Datasheet RF2609, RF2609PCBA Datasheet (RF Micro Devices)

!

NOT FOR NEW DESIGNS

10-9

10

IF AMPLIERS

Product Description

Ordering Information

Typical Applications

Features

Functional Block Diagram

RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA

Tel [phone]

Fax [phone]

http://www.rfmd.com

Optimum Technology Matching® Applied

Si BJT GaAs MESFETGaAs HBT
Si Bi-CMOS

SiGe HBT

Si CMOS

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ts RF2

6

19 &

RF2

6

29

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

CDMA+

CDMA-

GND

GND

GND

GND

GND

NC

GC

VCC

VCC

VCC

GND

GND

OUT+

OUT-

GAIN

CONTROL

.244
.228

.050
.016

8°MAX

0°MIN

.010
.008

.157
.150

.025

.196
.189

1

.012
.008

.009

.069
.053

.010
.004

RF2609

CDMA/FM TRANSMIT AGC AMPLIFIER

• CDMA/FM Cellular Systems

• Supports Dual-Mode AMPS/CDMA

• Supports Dual-Mode TACS/CDMA

• General Purpose Linear IF Amplifier

• Portable Battery Powered Equipment

• Commercial and Consumer Systems

The RF2609 is a complete AGC amplifier designed for
the transmit section of dual-mode CDMA/FM cellular
applications . It is designed to amplify IF si gnals while pro­viding more than 84dB of gain control range. Noise Fig­ure, IP3, and other specifications are designed to be
compatible with t he IS - 95 In terim Sta ndar d for CDMA cel­lular communications. This circuit is designed as part of
the RFMD CDMA Chip Set, consisting of this Transmit IF
AGC Amp, a Transmit Upconverter, a Receive LNA/Mixer,
and a Receive IF AGC Amp. The IC is manufactur ed on
an advanced high frequency Silicon Bipolar process and
is packaged i n a s tandar d min iatur e 16- lead p lasti c SS OP
package.

• Supports Dual Mod e Op era ti on

• -48dB to +42dB Gain Control Range

• IS-95 CDMA Compatible

• Monolithic Construction

• 12MHz to 175MHz Operation

• Miniature Surface Mount Package

RF2609 CDMA/FM Transmit AGC Amplifier
RF2609 PCBA Fully Assembled Evaluation Board

10

Rev B3 000822

Package Style: SSOP-16

10-10

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

Absolute Maximum Ratings

Parameter Rating Unit

Supply Voltage -0.5 to +7.0 V

DC

Control Voltage -0.5 to +5.0 V
Input Power Levels +10 dBm
Operating Ambient Temperature -40 to +85 °C
Storage Temperature -40 to +150 °C

Parameter

Specification

Unit Condition

Min. Typ. Max.

Overall

T= 25°C, 130MHz, VCC=3.6V, ZS=1kΩ,
Z

L

=1kΩ, 1kΩ Exte rnal Output Terminating

Resistor (Effective Z

L

=500Ω) (See Applica-

tion Example)
Frequency Range 12 to 175 MHz
Maximum Gain +39 +42 dB V

GC

=2.76V

Minimum Gain -48 -45 dB V

GC

=0.2V

Gain Slope 47 dB/V Measured in 0.5V increments
Gain Control Voltage Range 0 to 3 V

DC

Gain Control Input Impedance 30 kΩ
Noise Figure 10 dB At maximum gain and 130MHz
Input IP3 -26 -25 dBm At +10 gain and referenced to 1kΩ
Input Impedance 1 kΩ Differential
Stability (Max VSWR) 10:1 Spurious<-70dBm

Power Supply

Voltage 3.3 to 3.6 V
Current Consumption 23 25 mA Maximum gain
Current Consumption 22 mA Minimum gain

Caution! ESD sensitive device.

RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).

10-11

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

Pin Function Description Interface Schematic

1 CDMA+

CDMA Balanced Input Pin. This pi n is internally DC biased and should
be DC blocked if connected to a device with a DC level, other than V

CC

,

present. A DC to connection to V

CC

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 inpu t impedance is 1kΩ, while
the single-ended input impedance is 500Ω.

2 CDMA-

Same as pin 2, except complementary input. See pin 1 schematic.

3GND

Ground connection. Keep traces physically short and connect immedi­ately to ground plane for best performance.

4GND

Same as pin 3.

5GND

Same as pin 3.

6GND

Same as pin 3.

7GND

Same as pin 3.

8NC

No Connection pin. This pin is internally biased and should not be con­nected to any external circuitr y, including ground or V

CC

.

9OUT-

Balanced Output pin. This is an open-collector output, designed to
operate into a 500Ω balanced load. The load sets the operating imped­ance, but an external choke or matching inductor to V

CC

must also be

supplied in order to correctly bias this output. This bias inductor i s typi­cally incorporated in the matching network between the output and next
stage. Because this pin is biased to V

CC

, a DC blocking capacitor must

be used if the next stage’s input has a DC path to ground.

10 OUT+

Same as pin 9, except complementary output. See pin 9 schematic.

11 GND

Same as pin 3.

12 GND

Same as pin 3.

13 VCC

Supply Voltage pin. External bypassing is required. The trace length
between the pin and the bypass capaci tors should be minimized. The
ground side of the bypass capacitors should connect immediately to
ground plane. Pins 13, 14, and 15 may share one bypass capacitor if
trace lengths are kept minimal.

14 VCC

Same as pin 13.

15 VCC

Same as pin 13.

16 GC

Analog gain adjustment for all amplifiers. Valid control ranges are from
0V to 3.0V. Maximum gain is selected with 3.0V. Minimum gain is
selected with 0V. These voltages are valid only for a 3.3kΩ DC source
impedance.

580

Ω

V

CC

580

Ω

CDMA-CDMA+

OUT-OUT+

23.5 k

Ω

15 k

Ω

12.7 k

Ω

V

CC

10-12

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

Applicatio n Schematic

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

10 nF

10 nF

R2:

1 k

Ω

C2

C2

L1C1

L1C1

V

CC

10 nF

V

CC

CDMA Filter

OUT+

OUT-

IN+

IN-

Measurement

Reference Plane

Z

IN

=1 k

Ω

ZS=1 k

Ω

Z

OUT

=1 k

Ω

Z

LOAD

=1 k

Ω

R2 sets the balanced output impedance to 1 kΩ. L1 and C2
serve dual purposes. L1 serves as an output bias choke,
and C2 serves as a series DC block. In addition, the values
of L1 and C2 may be chosen to form an impedance
matching network if the load impedance is not 1k

Ω

.
Otherwise, the values of L1 and C1 are chosen to form a
parallel-resonant tank circuit at the IF when the IF filter's
input impedance is 1 k

Ω.

Z

LOAD,EFF

=500

Ω

Measurement

Reference Plane

10 nF

10 nF

3.3 k

Ω

GAIN

GAIN

CONTROL

10-13

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

Evaluation Board Schematic

(Download Bill of Materials from www.rfmd.com.)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

GAIN

CONTROL

T1

C1

5.1 pF

C3

0.01

µ

F

C2

5.1 pF

C4

0.01

µ

F

50

Ω µ

strip

SMA

J1

L2

270 nH

L1

270 nH

R1

3.3 k

Ω

C12

0.01

µ

F

P1-3

P1-1

C10

0.01

µ

F

C11

0.01

µ

F

L4

100 nH

C9

20 pF

C8

36 pF

T2

WB3040

R2

1k

Ω

C5

36 pF

L3

100 nH

C6

0.01

µ

F

P1-1

C7

20 pF

50

Ω µ

strip

SMA

J2

2609400A

CDMA

OUT

1
2
3

P1-1

P1-3

VCC
GND

P1

GC

10-14

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

Evaluation Board Layout

10-15

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

RF2609 IIP3 vs. Gain
(Vcc=3.6 V, 130 MHz)

-50

-40

-30

-20

-10

0

10

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C

+25 C

+80 C

RF2609 Gain vs. Gain Control Voltage

(Vcc=3.6 V, 130 MHz)

-60

-50

-40

-30

-20

-10

0

10

20

30

40

50

60

0.0 0.5 1.0 1.5 2.0 2.5 3.0

GC (volts)

Gain (dB)

+25°C

-30°C

+80°C

RF2609 Noise Figure vs. Gain

(Vcc=3.6 V, 130 MHz)

0

10

20

30

40

50

60

70

80

-60 -40 -20 0 20 40 60

Gain (dB)

Noise Figure (dB)

RF2609 OIP3 vs. Gain

(Vcc=3.6 V, 130 MHz)

-70

-60

-50

-40

-30

-20

-10

0

10

20

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

OIP3 (dB)

-30 C

+25 C

+85 C

RF2609 Gain vs. Gain Control Voltage

(Vcc= 3 . 3 V , 130 MHz)

-60

-50

-40

-30

-20

-10

0

10

20

30

40

50

60

0.0 0.5 1.0 1.5 2.0 2.5 3.0

GC (volts)

Gain (dB)

-30 C

+25 C

+85 C

RF2609 OIP3 vs. Gain

(Vcc=3.3 V, 130 MHz)

-70

-60

-50

-40

-30

-20

-10

0

10

20

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

OIP3 (dB)

-30 C

+25 C

85 C

10-16

RF2609

Rev B3 000822

10

IF AMPLIERS

NOT FOR NEW DESIGNS

See Upgraded Products RF2619 & RF2629

RF2609 IIP3 vs. Gain
(Vcc=3.3 V, 130 MHz)

-50

-40

-30

-20

-10

0

10

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C

+25 C

+85 C