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Skyworks Solutions, Inc., Proprietary Information

101782A

781] 376-7000 · FAX [781] 376-3100 · SALES@SKYWORKSINC.COM · WWW.SKYWORKSINC.COM

JULY 3, 2003

DATA SHEET

CX77107: PA Module for CDMA / PCS (18501910 MHz)

APPLICATIONS

Personal Communications Services
(PCS)

Wireless local loop (WLL)

DISTINGUISHING FEATU

DISTINGUISHING FEATURES

RES

Low voltage positive bias supply
(3.2 V to 4.2 V)

Good linearity

High efficiency

Large dynamic range

10-pin package
4 mm x 4 mm x 1.5 mm

Power down control

Low power-state control

InGaP

IS95/CDMA2000

Full U.S. PCS coverage

The CX77107 Power Amplifier Module (PAM) is a fully matched 10-pin surface mount
module developed for Personal Communications Service (PCS) and Wireless Local Loop
(WLL) applications. This small and efficient Power Amplifier packs full 18501910 MHz
bandwidth coverage into a single compact package. The CX77107 meets the stringent
spectral linearity requirements of Code Division Multiple Access (CDMA) PCS transmission,
with high power added efficiency for power output of up to 28 dBm. A low current (VCONT)
pin is provided to improve efficiency for the low RF power range of operation.

The single Gallium Arsenide (GaAs) Microwave Monolithic Integrated Circuit (MMIC) contains
all active circuitry in the module. The MMIC contains on-board bias circuitry, as well as
input and interstage matching circuits. The output match is realized off-chip within the
module package to optimize efficiency and power performance into a 50 W load. This
device is manufactured with Skyworks' GaAs Heterojunction Bipolar Transistor (HBT)
process that provides for all positive voltage DC supply operation while maintaining high
efficiency and good linearity. Primary bias to the CX77107 is supplied directly from a three-
cell nickel cadmium, a single-cell lithium ion, or other suitable battery with an output in the
3 to 4 volt range. Power down is accomplished by setting the voltage on the low current
reference pin to zero volts. No external supply side switch is needed as typical "off" leakage
is a few microamperes with full primary voltage supplied from the battery.

MMIC

MODULE

(8) RF OUT

VCC1

VCC2

VREF

(5)

(1)

(10)

(3, 6, 7, 9)

GND

VCONT

(4)

(3, 6, 7, 9)

GND

RF IN (2)

Driver

Stage Bias

Power

Stage Bias

Input

Match

Inter

Stage

Match

Output

Match

101782_001

Figure

Figure 1

1. Functional Block Diagram

. Functional Block Diagram

Data Sheet · CX77107

PA Module for CDMA / PCS (18501910 MHz)

Skyworks Solutions, Inc., Proprietary Information

JULY 3, 2003

781] 376-7000 · FAX [781] 376-3100 · SALES@SKYWORKSINC.COM · WWW.SKYWORKSINC.COM

101782A

Electrical Specifications

The following tables list the electrical characteristics of the
CX77107 Power Amplifier.

Table 1

lists the absolute maximum

ratings, while

Table 2

shows the recommended operating

conditions to achieve the performance characteristics listed in

Table 4

Table 3

presents a truth table for the power ranges.

Table

Table 1

1. Absolute Maximum Ratings

. Absolute Maximum Ratings

(1)

Parameter

Parameter Symbol

Symbol

Symbol Minimum

Minimum

Minimum Nominal

Nominal

Nominal Maximum

Maximum

Maximum Unit

Unit

RF Input Power

0.0

7.0

dBm

Supply Voltage

3.4

6.0

Volts

Reference Voltage

REF

3.0

3.1

Volts

Case Operating Temperature

+110

°C

Storage Temperature

STG

+125

°C

(1)

No damage assuming only one parameter is set at limit at a time with all other parameters set at or below nominal value.

Table

Table 2

2. Recommended Operating Conditi

. Recommended Operating Conditi

. Recommended Operating Conditions

ons

Parameter

Parameter Symbol

Symbol

Symbol Minimum

Minimum

Minimum Nominal

Nominal

Nominal Maximum

Maximum

Maximum Unit

Unit

Supply Voltage

3.2

3.4

4.2

Volts

Reference Voltage

REF

2.95

3.0

3.05

Volts

Low Mode

CONT

2.5 -- 3.0

Volts

Control voltage

High Mode

CONT

0.0 -- 0.5

Volts

Operating Frequency

1850.0

1880.0

1910.0

MHz

Case Operating Temperature

+25

+85

°C

Table

Table 3

3. Power Range Truth Table

. Power Range Truth Table

Power Mode

V
V

REF

V
V

CONT

Range

High Power

3.0 V

0.0 V0.5 V

16 dBm28 dBm

Low Power

3.0 V

2.5 V3.0 V

16 dBm

Shut Down

0.0 V

PA Module for CDMA / PCS (18501910 MHz)

Data Sheet · CX77107

Skyworks Solutions, Inc., Proprietary Information

101782A

781] 376-7000 · FAX [781] 376-3100 · SALES@SKYWORKSINC.COM · WWW.SKYWORKSINC.COM

JULY 3, 2003

Table

ble

ble 4

4. Electrical Specifications for CDMA Nominal Operating Conditions

. Electrical Specifications for CDMA Nominal Operating Conditions

(1)

Characteristics

Characteristics Symbol

Symbol

Symbol Condition

Condition

Condition Min.

Min.

Min. Typical

Typical

Typical Max.

Max.

Max. Unit

Unit

LOW

CONT

2.5 V

= 16 dBm

22.0 24.0 26.5

Gain conditions

Digital Mode

HIGH

CONT

0.5 V

= 28 dBm

26.5 28.0 30.0

PAE

LOW

CONT

2.5 V

= 16 dBm

7.5 9.0 --

Power Added Efficiency

Digital Mode

PAE

HIGH

CONT

0.5 V

= 28 dBm

37.0 39.0 --

CC_LOW

= 16 dBm

125

150

Total Supply current

CC_HIGH

= 28 dBm

475

500

Q_LOW

CONT

2.5 V

-- 50 --

Quiescent current

Q_HIGH

CONT

0.5 V

-- 90 --

Reference Current

REF

6.0

Control Current

CTRL

CONT

= 2.5 V

140

Total Supply current in Power-down Mode

= 3.4V

REF

= 0 V

-- 3.0 5.0 mA

ACP1

LOW

CONT

2.5 V

16 dBm

-- 48.0 45.0

1.25 MHz offset

ACP1

HIGH

CONT

0.5 V

28 dBm

-- 50.0 48.0

ACP3

LOW

CONT

2.5 V

16 dBm

-- 73.0 58.0

Adjacent Channel Power

(2) (3)

2.25 MHz offset

ACP3

HIGH

CONT

0.5 V

28 dBm

-- 58.5 56.5

dBc

Second F

28 dBm

-- 40.0 35.0

Harmonic Suppression

Third F

28 dBm

-- 55.0 40.0

dBc

Noise Power in RX Band 1930-1990 MHz

RxBN

28 dBm

-- 138.0 137.0

dBm/Hz

Noise Figure

4.0

5.0

Input Voltage Standing Wave Ratio (VSWR)

VSWR

2.0:1

Stability (Spurious output)

5:1 VSWR All phases

70.0

dBc

Ruggedness No damage

(4)

28 dBm

10:1 -- -- VSWR

(1)

= +3.4 V, V

REF

= +3.0 V, Freq = 1880 MHz, T

= 25 °C, unless otherwise specified

(2)

ACP is specified per IS95 as the ratio of the total in-band power (1.23 MHz BW) to adjacent power in a 30 kHz BW.

(3)

CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = 3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB. For CDMA2000, 0.5 dB

back-off in output power is required.

(4)

All phases, time = 10 seconds.

Data Sheet · CX77107

PA Module for CDMA / PCS (18501910 MHz)

Skyworks Solutions, Inc., Proprietary Information

JULY 3, 2003

781] 376-7000 · FAX [781] 376-3100 · SALES@SKYWORKSINC.COM · WWW.SKYWORKSINC.COM

101782A

Table

Table 5

5. Electrical Specifications for CDMA Recommended Operating Conditions

. Electrical Specifications for CDMA Recommended Operating Conditions

(1)

Characteristics

Characteristics Symbol

Symbol

Symbol Condition

Condition

Condition Minimum

Minimum

Minimum Maximum

Maximum

Maximum Unit

Unit

LOW

CONT

2.5 V

= 16 dBm

21.0 29.5

Gain conditions

Digital Mode

HIGH

CONT

0.5 V

= 28 dBm

24.5 33.0

ACP1

LOW

CONT

2.5 V

16 dBm

-- 44

1.25 MHz offset

ACP1

HIGH

CONT

0.5 V

28 dBm

-- 44

ACP3

LOW

CONT

2.5 V

16 dBm

-- 56

Adjacent Channel Power

(2) (3) (4)

2.25 MHz offset

ACP3

HIGH

CONT

0.5 V

28 dBm

-- 56

dBc

Second F

28 dBm

-- 30

Harmonic Suppression

Third F

28 dBm

-- 40

dBc

Noise Power in RX Band 1840-1895 MHz

RxBN

28 dBm

-- 136.0

dBm/Hz

Noise Figure

7.0

Input Voltage Standing Wave Ratio (VSWR)

VSWR

2.5:1

Stability (Spurious output)

5:1 VSWR
All phases

-- 70.0

dBc

Ruggedness No damage

(5)

28 dBm

10:1 --

VSWR

(1)

Per Table 2, unless otherwise specified.

(2)

ACP is specified per IS95 as the ratio of the total in-band power (1.23 MHz BW) to adjacent power in a 30 kHz BW.

(3)

CDMA2000 is configured as DCCH = 9600, SCHO = 9600, PCH (Walsh 0) = 3.75 dB, and Peak-to-Average Ratio (CCDF = 1%) = 4.5 dB. For CDMA2000, 0.5 dB

back-off in output power is required.

(4)

Worst case ACPR is 43dBc at +85 °C, V

= 3.2 V.

(5)

All phases, time = 10 seconds.

PA Module for CDMA / PCS (18501910 MHz)

Data Sheet · CX77107

Skyworks Solutions, Inc., Proprietary Information

101782A

781] 376-7000 · FAX [781] 376-3100 · SALES@SKYWORKSINC.COM · WWW.SKYWORKSINC.COM

JULY 3, 2003

Characterization Data

The graphs from

Figure 2

through

Figure 10

illustrate the

characteristics of a typical CX77107 power amplifier designed for
operation in the PCS frequency band (18501910 MHz). This
amplifier was selected by characterizing a group of devices and
choosing a part with average electrical performance for both
nominal and the full range of recommended operating conditions,
including worst case limits.

The graphs illustrate the digital signal characteristics of the
CX77107. Shown are power sweep characteristics for key
performance parameters over temperature and frequency, up to
28.5 dBm output power. The data was taken up to and including
16 dBm output power with the bias mode control pin setting of
V

CONT

= 2.5 volts. Beyond 16 dBm output power, the V

CONT

was set

to 0 volts.

Output Power (dBm)

Gain (dB)

REF

= 3.0 V V

= 3.4 V

30 °C

28.5 dBm

+25 °C

+85 °C

CONT

> 2.5 V V

CONT

< 0.5 V

101782_010

Figure

Figure 2

2. Digital Mode Gain vs. Output Power

. Digital Mode Gain vs. Output Power

1880 @ +25 °C

1850 @ 30 °C

1850 @ +25 °C

1850 @ +85 °C

1880 @ 30 °C

1880 @ +85 °C

1910 @ 30 °C

1910 @ +25 °C

1910 @ +85 °C

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