ST CPL-WB-01C2 User Manual
Wide band directional coupler with ISO port
Features
■ 50 Ω nominal input / output impedance
■ Wide operating frequency range
(824 MHz to 2025 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-01C2
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 / TD-SCDMA mobile phone
123
RF
GND
OUT
ATN. ATN.
ISO
GND
CPLD
RF
IN
A
B
Description
The CPL-WB-01C2 is a wide band directional
coupler designed to measure RF antenna output
power in GSM / TD-SCDMA applications. This
CPL has been customized for wide band
operating frequencies (EGSM and CELL, PCS,
DCS, TD-SCDMA) with less than 0.2 dB insertion
losses in the transmit bandwidth (824 MHz to
2025 MHz).
The CPL-WB-01C2 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 15366 Rev 3 1/8
www.st.com
8
Characteristics CPL-WB-01C2
1 Characteristics
Table 1. Absolute maximum rating (limiting values)
Value
Symbol Parameter
Min. Typ. Max.
IN
Input Power RF
IN
P
35 dBm
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 - impedances (T
with both polarities and each condition, cumulative method)
RF
RF
IN
IN
, RF
, RF
, air discharge
OUT
, contact discharge
OUT
±15
±8
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
amb
= 25 °C)
Value
Symbol Parameter
Min. Typ. Max.
Z
OUT
Z
Z
CPLD
Z
OUT
Table 3. Electrical characteristics - RF performance (T
Nominal output impedance 50 Ω
Nominal input impedance 50 Ω
IN
Nominal coupling impedance 50 Ω
Nominal ISO impedance 50 Ω
amb
= 25 °C)
Value
Symbol Parameter Test condition
Min. Typ. Max.
T
OP
I
R
CPLD
Ripple
Operating temperature -30 +85 °C
Frequency range
f
(bandwidth)
Insertion loss in
L
bandwidth
Return loss in bandwidth From 824 MHz to 2025 MHz 15 dB
L
Coupling factor (including
attenuator)
Coupling ripple in
individual band
From 824 MHz to 2025 MHz 0.1 0.2 dB
From 824 MHz to 915 MHz 35 39 dB
From 1710 MHz to 2025 MHz 28 33 dB
(824 to 849 MHz) (880 to 915 MHz)
(1710 to 1785 MHz) (1850 to
1910 MHz)(1880 to 2025 MHz)
824 2025 MHz
0.5 dB
DIR Coupler directivity From 824 MHz to 2025 MHz 20 25 dB
Unit
kV
kV
Unit
Unit
2/8 Doc ID 15366 Rev 3
CPL-WB-01C2 Characteristics
1.1 RF measurement (on reference evaluation board)
Measurements done on reference evaluation board under 50 Ω, de-embedding at
CPL-WB-01C2 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 15366 Rev 3 3/8
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