CHR2244-QDG_15 Datasheet, PDF (1/14 Pages) United Monolithic Semiconductors – 5.8 GHz One Antenna Reflective Transponder for Tag

CHR2244-QDG
RoHS COMPLIANT
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
5.8GHz ISM band operating frequency
CMOS compatible
Ultra low standby current
Integrated wake-up circuit
High detection sensitivity for downlink
Reflective multiplier for uplink
Single bias voltage
Low cost & high performances plastic package
Lead-free, Matt Tin (Green) solder plating
T/R
MOD WK_in
RF
Det
DATA_out
SB_out
External components Vcc
Transponder block diagram
Main Characteristics
Tamb = +25°C; Vcc = 3.1V
Symbol
Parameter
Min
Typ
Max
Vcc_sb_i
RF_sb_p
RF_dl_p
BW_dl
G_ul
BW_ul
Standby DC current ( Without RF input
signal)
Minimum power for Standby mode
Minimum power for Downlink mode
AM demodulation frequency (Downlink)
Uplink multiplier gain (DSB)
Uplink IF multiplier frequency band
8
14
-39
-43
-39
-43
250
500
-6.5
-4
0.1
10
ESD Protections : Electrostatic discharge sensitive device observe handling precautions !
Unit
µA
dBm
dBm
kHz
dB
MHz
Ref. : DSCHR2244-QDG9030 - 30 Jan 09
1/14
Specifications subject to change without notice
united monolithic semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : [phone] - Fax : [phone]