block
Product Features
Product Description
Functional Diagram
• Cascadable gain block
• 50 – 4000 MHz
• 17 dB Gain @ 1.9GHz
• +15.5 dBm P1dB @ 1.9GHz
• +32 dBm OIP3 @ 1.9GHz
• Operates from +5V @ 60mA
• Robust 1000V ESD, Class 1C
• RoHS-compliant SOT-89 package
Applications
• Wireless Infrastructure
• General Purpose
• Cellular GSM, PCS, UMTS
• W-CDMA, TD-SCDMA, WiMAX
The WJA1025 is a cascadable gain block that offers high
linearity in a low-cost surface-mount package. At 1.9 GHz,
the WJA1025 typically provides 17 dB gain, +32 dBm
OIP3, and +15.5 dBm P1dB. The device is housed in a
RoHS-compliant SOT-89 industry-standard SMT package
using a NiPdAu plating to eliminate the possibility of tin
whiskering.
The WJA1025 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
WJA1025 is ideal for general purpose applications such as
LO buffering, IF amplification and pre-driver stages within
the 50 to 4000 MHz frequency range.
GND
4
1
RF IN
2
GND
3
RF OUT
Function
Input
Output/Bias
Ground
Pin No.
1
3
2, 4
Specifications ⁽¹⁾
Typical Performance ⁽³⁾
Parameter
Operational Bandwidth
Test Frequency
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3 ⁽²⁾
Output IP2
Noise Figure
Device Voltage
Device Current
Units
MHz
MHz
dB
dB
dB
dBm
dBm
dBm
dB
V
mA
Min
50
Typ
1900
17
15
10
+15.6
+32.4
+41
5.5
5
60
Max
4000
1. Test conditions: 25 ºC, Supply Voltage = +5 V, 50 Ω 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 2 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.
Parameter
Frequency
S21
S11
S22
Output P1dB
Output IP3 ⁽²⁾
Output IP2
Noise Figure
Units
MHz
dB
dB
dB
dBm
dBm
dBm
dB
500
18.9
-14
-18
+18.2
+34.7
+47.1
4.8
Typical
900 1900 2140
18.4 16.8 16.2
-16 -37 -31
-14 -10 -10
+17.3 +15.6 +14.8
+33 +31.9 +31.5
+45.4 +41 +39.7
5.0 5.5 5.6
2500
15.4
-27
-13
+13.5
+30.6
+36.4
6.0
3. Listed typical performance parameters measured on evaluation board.
Absolute Maximum Rating
Parameter
Storage Temperature
Supply Voltage
Input Power
θ_jc (junction to paddle)
Maximum Junction Temperature
Rating
-55 to +150 °C
+6.5 V
+24 dBm
83.8 °C / W
150 °C
Ordering Information
Part No.
WJA1025
WJA1025-PCB
Description
+5V Active Bias InGaP HBT Gain Block
(lead-free/green/RoHS-compliant SOT-89 Package)
50 – 4000 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: [phone] • e-mail: [e-mail] • Web site: www.wj.com
Page 1 of 4 Dec 2007