Datasheet RF2607, RF2607PCBA Datasheet (RF Micro Devices)

ü

10-1

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

FM+

FM-

GND

IN SELECT

NC

GC

VCC

VCC

VCC

GND

GND

OUT+

OUT-

GAIN

CONTROL

IN

SEL.

RF2607

CDMA/FM RECEIVE AGC AMPLIFIER

• CDMA/FM Cellular S ystems

• Supports Dual-Mode AMPS/CDMA

• Supports Dual-Mode TACS/CDMA

• General Purpose Linear IF Amplifier

• Commercial and Consumer Systems

• Portable Batter y-Powered Equipment

The RF2607 is a complete AGC amplifier designed for
the receive section of dual-mode CDMA/FM cellular
applications.It is designed to amplify IF signals while pro­viding more than 90 dB of gain control range. Noise Fig­ure, IP

3

, 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
the RFMD CDMA chipset, consisting of a Transmit IF
AGC Amp, a Transmit Upconverter, a Receive LNA/Mixer,
and this 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 +48dB Gain Control Range

• IS95 CDMA Compatible

• Digitally Selectable Inputs

• -2dBm Input IP

3

• 12MHz to 285MHz Operation

RF2607 CDMA/FM Receive AGC Amplifier
RF2607 PCBA Fully Assembled Evaluation Board

10

Rev B2 010720

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

Package Style: SSOP-16

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RF2607

Rev B2 010720

10

IF AMPLIERS

Absolute M aximum Ratings

Parameter Value Unit

Supply Voltage -0.5 to +7.0 V

DC

Control Voltage -0.5 to +5.0 V

DC

Input RF Power +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, 85MHz, VCC=3.6V,ZS=500Ω,
Z

L

=500Ω,500Ω External CDMA Input Ter-

minating Resistor, 500Ω External Output
Terminating Resistor (Effective Z

S

=333Ω,

Effective Z

L

=250Ω)

(See application schematic)
Frequency Range 12 to 285 MHz
CDMA Maximum Gain +45 +48 dB V

GC

=2.9V

CDMA Minimum Gain -48 -45 dB V

GC

=0.2V

FM Maxi mum Gain +45 +49 dB V

GC

=2.9V

FM 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

Source impedance of 4.7kΩ
Gain Control Input Impedance 30 kΩ

Noise Figure 5 dB At ma ximum gain and 85MHz
Input IP

3

-44 -40 dBm At +40dB gain, referenced to 500Ω

-2 dBm At minimum gain, referenced to 500Ω

Stability (Max VSWR) 10:1 Spurious< - 70dBm

IF Input

Input Impedance 1 kΩ CDMA, differe ntial
Input Impedance 850 Ω FM, single-ended
CDMA to FM Isolation 30 dB

Power Supply

Voltage 3.3 to 3.6 V
Current Consumption 13 mA Minimum gain
Current Consumption 14 17 mA Maximum gain

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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RF2607

Rev B2 010720

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 connected to a device wi th a DC level other than V

CC

present. A DC to connection to VCCis 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 1kΩ,while
the single-ended input impedance is 500Ω.

2 CDMA-

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

3GND

Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.

4FM+

FM balanced input pin. This pin is internally DC-biased and should be
DC blocked if connected to a device with DC present. For single-ended
input operation, one pin is used as an input and the other FM input is
AC-coupled to ground. The balanced input impedance is 1.7kΩ,while
the single-ended input impedance is 850Ω.

5FM-

Same as pin 4, except complementary input. See pin 4.

6GND

Same as pin 3.

7 IN SELECT

Selects which IF input (CDMA or FM) is used. This is a digitally con­trolled input. A logic "high" selects the CDMA input amplifier. A logic
"low" selects the FM input amplifier. The threshold voltage is approxi­mately 1.3V.

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 250Ω 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.

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.

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 only valid for a 4.7kΩ DC source
impedance.

700

Ω

BIAS

700

Ω

CDMA-CDMA+

650

Ω

BIAS

650

Ω

FM-FM+

20 k

Ω

IN SELECT

OUT-OUT+

23.5 k

Ω

15 k

Ω

12.7 k

Ω

V

CC

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RF2607

Rev B2 010720

10

IF AMPLIERS

Applicatio n Schematic

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9NC

GAIN

CONTROL

IN

SEL.

10 nF

R1:

1kΩ

CDMA-

FM IN

CDMA+

IF IN

SELECT

4.7 kΩ
GC

10 nF

L1

L1

V

CC

C2

OUT+

OUT-

V

CC

R2:

500Ω

C1

C1

C2

Measurement

Reference Plane

Z

LOAD

=500Ω

FM IF Filter

CDMA IF Filter

ZS=500 Ω

Z

IN, EFF

=500 Ω

Z

IN

=1 kΩ

Z

S

=850 Ω

Z

S, EFF

=333 Ω

Z

IN

=850 Ω

Measurement

Reference Plane

Z

LOAD,EFF

=250 Ω

Z

OUT

=500 Ω

R1 sets the CDMA balanced input impedance. The effective input impedance is then 500 Ω.
R2 sets the balanced output impedance to 500 Ω. L1 and C2 serve dual purposes. L1

serves as an ou tput 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 of the load
impedance is not 500 Ω. Otherwise,the values of L1 and C1 are chosen to form a parallel­resonant tank circuit at the IF when the load impedance is 500 Ω.

10 nF

10 nF

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RF2607

Rev B2 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

IN

SEL.

C7

10 nF

P2-1

C8

10 nF

R1

1kΩ

C1

10 nF

C2

10 nF

C3

15 pF

C4

15 pF

T1

50 Ω µstrip

J1

CDMA

C5

10 nF

L3

330 nH

C6

10 pF

50 Ω µstrip

J2

FM

C14

10 nF

C13

10 nF

P1-1

P1-3

R2

500 Ω

L4

390 nHL5390 nH

P1-3

C12

15 pF

C11

15 pF

T2

50 Ω µstrip

J3

OUT

L1

390 nH

L2

390 nH

2607400A

NC

GND

SELECT

P2-1

P2

1
2
3

P1-1 GC

GND

P1-3 VCC

P1

1
2
3

C9

10 nF

C10

10 nF

R3

4.7 kΩ

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RF2607

Rev B2 010720

10

IF AMPLIERS

Evaluation Board Layout

10-7

RF2607

Rev B2 010720

10

IF AMPLIERS

CDMA Gain versus Gain Control Voltage

(VCC=3.6 V, 85 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

0.00.51.01.52.02.53.0

GC (volts)

Gain (dB)

+25°C

-30°C
+80°C

CDMA IIP3 versus Gain

(VCC=3.6 V, 85 MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dBm)

CDMA Noise Figure versus Gain

(VCC=3.6 V, 85 MHz)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

Noise Figure (dB)

FM Gain versus Gain Control Voltage

(VCC=3.6 V, 85 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

0.00.51.01.52.02.53.0

GC (volts)

Gain (dB)

+25°C

FM IIP3 versus Gain

(VCC=3.6 V, 85 MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dBm)

FM Noise Figure versus Gain

(VCC=3.6 V, 85 MHz)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

Noise Figure (dB)

10-8

RF2607

Rev B2 010720

10

IF AMPLIERS

CDMA Gain versus Gain Control Voltage

(VCC=3.6V, 85 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

0.00.51.01.52.02.53.0

GC (volts)

Gain (dB)

-30 C
+25 C
+80 C

CDMA IIP3 versus Gain

(VCC=3.3 V, 85 MHz)

-60.0

-50.0

-40.0

-30.0

-20.0

-10.0

0.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Gain (dB)

IIP3 (dB)

-30 C
+25 C
+80 C

CDMAOIP3versusGain

(VCC=3.3 V, 85 MHz)

-60.0

-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)

OIP3 (dB)

-30 C
+25 C
+80 C