This document contains information on a new product.
Specifications and information are subject to change without notice

WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com June 2002
The Communications Edge
TM

Preliminary Product Information
AG303
InGaP HBT Gain Block

Functional DiagramProduct Features

• DC - 5000MHz
• +13 dBm P1dB at 900MHz
• +27 dBm OIP3 at 900MHz
• 20.5 dB Gain at 900MHz
• Single Voltage Supply
• SOT-363 or SOT-86 SMT
Package
• Internally matched to 50 Ω




Product Description

The AG303 is a general-purpose buffer amplifier that offers high
dynamic range in a low-cost surface-mount package. At 900 MHz,
the AG303 typically provides 20.5 dB of gain, +27 dBm Output
IP3, and +13 dBm P1dB. The device combines dependable
performance with consistent quality to maintain MTBF values
exceeding 100 years at mounting temperatures of +85°C and is
housed in a SOT-363 & SOT-86 industry standard SMT packages.

The AG303 consists of Darlington pair amplifiers using the high
reliability InGaP/GaAs HBT technology process technology and
only requires DC-blocking capacitors, a bias resistor, and an
inductive RF choke for operation.

The broadband MMIC amplifier can be directly applied to various
current and next generation wireless technologies such as GPRS,
GSM, CDMA, W-CDMA, and UMTS. In addition, the AG303
will work for other various applications within the DC to 5 GHz
frequency range such as CATV and fixed wireless.

RF IN
GND
RF OUT
GND
GND
GND
AG303-63
Typical Parameters
Parameter
1
Units Typical
Frequency MHz 900 1900
S21 dB 20.5 19
S11 dB -20 -15
S22 dB -20 -20
Output P1dB dBm +13 +12
Output IP3 dBm +27 +25
Noise Figure dB 3.6 3.6
Supply Voltage V 5 5
Device Current mA 35 35
1. Data represents typical performance in an application board with
T = 25ºC, V
s
= +5 V, and R
bias
= 30 Ω in a 50 Ω system.


Ordering Information
Part No. Description
AG303-63 InGaP HBT Gain Block
SOT-363 Style Package

(Available in Tape & Reel)
AG303-86 InGaP HBT Gain Block
SOT-86 Style Package

(Available in Tape & Reel)
AG303-63PCB Fully Assembled Application Board
AG303-86PCB Fully Assembled Application Board



Specifications
Parameters
1
Units Min Typ Max
Frequency Range MHz DC-5000
S21 - Gain dB 20.5
S11 - Input Return Loss dB -15
S22 - Output Return Loss dB -15
Output P1dB dBm +13
Output IP3 dBm +27
Noise Figure dB 3.6
Device Voltage V 4.0
Device Current mA 35
Test conditions unless otherwise noted
1. T = 25ºC, Supply Voltage = +5 V, R
bias
= 30 Ω, Frequency = 900MHz, 50 Ω System.
2. 3OIP measured with two tones at an output power of -5 dBm/tone separated by 10MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.

Absolute Maximum Ratings
Parameters Rating
Operating Case Temperature -40 to +85 °C
Storage Temperature -40 to +125 °C
Operation of this device above any of there parameters may cause permanent damage

Application Circuit

RF in
GND
RF OUT
GND
AG33
AG303-86
AG303
C1
Blocking
Capacitor
RF OUT
L1
RF
Choke
VS = +5 V
IS = 35 mA
C3
Bypass Capacitor
C2
Blocking
Capacitor
R1
30 Ω
RF IN