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 May 2004
AH118
¼ Watt, High Linearity InGaP HBT Amplifier Product Information
The Communications Edge
TM
Product Features
• 60 – 2500 MHz
• +24.7 dBm P1dB
• +40.5 dBm Output IP3
• 20.4 dB Gain @ 900 MHz
• 16.5 dB Gain @ 1900 MHz
• +5V Single Positive Supply
• SOT-89 SMT Package

Applications
• Final stage amplifiers for Repeaters
• Mobile Infrastructure
• CATV / DBS
• Defense / Homeland Security


Product Description
The AH118 is a high dynamic range driver amplifier in a
low-cost surface mount package. The InGaP/GaAs HBT
is able to achieve high performance across a broad range
with +40.5 dBm OIP3 and +24.7 dBm of compressed
1dB power. It is housed in an industry standard SOT-89
SMT package. All devices are 100% RF and DC tested.

The AH118 is targeted for use as a driver amplifier in
wireless infrastructure where high linearity and medium
power is required. Internal biasing allows the AH118 to
maintain high linearity over temperature and operate
directly off a single +5V supply. This combination
makes the device an excellent candidate for transceiver
line cards in current and next generation multi-carrier 3G
base stations.

Functional Diagram

1 32
4


Function Pin No.
Input / Base 1
Output / Collector 3
Ground 2, 4

Specifications
Parameter Units Min Typ Max
Frequency MHz 1900
S21 - Gain dB 13.5 16.5
S11 - Input R.L. dB -12
S22 - Output R.L. dB -18
Output P1dB dBm +23 +24.7
Output IP3 dBm +39.5 +40.5
IS-95A Channel Power
@ -45 dBc ACPR
dBm +18
W-CDMA Channel Power
@ -45 dBc ACLR, 2140 MHz
dBm +16.7
Noise Figure dB 4.3
Operating Current Range mA 140 160 175
Device Voltage V +5

Test conditions unless otherwise noted.
1. T = 25ºC, Vsupply = +5 V, Frequency = 1900 MHz, in tuned application circuit.
2. 3OIP measured with two tones at an output power of +11 dBm/tone separated by 1 MHz. The
suppression on the largest IM3 product is used to calculate the 3OIP using a 2:1 rule.

Typical Performance
Parameter Units Typical
Frequency MHz 900 1900 2140
S21 - Gain dB 20.4 16.5 16.3
S11 - Input R.L. dB -15 -12 -15
S22 - Output R.L. dB -12 -18 -16
Output P1dB dBm +24.2 +24.7 +24.7
Output IP3 dBm +40 +40.5 +40.5
IS-95A Channel Power
@ -45 dBc ACPR,
dBm +18.2 +18
W-CDMA Channel Power
@ -45 dBc ACLR
dBm +16.7
Noise Figure dB 4.0 4.3 4.8
Supply Bias +5 V @ 160 mA

Typical parameters reflect performance in a tuned application circuit:
Supply Voltage = +5 V, I = 160 mA, +25° C





Absolute Maximum Rating Ordering Information
Parameter Rating Part No. Description
Operating Case Temperature -40 to +85 °C AH118-89 ¼ Watt, High Linearity InGaP HBT Amplifier
Storage Temperature -65 to +150 °C AH118-89PCB900 900 MHz Evaluation Board
RF Input Power (continuous) +15 dBm AH118-89PCB1900 1900 MHz Evaluation Board
Device Voltage +6 V AH118-89PCB2140 2140 MHz Evaluation Board
Device Current 220 mA

Operation of this device above any of these parameters may cause permanent damage.