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CHR2244 Datasheet(PDF) 1 Page - United Monolithic Semiconductors

Part No. CHR2244
Description  5.8 GHz One Antenna Reflective Transponder for Tag GaAs Monolithic Microwave IC
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Maker  UMS [United Monolithic Semiconductors]
Homepage  http://www.ums-gaas.com
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CHR2244 Datasheet(HTML) 1 Page - United Monolithic Semiconductors

 
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CHR2244
RoHS COMPLIANT
Ref. : DSCHR2244QDG5053 - 22 Feb 05
1/16
Specifications subject to change without notice
united monolithic semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09
5.8 GHz One Antenna Reflective Transponder for Tag
GaAs Monolithic Microwave IC
Description
The CHR2244 is a MMIC transponder dedicated to
short range communications at 5.8GHz. It includes all
the RF functions for bi-directional transmission and
CMOS compatible interfaces. Only one antenna is
necessary.
Three modes are implemented :
STANDBY : ultra low current AM detector, with a
reduced bandwidth, providing a wake-up signal on
SB_out output. This signal is a DC voltage. This
output is active when and only when an AM
modulated RF signal is applied to the RF input.
DOWNLINK
:
low
current
AM
detector,
with
optimized IF bandwidth, providing the demodulated
data at the CMOS compatible DATA_out output.
UPLINK : multiplier based on a passive reflective
mixer.
This circuit is manufactured on a MESFET process. It
is supplied in plastic package (QFN-24).
Main Features
n
5.8GHz ISM band operating frequency
n
CMOS compatible
n
Ultra low Standby current
n Integrated wake-up circuit
n High detection sensitivity for Downlink
n Reflective multiplier for Uplink
n
Single bias voltage
n
Low cost & high performances plastic package
n
Lead-free, Matt Tin (Green) solder plating
Det
T/R
MOD WK_in
DATA_out
RF
External components
Vcc
SB_out
Transponder block diagram
Main Characteristics
Tamb = +25°C; Vcc = 3.1V
Symbol
Parameter
Min
Typ
Max
Unit
Vcc_sb_i
Standby DC current ( Without RF input
signal)
8
14
µA
RF_sb_p
RF_dl_p
Minimum power for Standby mode
Minimum power for Downlink mode
-39
-39
-43
-43
dBm
dBm
BW_dl
AM demodulation frequency (Downlink)
250
500
kHz
G_ul
Uplink multiplier gain (DSB)
-6.5
-4
dB
BW_ul
Uplink IF multiplier frequency band
0.1
10
MHz
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !


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