Integrated RF
down-converters
STW8210 integrated RF down-converter series with embedded
synthesizer offers top performance, reduces BOM and footprint
With 8 dB gain, 10.5 dB NF and
+25.5 dBm IIP3, the STW8210 series
meets the high-performance and
low-cost demands of equipment
makers, by providing higher
integration.
The STW8210 series integrates a
high-linearity passive down-mixer
and IF amplifier, together with an
integer-N PLL and two wideband
self-calibrated low-noise VCOs.
Its suitability for demodulation
stages of wireless equipment
(such as 3G/LTE cellular base
stations) has already been
proven.
The STW8210 series covers all key
cellular bands with four frequency
variants.
KEY FEATURES
KEY BENEFITS
• High IIP3: 25.5 dBm
• High level of integration: reduced BOM,
• Noise figure: 10.5 dB
• Conversion gain: 8 dB
• RF frequency range: 698 MHz to 2690 MHz
• Wide IF amplifier frequency range: 70 MHz
to 400 MHz
• Low noise Integer-N synthesizer: -155 dBc/Hz noise floor
• Integrated DAC with dual current output
• Dual digital bus interface: SPI & I²C
• 44-lead exposed pad VFQFPN package
footprint and increased reliability
• Full coverage of the cellular infrastructure
standards spectrum
• Leading edge RF performances
• Compliancy with the requirements of
cellular base stations
• Cost-effective solution
TARGETED APPLICATIONS
• Cellular 3G/4G infrastructure equipment
• Other wireless communication systems
7x7x1.0 mm
www.st.com/rf-communication
HIGH-PERFORMANCE, FLEXIBLE AND INTEGRATED
Highly integrated, and demonstrating high-performance wideband capabilities, the STW8210 RF down-converter series are single-chip
alternatives to discrete, expensive and bulky mixer, PLL and VCO solutions. This series has been designed in ST’s proprietary BiCMOS
technology which has proven itself in challenging RF applications.
The STW8210 series provide flexibility for designers by supporting different modes of operation:
• When used in the receiver section it can be configured to offer a dedicated LO (local oscillator) frequency generator for each antenna path.
• Alternatively it can be used in a more traditional antenna-diversity receiver scheme.
• In transmitter loop-back circuits, designers can profit from its excellent gain flatness and the integrated 10-bit DAC.
VDD_RFESD
VSS_RFESD
Evaluation kits for the STW8210 series
include:
VDD_IF
VSS_IF
TEST 2
TEST 1
TEST_ALC
VDD_DAC
VSS_DAC
EVALUATION KITS
REXT_DAC
VDD_ALC
VSS_ALC
I_PINDRV1
I_PINDRV2
STW8210 SERIES BLOCK DIAGRAM
• Evaluation board
DAC
RF_IN
RF_VSS
RF_CT
MIXDRV_CT
IF_OUTP
IF_OUTN
IF
AMP
• GUI (graphical user interface) software to
program the device
• PLLSim software to simulate PLL
MIX
DRV
VDD_MIXDRV
VSS_MIXDRV
performances and loop filter design
VDD_DIV
VSS_DIV
DIV
DBUS
OUTBUFN
OUTBUFP
VCO
calibrator
EXTVCO_INP
EXTVCO_INN
VDD_VC0
VSS_VC0
VCO
divider
VCO
BUF
VDD_IO
VSS_IO
PFD
DN
ADD0
ADD1
ADD2
• STW82100B-EVB
VDD_DIG
VSS_DIG
LOCK_DET
• STW82101B-EVB
• STW82102B-EVB
ICP
CHP
REF
BUF
REF_CLK
VCTRL
Power down
decoder
Power
downs
Evaluation kit order codes:
UP
REF
divider
CAL_VCO
VDD_PSCBUF
VSS_PSCBUF
CAL_VCO
• STW82103B-EVB
VDD_PLL
VSS_PLL
EXT_PD
EXT
LO
VCO
PD<4:0>
• PC connection cable
DBUS_SEL
SDA/DATA
SCL/CLK
LOAD
REXT_CP
VCO
OUT
VSS_CP
LO
OUT
VDD_CP
VDD_OUTBUF
VSS_OUTBUF
DEVICE SUMMARY
Part
number
RF frequency range
[MHz]
LO frequency range
[MHz]
Gain [dB]
NF [dB]
IIP3 [dBm]
PN floor @ 40 MHz
[dBc/Hz]
STW82100B
1620-2400
1650-1950
2050-2370
8
10.5
+25.5
-155
STW82101B
698-960
850-1025
1025-1185
8
10.5
+25.5
-155
STW82102B
1425-1910
1500-1800
1900-2200
8.5
9.5
+24.5
-156
STW82103B
2300-2700
2200-2550
2500-3000
8
10.5
+25.5
-156
© STMicroelectronics - April 2012- Printed in United Kingdom - All rights reserved
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
All other names are the property of their respective owners
Order code: FLSTW82100412
For more information on ST products and solutions, visit www.st.com