RF2637 RECEIVE AGC AMPLIFIER Features

RF2637
RECEIVE AGC AMPLIFIER
Package Style: MSOP-8
Features
„
Supports Basestation
Applications
IN+ 1
8 VCC1
„
-55dB to +51dB Gain Control
Range @ 85MHz
IN- 2
7 VCC2
„
Single 3V Power Supply
GND 3
6 OUT+
„
-2dBm Input IP3
„
12MHz to 385MHz Operation
GAIN
CONTROL
GC 4
5 OUT-
Applications
„
3V Basestation Systems
„
General Purpose Linear IF
Amplifier
„
Commercial and Consumer
Systems
„
Portable Battery-Powered
Equipment
Functional Block Diagram
Product Description
The RF2637 is a complete AGC amplifier designed for the receive section of 3V cellular and PCS applications basestations. It is designed to amplify IF signals while
providing more than 90dB of gain control range. Noise Figure, IP3, and other specifications are designed for basestations. The IC is manufactured on an advanced
high frequency SiGe process, and is packaged in a standard miniature 8-lead plastic MSOP package.
Ordering Information
RF2637
RF2637PCBA-41X
Receive AGC Amplifier
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
9
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
LDMOS
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
DS111021
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RF2637
Absolute Maximum Ratings
Parameter
Value
Unit
Supply Voltage
-0.5 to +5.0
VDC
Control Voltage
-0.5 to +5.0
VDC
Input RF Power
+10
dBm
Operating Ambient Temperature
-40 to +85
°C
Storage Temperature
-40 to +150
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied.
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice.
RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free
per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric
materials and red phosphorus as a flame retardant, and <2% antimony in
solder.
Parameter
Min.
Specification
Typ.
Max.
Unit
Condition
T=25°C, 85MHz, VCC =3.0V, ZS =500:,
ZL =500:, 500: External Input Terminating
Resistor, 500: External Output Terminating
Resistor (Effective ZS =333:, Effective
ZL =250:) (See Application Example)
Overall
Frequency Range
12 to 385
MHz
Maximum Gain
+40
+51
+65
dB
VGC =2.5V, 85MHz
Minimum Gain
-65
-55
-40
dB
VGC =0.1V, 85MHz
Maximum Gain
+35
+45
+55
dB
VGC =2.5V, 385MHz
Minimum Gain
-68
-58
-48
dB
VGC =0.1V, 385MHz
Gain Slope
Gain Control Voltage Range
Gain Control Input Impedance
57
dB/V
Note 1
0 to 2.5
VDC
Source impedance of 4.7k:
30
Noise Figure
5
Input IP3
-46
Stability (Max VSWR)
10:1
k:
7.2
dB
-40
dBm
-2
dBm
At maximum gain and 85MHz
At +40dB gain, referenced to 500:
At minimum gain, referenced to 500:
Spurious<-70dBm
IF Input
Input Impedance
1
k:
CDMA, differential
Power Supply
Voltage
2.7 to 3.4
Current Consumption
V
6
10
15
mA
Minimum gain, VCC =3.0V
7
11.5
15
mA
Maximum gain, VCC =3.0V
Thermal
Thermal Resistance
150
°C/W
Maximum Junction Temperature
90
°C
Theta J-Ref 85°C
Ref 85°C
Note 1: Measured between a gain control voltage of 1.0V to 1.5V.
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7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS111021
RF2637
Pin
1
Function
IN+
2
3
INGND
4
GC
Description
Interface Schematic
CDMA balanced input pin. This pin is internally DC-biased and should be
DC-blocked if connected to a device with a DC level other than VCC present. A DC to connection to VCC is acceptable. For single-ended input operation, one pin is used as an input and the other CDMA input is AC-coupled to
ground. The balanced input impedance is 1k:, while the single-ended
input impedance is 500:.
BIAS
700 :
700 :
CDMA+
Same as pin 2, except complementary input.
CDMA-
See pin 1.
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Analog gain adjustment for all amplifiers. Valid control ranges are from 0V
to 2.5V. Maximum gain is selected with 2.5V. Minimum gain is selected
with 0V. These voltages are only valid for a 4.7k: DC source impedance.
V CC
2 3 .5 k :
1 2 .7 k :
15 k:
5
OUT-
6
7
OUT+
VCC2
8
VCC1
DS111021
Balanced output pin. This is an open-collector output, designed to operate
into a 250: balanced load. The load sets the operating impedance, but an
external choke or matching inductor to VCC must also be supplied in order
to correctly bias this output. This bias inductor is typically incorporated in
the matching network between the output and next stage. Because this pin
is biased to VCC, a DC-blocking capacitor must be used if the next stage’s
input has a DC path to ground.
Same as pin 5, except complementary output.
See pin 5.
Supply voltage pin. External bypassing is required. The trace length
between the pin and the bypass capacitors should be minimized. The
ground side of the bypass capacitors should connect immediately to
ground plane.
Same as pin 7.
See pin 7.
OUT+
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OUT-
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RF2637
Package Drawing
0.192
± 0.008
0.006
± 0.003
0.012
-A-
0.0256
0.118
± 0.004 sq
0.034
6° M AX
0° M IN
0.021
± 0.004
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0.006
± 0.002
Shaded lead is pin 1.
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support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS111021
RF2637
Application Schematic
C
D
M
A
I
F
M e a s u re m e n t
R e fe re n c e P la n e
F
i
l
t
e
r
Z S=5 00 :
Z
CDM A+
S, EFF= 3 3 3
R 1:
1 k:
CDM AZ
Z
IN , E F F = 5 0 0 :
IN = 1
:
1
8
2
7
k:
3
10 nF
V CC
Z LOAD= 5 0 0 :
C1
L1
C2
O U T+
6
R 2: 500:
G A IN
4 .7 k :
4
G A IN
CONTROL
C2
O U T-
5
C1
L1
Z L O A D ,E F F = 2 5 0 :
R 1 s e ts th e C D M A b a la n c e d in p u t im p e d a n c e . T h e e ffe c tiv e in p u t im p e d a n c e is th e n 5 0 0 : .
V CC
M e a s u re m e n t
R e fe re n c e P la n e
10 nF
Z O UT= 5 0 0 :
R 2 s e ts th e b a la n c e d o u tp u t im p e d a n c e to 5 0 0 : . L 1 a n d C 2 s e rv e d u a l p u rp o s e s . L 1 s e rv e s
a s a n o u tp u t b ia s c h o k e , a n d C 2 s e rv e s a s a s e rie s D C b lo c k . In a d d itio n , th e v a lu e s o f L 1 a n d
C 2 m a y b e c h o s e n to fo rm a n im p e d a n c e m a tc h in g n e tw o rk o f th e lo a d im p e d a n c e is n o t 5 0 0
: . O th e rw is e , th e v a lu e s o f L 1 a n d C 1 a re c h o s e n to fo rm a p a ra lle l-re s o n a n t ta n k c irc u it a t
th e IF w h e n th e lo a d im p e d a n c e is 5 0 0 : .
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
CDMA
50 :Pstrip
J1
SMA
C3
15 pF
L1
390 nH
C4
15 pF
C1
10 nF
L2
390 nH
C2
10 nF
C10
10 nF
T1
R1
1 k:
1
2
3
4
P1
P1-1
P1-3
DS111021
1
VCC
2
GND
3
GC
7
L4
390nH
C8
15 pF
OUT
T2
GC
R2
4.7 k:
VCC
8
C5
1 nF
6
GAIN
CONTROL
R3
510 :
50 :Pstrip
J2
SMA
5
L3
390nH
C9
15 pF
VCC
2627400A
C6
10 nF
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7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
C7
10 nF
5 of 9
RF2637
Evaluation Board Layout
Board Size 2.750" x 2.000"
Board Thickness 0.031”, Board Material FR-4
6 of 9
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support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS111021
RF2637
DS111021
www.BDTIC.com/RFMD
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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RF2637
Gain versus VGC Across Temperature,
60.0
VCC = 3.0V
0.0
40.0
-10.0
20.0
-20.0
Input IP3 (dBm)
Gain (dB)
Input IP3 versus VGC Across Temperature,
VCC = 3.0V, FO = 85MHz
0.0
-20.0
-30.0
-40.0
-40.0
-50.0
-40°C
25°C
85°C
-40°C
25°C
85°C
-60.0
-60.0
0.0
0.5
1.0
1.5
2.0
2.5
VGC (V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
VGC (V)
Noise Figure versus Frequency Across Temperature,
VCC = 3.0V, VGC = 2.5V
9.0
8.0
Noise Figure (dB)
7.0
6.0
5.0
4.0
3.0
2.0
-40°C
25°C
85°C
1.0
0.0
0.0
50.0
100.0
150.0
200.0
250.0
300.0
350.0
400.0
450.0
Frequency (MHz)
8 of 9
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support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS111021
RF2637
RoHS* Banned Material Content
RoHS Compliant:
Yes
Package total weight in grams (g):
0.025
Compliance Date Code:
N/A
Bill of Materials Revision:
-
Pb Free Category:
B i l l o f Ma te r i a l s
e3
Pa r ts Pe r Mi l l i o n (PPM)
Pb
Cd
Hg
Cr V I
PB B
PB DE
Di e
0
0
0
0
0
0
Mo l di ng Co mp o und
0
0
0
0
0
0
Le a d F r a me
0
0
0
0
0
0
Di e Atta ch Ep o x y
0
0
0
0
0
0
Wi r e
0
0
0
0
0
0
So l de r Pl a ti ng
0
0
0
0
0
0
Thi s R o HS b a nne d ma te r i a l co nte nt de cl a r a ti o n wa s p r e p a r e d so l e l y o n i nfo r ma ti o n, i ncl ud i ng a na l y ti ca l
da ta , p r o vi de d to R F MD b y i ts sup p l i e r s, a nd a pp l i e s to the B i l l o f Ma te r i a l s (B OM) r e vi si o n no te d
* DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on the restriction of the
use of certain hazardous substances in electrical and electronic equipment
DS111021
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7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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