IBM3115Q012
Product Overview
Advance
Features
Tri-Band GSM Integrated Voltage Controlled Oscillator
Applications
• IBM Silicon Germanium BiCMOS 5DM
Technology with Cu Metallurgy
• GSM/DCS/PCS tri-band direct conversion
receivers
• Small-footprint, low-profile QFN-12 package
• Two tuning bands covering 3580-3980 MHz
• Analog frequency tune: 0.4-2.4 V
• Low phase noise: -139 dBc/Hz typical at
3MHz offset
• Low supply push: 12 MHz/V typical
• Low current: 13 mA typical
• Standby mode
IBM3115Q012 iVCO (3x3x0.9mm nom., QFN-12)
Introduction
The IBM3115Q012 is a Silicon Germanium (SiGe)
Integrated Voltage Controlled Oscillator (iVCO) with
a frequency coverage of 3580-3980 MHz. With its
low phase noise performance and wide bandwidth,
the iVCO is suitable for use in GSM/DCS/PCS tri-
band direct conversion receivers.
Q tank circuit elements such as inductors, varactors,
and band tuning elements are integrated on-chip.
The QFN-12 iVCO is a low cost alternative to hybrid
modules with a size savings of up to 85% in board
footprint.
The IBM3115Q012 iVCO has two frequency bands
selectable by a single input pin (VSW). Frequency
tuning in each band is controlled by an analog
voltage applied to the VT pin. The chip also features
an OFF pin to enable a standby mode for power
conservation.
The iVCO is a fully integrated SiGe device fabri-
cated using IBM’s BiCMOS 5DM Technology. High
IBM3115Q012 Pin Out and Block Diagram
NC12 GND VCC
Ordering Information
To order samples or an evaluation board, please
visit the IBM Microelectronics Division Web Site at:
12
11
10
VSW 1
NC2 2
GND 3
9 VT
www.ibm.com/chips/support/howtobuy.html
CONTROL
Part Number
Description
Packaging
8 GND
7 OFF
IBM3115Q012
IBM3115
iVCO
QFN-12
--
Evaluation Board
Note: The IBM3115Q012 is susceptible to damage
from electrostatic discharge (ESD). Observe normal
ESD precautions at all times when handling or using
the device.
4
5
6
OUT_P NC5 OUT_N
February 8, 2002
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