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Sirenza 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. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product for use in life-support devices and/or systems. Copyright 2006 Sirenza Microdevices, Inc. All
worldwide rights reserved.
303 South Technology Court
Phone: (800) SMI-MMIC
http://www.sirenza.com
Broomfield, CO 80021
1
EDS 102092 Rev B
Preliminary Data Sheet
The Sirenza Microdevices' SRF-1016 is a quadrature demodulator
RFIC designed for UHF and microwave receiver IF applications. This
device features switchable gain control, high P1dB, and excellent I/Q
amplitude and phase balance.
Use of this highly integrated device can result in lower component
count, a more compact assembly, and higher transceiver card yields.
The device is packaged in an industry standard 16 pin TSSOP with
exposed paddle for superb RF and thermal ground.
The matte tin finish on Sirenza's lead-free package utilizes a post
annealing process to mitigate tin whisker formation and is RoHS com-
pliant per EU directive 2002/95. This package is also manufactured
with green molding compounds that contain no antimony trioxide nor
halogenated fire retardants.
Functional Block Diagram
SRF-1016
SRF-1016Z
65 - 300 MHz
Silicon Germanium IF Receiver
Product Features
Applications
·
Available in Lead Free, RoHS compliant, and
Green packaging
·
Gain control in 20dB steps
·
Excellent I/Q amplitude and phase balance
·
Output P1dB > +4 dBm over all gain settings
·
Digital and spread spectrum communication
systems
·
Cellular, PCS, DCS, 2G, 2.5G, 3G transceivers
·
ISM band transceivers
·
Point-to-point microwave receivers
·
Broadband wireless systems
Product Description
16 pin TSSOP with Exposed Ground Pad
Package Footprint: 0.197 x 0.252 inches (5.0 x 6.4 mm)
Package Height: 0.039 inches (1.0 mm)
Product Specifications IF Input (Test conditions are on page 2)
Parameters
Test Conditions
Unit
Min.
Typ.
Max.
IF Frequency Range
MHz
65
300
INP/INN Return Loss
50 ohm nominal differential input, Note 1
dB
20
INP/INN Common mode voltage
Internally generated
V
2
Gain
High gain setting
GC1 = GC2 = +5V
dB
28
31
33
Input P1dB
dBm
-26
-24
DSB Noise Figure
dB
11
Gain
Medium gain setting
GC1 = +5V
GC2 = 0V
dB
9
12
14
Input P1dB
dBm
-8
-6
DSB Noise Figure
dB
14.5
Gain
Low gain setting
GC1 = GC2 = 0V
dB
-9
-6.5
-4
Input P1dB
dBm
12
14
DSB Noise Figure
dB
31
Pb
RoHS Compliant
&
Package
Green
LOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LON
BBQP
BBIN
GC1
VEE
BBIP
INP
BBQN
INN
0/90
VCC
GC2
VCC
VCC
VEE
VCC
303 South Technology Court
Phone: (800) SMI-MMIC
http://www.sirenza.com
Broomfield, CO 80021
2
EDS102092 Rev B
Preliminary Data Sheet
SRF-1016 SiGe IF Receiver
Test Conditions
V
CC
= +5V
DC
, T = +25șC,
LO Input = 0dBm, 200 MHz, IF Input = 201 MHz
Gain State
GC1 Voltage
GC2 Voltage
IF Power
Low Gain
0V
0V
0 dBm
Medium Gain
+5V
0V
-20 dBm
High Gain
+5V
+5V
-40 dBm
Product Specifications I/Q Output
Parameters
Additional Test Conditions
Unit
Min.
Typ.
Max.
I/Q Output Frequency Range
MHz
DC
500
I/Q Output Amplitude Balance
dB
-0.2
0.2
I/Q Output Phase Balance
deg
-2
2
I/Q Output Common-mode Voltage
V
2.5
I/Q Output Return Loss
50 ohm nominal differential output, Note 2
dB
20
Product Specifications LO Input
Parameters
Additional Test Conditions
Unit
Min.
Typ.
Max.
LO Frequency Range
MHz
65
300
LO Input Level
dBm
-3
0
+3
LO Return Loss
50 ohm nominal differential input, Note 1
dB
20
Product Specifications Miscellaneous
Parameters
Additional Test Conditions
Unit
Min.
Typ.
Max.
Supply Voltage (V
CC
)
V
+4.75
+5.0
+5.25
Supply Current (I
CC
)
mA
195
Thermal Resistance
Hot spot on die to lead
șC/W
35
45
GC1, GC2 Input V
IL
Logic level zero
V
0
0.3xV
CC
GC1, GC2 Input V
IH
Logic level one
V
0.7xV
CC
V
CC
GC1, GC2 Input Impedance
kohm
40
Absolute Maximum Ratings
Parameters
Value
Unit
Supply Voltage
6.0
V
DC
LO Input
+10
dBm
IF Input
+10
dBm
Operating Temperature
-40 to +85
șC
Storage Temperature
-65 to +150
șC
Operation of this device beyond any one of these limits may
cause permanent damage. For reliable continuous operation the
device voltage and current must not exceed the maximum operat-
ing values specified in the product specifications table.
Part Number Ordering Information
Number
Reel Size
Devices/Reel
SRF-1016
7"
1000
SRF-1016Z
7"
1000
Caution: ESD Sensitive
Appropriate precaution in handling, packaging
and testing devices must be observed.
Note 1: To achieve 20 dB of port match, the parasitic inductance of the package, board, and L4, L5 must be matched out at
the center frequency with a series capacitor.
Note 2: To achieve 20 dB port match above 100 MHz, the parasitic inductance of the package must be matched out.
303 South Technology Court
Phone: (800) SMI-MMIC
http://www.sirenza.com
Broomfield, CO 80021
3
EDS102092 Rev B
Preliminary Data Sheet
SRF-1016 SiGe IF Receiver
The Sirenza SRF-1016 is a variable gain I-Q demodulator
designed for use in receiver IF sections, as shown in the
figure below. It consists of five subcircuits: two cascaded
switched gain stages, a matched pair of mixers, and a LO
quadrature generator. This part is also available in a higher
frequency version, the SRF-2016.
The gain stages are broadband differential amplifiers each
with a digital control pin to set the gain. The gain control
pins act independently of each other. Since the amplifiers
have approximately the same gain, setting GC1 high and
GC2 low results in approximately the same gain as setting
GC1 low and GC2 high. The former setting is preferred
because it offers better noise figure. The IF input is differ-
ential with internal bias circuitry to set the common mode
voltage. The use of blocking capacitors to facilitate AC
coupling is highly recommended to avoid changing the
common mode voltage. Either input may be driven single-
ended if the other input is connected to ground through an
AC short such as a 1000 pF capacitor. This typically
results in slightly lower input P1dB.
The two matched mixers are configured with the quadra-
ture LO generator to provide in-phase and quadrature
baseband outputs. These can be fed through ADCs to a
DSP engine, or can be fed into a low frequency 90 degree
hybrid for image rejection. Alternatively, the IF signal can
be extracted from the BBI port by injecting DC into the LO
port.
The LO and IF ports offer a differential 50 ohm impedance.
The package (and in the case of the input port, the parallel
L-R network) adds inductance that tends to degrade return
loss. This can easily be matched out with a series capaci-
tor. The 27 pF capacitor on the evaluation board is appro-
priate for 200 MHz operation; larger capacitors should be
used for lower frequencies.
The SRF-1016 has high gain at UHF frequencies, so insta-
bility can result if there is poor power supply decoupling or
undesired coupling from the input to the output. The follow-
ing considerations should be observed when laying out a
PC board:
· Follow the general layout of the evaluation board, keep-
ing the power supply decoupling capacitors as close to
the package as possible.
· The back of the package, the two ground pins and the
decoupling capacitors should connect directly to ground,
preferably to a large dedicated ground plane.
· Use the parallel L-R circuits on the input pins.
· Ensure that the input signal tracks are routed far from
the output tracks.
· The Vcc pins are not internally connected, so all must be
connected together externally with the specified decou-
pling capacitors.
The figures on page 4 illustrate a typical SRF-1016's per-
formance with respect to temperature. Note that these
numbers include the effect of the R-L network in the IF
port.
The frequency response of the IF and LO ports is domi-
nated by the L-R network on the input. When de-embed-
ded, the gain and P1dB response is within 0.5 dB from
65 MHz to 300 MHz.
The SRF-1016 features immunity from changes in LO
power. The gain typically changes by less than 0.6 dB over
a 6 dB range of LO power. Also note the excellent I/Q bal-
ance, which typically falls within 0.1 dB and 1 degree from
65 MHz to 300 MHz, and varies less than 0.05 dB and 0.5
degree over temperature (-40 to +85C).
The package dimensions are shown on page 5. Note that
heat is removed from the part via the heat slug, so this slug
must be properly soldered to a copper plane under the
part.
Evaluation boards are available for this device, and a
description of the board is shown on page 6. Note that the
evaluation board uses baluns on the I/Q outputs, and
these baluns limit the low frequency response of the
device. For true baseband operation, the baluns should be
removed, and the differential signals used directly.
Q
ADC
IF
Filter
SRF
1016
RF
Filter
LNA
I
ADC
Typical use for the SRF-1016 in a receiver
employing digital I/Q demodulation.
BB
Filter
BB
Filter
303 South Technology Court
Phone: (800) SMI-MMIC
http://www.sirenza.com
Broomfield, CO 80021
4
EDS102092 Rev B
Preliminary Data Sheet
SRF-1016 SiGe IF Receiver
Gain vs. Temperature
-10
-5
0
5
10
15
20
25
30
35
-40
-20
0
20
40
60
80
Temperature, C
Ga
in
, d
B
Low Gain
Med Gain
High Gain
Output P1dB vs. Temperature
5
6
7
8
9
10
-40
-20
0
20
40
60
80
Temperature, C
Out
put
P1dB,
dBm
Low Gain
Med Gain
High Gain
Noise Figure vs. Temperature
0
5
10
15
20
25
30
35
-40
-20
0
20
40
60
80
Temperature, C
N
o
i
se Fi
gur
e,
dB
Low Gain
Med Gain
High Gain
Output P1dB vs. LO Power
5
6
7
8
9
10
-4
-3
-2
-1
0
1
2
3
4
LO Power, dBm
O
u
t
put
P1dB,
dBm
Low Gain
Med Gain
High Gain
Amplitude Difference vs. LO Frequency
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0
100
200
300
400
500
600
700
800
LO Frequency, MHz
A
m
pl
i
t
ude D
i
f
f
e
r
e
nce,
dB
Phase Difference vs. LO Frequency
89
89.5
90
90.5
91
91.5
92
0
100
200
300
400
500
600
700
800
LO Frequency, MHz
P
h
ase D
i
f
f
e
r
e
n
ce,
d
e
g
r
ees
Unless otherwise stated, measurements were taken with an IF frequency of 200 MHz, an LO frequency of 201 MHz, a base-
band output of 1 MHz, an LO power of 0 dBm, at room temperature, with a supply voltage of 5 volts. Measurements were
done on the evaluation board.
303 South Technology Court
Phone: (800) SMI-MMIC
http://www.sirenza.com
Broomfield, CO 80021
5
EDS102092 Rev B
Preliminary Data Sheet
SRF-1016 SiGe IF Receiver
Package Dimensions
Suggested PCB Pad Layout
Pin Out Description
Pin #
Function
Description
Additional Comments
1
BBIN
Baseband I-axis output (-)
self-biasing
2
BBIP
Baseband I-axis output (+)
self-biasing
3
VCC
Positive power supply
4
GC2
Gain control input, stage 2
5V CMOS levels
5
GC1
Gain control input, stage 1
5V CMOS levels
6
VEE
Ground
7
VCC
Positive power supply
8
INP
IF input (+)
self-biasing; AC-couple
9
INN
IF input (-)
self-biasing; AC-couple
10
VCC
Positive power supply
11
VEE
Ground
12
LON
LO input (-)
self-biasing; AC-couple
13
LOP
LO input (+)
self-biasing; AC-couple
14
VCC
Positive power supply
15
BBQN
Baseband Q-axis output (-)
self-biasing
16
BBQP
Baseband Q-axis output (+)
self-biasing
0.118
(3.0)
0.118
(3.0)
0.049
(1.25)
0.272 (6.9)
0.035
(0.9)
0.010 (0.25) via
- Indicates metalization
- vias connect pad to underlying ground plane
all units are in inches (mm)
0.012
(0.30)
0.014
(0.35)
0.024
(0.63)
0.028
(0.7)
EXPOSED
THERMAL
PAD ZONE
0.118 (3.0) SQ.
NOTES:
1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH
PROTRUSIONS OR GATE BURRS.
2. TOLERANCE ±0.1MM UNLESS OTHERWISE
SPECIFIED.
3. COPLANARITY: 0.1MM
4. CONTROLLING DIMENSION IS MILLIMETER,
CONVERTED INCH DIMENSIONS ARE NOT
NECESSARILY EXACT.
5. FOLLOWED FROM JEDEC MO-153.
XXX
XXXX
LOT ID
Dimensions in inches (mm)
Part #
Lot #
0.004 (0.1)
0.008 (0.2)
0.193 (4.9)
0.207 (5.25)
0°
8°
0.169 (4.3)
0.177 (4.5)
0.252 (6.4)
0.007 (0.19)
0.012 (0.30)
0.026 (.65)
0.031 (0.8)
0.041 (1.05)
0.0
0.006 (0.15)
0.018 (0.45)
0.030 (0.75)
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