This document contains information on a new product.
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com May 2002
The Communications Ed
g
e TM
Preliminary Information
CV211-1
PCS/DCS-band Dual-Branch Downconverter
Product Features
• High dynamic range downconverter
with integrated LO driver and IF
amplifiers
• Dual channels for diversity
• +27 dBm Input IP3
• +12 dBm Input P1dB
• 11.5 dB Noise Figure
• RF: 1710 - 1910 MHz
• IF: 70 - 250 MHz
• Low-side LO downconverter
• Single supply operation (+5 V)
• 6 x 6 mm QFN SMT package
Product Description
The CV211-1 is a dual-channel high-linearit
y
downconverter designed to meet the
p
erformance, functionality, and cost goals o
f
current and next generation mobile infrastructure
basestations.
It is ideally suited for high dynamic range
receiver front ends using diversity receive
channels. The module is implemented in reliable
GaAs MESFET technology and requires only a
small 6x6 mm footprint.
Typical applications include frequenc
y
downconversion used in CDMA/GSM/TDMA,
CDMA2000, W-CDMA, and EDGE 2.5G and
3G mobile base transceiver stations.
Functional Diagram
Top View
Specifications1
Parameters Units Minimum Typical Maximum Comments
RF Frequency Range MHz 1710 1910
LO Frequency Range MHz 1460 1840
IF Frequency Range MHz 70 250
IF Bandwidth % 20
SSB Conversion Gain dB 8 10 12
Input IP3 dBm +27 ∆f = 1 MHz @ RFin = 0 dBm / tone
Input IP2 dBm +32
Input 1 dB Compression Point dBm +12
Noise Figure dB 11.5 12.5
LO Input Drive Level dBm -2.5 0 +2.5
LO-RF Isolation dB 9 P
LO = 0 dBm
LO-IF Isolation dB 30 P
LO = 0 dBm
Branch-Branch Isolation dB 35
Return Loss: RF Port dB 14
Return Loss: LO Port dB 14
Return Loss: IF Port dB 14
Operating Supply Voltage V +4.75 +5 +5.25
Supply Current mA 380 460
1 Specifications when using application specific circuit with a low side LO = 0 dBm in a downconverting application at 25°C.
Absolute Maximum Rating2 Ordering Information
Parameters Rating Part No. Description
Operating Case Temperature -40° to +85 °C CV211-1 PCS/DCS-band Dual-Branch Downconverter
Storage Temperature -65° to +100 °C
Maximum Junction Temperature +150 °C
2 Operation of this device above any of these parameters may cause permanent damage.
CV Actual Size
8
23
1
17
IF amp
25
27
LO driver amp
IF
RF
7
9 11 13
IF
IF amp
RF
+Vcc 21
This document contains information on a new product.
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com May 2002
The Communications Ed
g
e TM
Preliminary Information
CV211-1
PCS/DCS-band Dual-Branch Downconverter
Application Circuit
Functional Pin Layout
Pin FUNCTION Pin FUNCTION
1 Channel 1 RF Input 15 N/C
2 GND 16 GND
3 +5 V 17 LO input
4 GND 18 GND
5 N/C 19 N/C
6 GND 20 GND
7 Channel 2 RF Input 21 +5 V
8 GND 22 GND
9 Channel 2 IF Mixer Output 23 Channel 1 IF Amp Output / +5 V
10 GND 24 GND
11 Channel 2 IF Amp Input 25 Channel 1 IF Amp Input
12 GND 26 GND
13 Channel 2 IF Amp Output / +5 V 27 Channel 1 IF Mixer Output
14 GND 28 GND
Note 1:
IF Freq (MHz) L4
(nH)
L8
(nH)
C4
(pF)
C11
(pF)
70 – 90 100 100 20 20
230 - 250 47 47 2.7 2.7
All components are of size 0603 or 0402 unless otherwise noted
DNP represents: Do Not Place.
Assembly Layout
This document contains information on a new product.
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com May 2002
The Communications Ed
g
e TM
Preliminary Information
CV211-1
PCS/DCS-band Dual-Branch Downconverter
Outline Drawing Mounting Configuration
Pin FUNCTION Pin FUNCTION
1 RF Amp Output 15 LO Amp Input
2 GND 16 GND
3 N/C 17 N/C
4 GND 18 GND
5 N/C 19 N/C
6 GND 20 GND
7 Mixer RF Port 21 IF Amp Output
8 GND 22 GND
9 N/C 23 IF Amp Input
10 GND 24 GND
11 Mixer LO Port 25 Mixer IF Port
12 GND 26 GND
13 LO Amp Output 27 RF Amp Input
14 GND 28 GND
.325±.050
4.700±.050
EXPOSED PAD
.650 PITCH
.400±.050
.888
6.000±.050
.000 - .050
PAD POSITIONER
.900±.050 .203±.025 (EXPOSED LEAD)
