Advanced Data Sheet
Product Description
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.
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.
STQ-3016
2500 - 4000 MHz
Direct Quadrature Modulator
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
BBQP
VCC
VEE
LOP
LON
VEE
SD
BBIP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
BBQN
VCC
VEE
RFP
RFN
VEE
Product Features
LO
QUADRATURE
GENERATOR
•
•
•
•
•
•
•
•
•
•
•
•
2500-4000 MHz operating frequency
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
Applications
VCC
BBIN
Digital communication system
Spread spectrum communication systems
GMSK, QPSK, QAM, SSB moduators
Fixed wireless communication systems
Key Specifications
Parameters
Frequency Range
Output P1dB
Carrier Feedthrough
Sideband Suppression
Broadband Noise Floor
LO Drive Level
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.
Test Conditions (V
s
=5.0V, I=82mA, T=25ºC)
Unit
MHz
Min.
2500
Typ.
Max.
4000
f
LO
= 3500 MHz
f
LO
= 3500 MHz, unoptimized
f
LO
= 3500 MHz
f
LO
= 3500 MHz, baseband inputs tied to 1.9V
DC
,
-20 MHz offset from carrier
dBm
dBm
dB
dBm/Hz
dBm
-9
+1
-40
33
-153
-6
-3
522 Almanor Ave., Sunnyvale, CA 94086
Phone: (800) SMI-MMIC
1
http://www.stanfordmicro.com
05/07/01 rev 2.0
STANFORD [ STANFORD MICRODEVICES ]
