Advanced Data Sheet
Product Description
STQ-3016
The Stanford Microdevices’ STQ-3016 is a direct quadra-
ture modulator targeted for use in a wide range of commu-
nications systems. This device features a wide 2500-4000
MHz operating frequency band, excellent carrier and side-
band suppression, and a low broadband noise floor.
2500 - 4000 MHz
Direct Quadrature Modulator
The STQ-3016 uses silicon germanium device technology
and delivers a typical output power of -13dBm with 50dB
IM3 suppression. A shutdown feature is included that,
when enabled, attenuates the output by 60dB.
16 pin TSSOP with Exposed Pad
Package Body: 0.20 x 0.17 x 0.04 (inches)
5.0 x 4.4 x 1.0 (mm)
Functional Block Diagram
Product Features
• 2500-4000 MHz operating frequency
1
2
3
4
5
6
7
8
16 BBQN
BBQP
VCC
VEE
• No external IF filter
• Very low noise floor performance
• Excellent carrier and sideband suppression
• Low LO drive requirements
• Shut-down feature
• Single 5 volt supply
• Supports wideband baseband input
15
VCC
14 VEE
13
LOP
LON
VEE
SD
RFP
LO
QUADRATURE
GENERATOR
12 RFN
11
VEE
Applications
10 VCC
• Digital communication system
• Spread spectrum communication systems
• GMSK, QPSK, QAM, SSB moduators
• Fixed wireless communication systems
BBIP
9
BBIN
Key Specifications
Parameters
Test Conditions (Vs=5.0V, I=82mA, T=25ºC)
Unit
MHz
dBm
dBm
dB
Min.
Typ.
Max.
Frequency Range
Output P1dB
2500
4000
fLO = 3500 MHz
fLO = 3500 MHz, unoptimized
LO = 3500 MHz
+1
-40
33
Carrier Feedthrough
Sideband Suppression
f
fLO = 3500 MHz, baseband inputs tied to 1.9VDC
-20 MHz offset from carrier
,
Broadband Noise Floor
LO Drive Level
dBm/Hz
dBm
-153
-6
-9
-3
See page 2 for general test conditions
The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or ommisions.
Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without
notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford Microdevices
product for use in life-support devices and/or systems.
Copyright 2000 Stanford Microdevices, Inc. All worldwide rights reserved.
522 Almanor Ave., Sunnyvale, CA 94086
Phone: (800) SMI-MMIC
1
http://www.stanfordmicro.com
05/07/01 rev 2.0