ST CPL-WB-00C2 User Manual

Wide band directional coupler with ISO port

Features

■ 50 Ω nominal input / output impedance

■ Wide operating frequency range

(824 MHz to 2170 MHz)

■ Low Insertion Loss (< 0.2 dB)

■ 34 dB typical coupling factor

■ High directivity (typical 25 dB)

■ High ESD robustness

(IEC 61000-4-2 Level 4)

■ Flip-Chip package

■ Small footprint: 1700 x 1200 µm

CPL-WB-00C2

Figure 1. Pin configuration (top view)

Benefits

■ Very low profile (< 690 µm thickness)

■ Lead-free package

■ High RF performance

■ RF module size reduction

Applications

■ Quad band power amplifier module

■ Quad band front end module

■ GSM / WCDMA mobile phone

123

RF

GND

OUT

ATN. ATN.

ISO

GND

CPLD

RF

IN

A

B

Description

The CPL-WB-00C2 is a wide band directional
coupler designed to measure RF antenna output
power in GSM / WCDMA applications. This CPL
has been customized for wide band operating
frequencies (EGSM and CELL, PCS, DCS,
WCDMA Band I) with less than 0.2 dB insertion
losses in the transmit bandwidth (824 MHz to
2170 MHz).

The CPL-WB-00C2 has been designed using
STMicroelectronics IPD (integrated passive
device) technology on non conductive glass
substrate to optimize RF performance. The device
is delivered 100% tested in tape and reel.

January 2010 Doc ID 15088 Rev 3 1/8

www.st.com

8

Characteristics CPL-WB-00C2

1 Characteristics

Table 1. Absolute maximum rating (limiting values)

Symbol Parameter

IN

Input Power RF

IN

P

ESD ratings IEC 61000-4-2 (C = 150 pF, R = 330 Ω, 10 shots

V

ESD (IEC)

V

ESD (HBM)

V

ESD (MM)

V

ESD (CDM)

T

OP

Table 2. Electrical characteristics (T

with both polarities and each condition, cumulative method)
RF
RF

IN

IN

, RF
, RF

, air discharge

OUT

, contact discharge

OUT

Human body model, JESD22-A114-B, All I/O 2 kV

Machine model, JESD22-A115-A, All I/O 100 V

Charge device model, JESD22-C101-C, All I/O 500 V

Operating temperature -30 +85 ºC

= 25 °C) - impedances

amb

Symbol Parameter

Z

OUT

Z

Z

CPLD

Z

OUT

Table 3. Electrical characteristics (T

Nominal output impedance 50 Ω

Nominal input impedance 50 Ω

IN

Nominal coupling impedance 50 Ω

Nominal ISO impedance 50 Ω

= 25 °C) - RF performance

amb

Symbol Parameter Test condition

T

OP

I

R

CPLD

Operating temperature -30 +85 °C

Frequency range

f

(bandwidth)

Insertion loss in bandwidth From 824 MHz to 2170 MHz 0.1 0.2 dB

L

Return loss in bandwidth From 824 MHz to 2170 MHz 15 dB

L

Coupling factor (including
attenuator)

From 824 MHz to 915 MHz 35 39 dB

From 1710 MHz to 1980 MHz 28 33 dB

Value

Unit

Min. Typ. Max.

35 dBm

±15

±8

kV
kV

Value

Unit

Min. Typ. Max.

Value

Unit

Min. Typ. Max.

824 2170 MHz

(824 to 849 MHz) (880 to 915 MHz)
(1710 to 1785 MHz) (1850 to
1910 MHz)(1920 to 1980 MHz)

0.5 dB

Ripple

Coupling ripple in
individual band

DIR Coupler directivity From 824 MHz to 1980 MHz 20 25 dB

2/8 Doc ID 15088 Rev 3

CPL-WB-00C2 Characteristics

1.1 RF measurement (on reference evaluation board)

Measurements done on reference evaluation board under 50 Ω, de-embedding at
CPL-WB-00C2 bumps.

Figure 2. Insertion loss

dB

-0.0

-0.05

-0.1

-0.15

-0.2

-0.25

-0.3

Figure 3. Coupling and isolation

dB

-20

-25

-30

-35

-40

-45

-50

-55

-60

-65

-70

F (MHz)

20351901176616321497136212281093959824

F (MHz)

20351901176616321497136212281093959824

2170

2170

Figure 4. Directivity

40

38

36

34

32

30

28

26

24

22

20

F (MHz)

2170

20351901176616321497136212281093959824

Doc ID 15088 Rev 3 3/8