Datasheet RF2619, RF2619PCBA Datasheet (RF Micro Devices)

ü

10-25

10

IF AMPLIERS

Product Description

Ordering Information

Typical Applications

Features

Functional Block Diagram

RF Micro Devices, Inc.
7628 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

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

0.157

0.150

0.025

0.012

0.008

0.196

0.189

0.2440

0.2284

0.0688

0.0532

0.050

0.016

0.0098

0.0075

8° MAX

0°MIN

NOTES:

1. Shaded lead is Pin 1.

2. All dimensionsare excluding mold flash.

3. Lead coplanarity - 0.005 with respect to datum "A".

-A-

0.0098

0.0040

RF2619

3V CDMA/FM TRANSMIT AGC AMPLIFIER

• 3V 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 RF2619 is a complete AGC amplifier designed for
the transmit section of 3V dual-mode CDMA/FM cellular
applications.It is designed to amplify IF signals while pro­viding more than 84dB of gain control range. Noise Fig­ure, IP3, and other specifications are designed to be
compatible with the IS-95 Interim Standard for CDMA cel­lular communications. This circuit is designed as part of
theRFMDCDMAChipSet,consistingofthisTransmitIF
AGC Amp, a Transmit Upconverter, a Receive LNA/Mixer,
and a Receive IF AGC Amp. The IC is manufactured on
an advanced high frequency Silicon Bipolar process and
is packaged in a standard miniature 16-lead plastic SSOP
package.

• Supports Dual Mode Operation

• -48dB to +42dB Gain Control Range

• Single 3V Power Supply

• Monolithic Construction

• 12MHz to 175MHz Operation

• Miniature Surface Mount Package

RF2619 3V CDMA/FM Transmit AGC Amplifier
RF2619 PCBA Fully Assembled Evaluation Board

10

Rev B5 010720

Package Style: SSOP-16

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IF AMPLIERS

Absolute M aximum 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=3.0V,Pin=­40dBm, Z

S

=1kΩ,ZL=1kΩ,1kΩ External

Output Terminating Resistor (Effective
Z

L

=500Ω) (See Application Example)

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

GC

=2.4V

Minimum Gain -48 -45 dB V

GC

=0.3V

Gain Slope 57 dB/V Measured in 0.5V increments
Gain Control Voltage Range 0 to 3 V

DC

Gain Control Input Impedance 30 kΩ
Noise Figure 10.5 13 dB At maximum gain and 130MHz
Input IP 3 -26 -25 dBm At +10 gain and referenced to 1kΩ,

Pin=-45dBmper tone
Input Impedance 1 kΩ Differential
Stability (Max VSWR) 10:1 Spurious< - 70dBm

Power Supply

Voltage 2.7 to 3.3 V
Current Consumption 23 25 mA Maximum gain, V

CC

=3.0V

Current Consumption 22 24 mA Minimum gain, V

CC

=3.0V

Caution! ESD sensitive device.

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

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RF2619

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10

IF AMPLIERS

Pin Function Description Interface Schematic

1 CDMA+

CDMA balanced input pin. This pin is internally DC-biased and should
be DC-blocked if connectedto a device w ith a DC level, other than V

CC

,

present. A DC to connection to V

CC

is ac ceptable. 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 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. For best performance, keep traces physically short
and connect immediately to ground plane.

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 circuitry, including ground or V

CC

.

9OUT-

Balanced output pin. This is an open-coll ector output, designed to
operate int o a 500Ω balanced load. The load sets the operating imped­ance, but an external choke or m atching inductor to V

CC

must also be

supplied in order to correctly bias this output. This bias inductor is typi­cally incorp o rated in the matchingnetworkb e tween 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 capacitors 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
selectedwith 0V. These voltagesare 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

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RF2619

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10

IF AMPLIERS

Applicatio n Schematic

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

10 nF

10 nF

R2:

1k

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

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RF2619

Rev B5 010720

10

IF AMPLIERS

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 µF

C2

5.1 pF

C4

0.01 µF

50 Ω µstrip

J1

SMA

L2

270 nH

L1

270 nH

R1

3.3 kΩ

C12

0.01 µF

P1-3

P1-1

C10

0.01 µF

C11

0.01 µF

L4

100 nH

C9

20 pF

C8

36 pF

T2

WB3040

R2

1kΩ

C5

36 pF

L3

100 nH

C6

0.01 µF
P1-1

C7

20 pF

50 Ω µstrip

J2

SMA

2619400A

CDMA

OUT

GND

P1-1 VCC

P1-3 GC

1
2
3

P1

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RF2619

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10

IF AMPLIERS

Evaluation Board Layout

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RF2619

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IF AMPLIERS

Gain versus Gain Control Voltage

(VCC=2.7V,130MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

30.0

40.0

50.0

60.0

0.0 0.5 1.0 1.5 2.0 2.5

GC (V)

Gain (dB)

-30 C
+25 C
+80 C

RF2619Gain versus Gain Control Voltage

(VCC=3.0V, 130 MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

30.0

40.0

50.0

60.0

0.0 0.5 1.0 1.5 2.0 2.5

GC (volts)

Gain (dB)

-30 C
+25 C
+80 C

Gain versus Gain Control Voltage

(VCC=3.3V, 130 MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

30.0

40.0

50.0

60.0

0.0 0.5 1.0 1.5 2.0 2.5

GC (V)

Gain (dB)

-30 C
+25 C
+80 C

IIP3 versus Gain

(VCC=2.7V, 130 MHz)

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C
+25 C
+80 C

IIP3 versus Gain

(VCC=3.0V, 130 MHz)

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C
+25 C
+80 C

IIP3 versus Gain

(VCC=3.3V, 130 MHz)

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C
+25 C
+80 C

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RF2619

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10

IF AMPLIERS

OIP3 versus Gain

(VCC=2.7 V, 130 MHz)

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

OIP3 (dB)

-30 C
+25 C
+80 C

OIP3 versus Gain

(VCC=3.0V, 130 MHz)

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

NF (dB)

-30 C
+25 C
+80 C

OIP3 versus Gain

(VCC=3.3V, 130 MHz)

-70.0

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

10.0

20.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

OIP3 (dB)

-30 C
+25 C
+80 C

NoiseFigureversusGain

(VCC=2.7V, 130 MHz)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

NF (dB)

-30 C
+25 C
+80 C

Noise Figure versus Gain

(VCC=3.0V, 130 MHz)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

NF (dB)

-30 C
+25 C
+80 C

NoiseFigureversusGain

(VCC=3.3V, 130 MHz)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

NF (dB)

-30 C
+25 C
+80 C