CHR2244 Datasheet, PDF (2/16 Pages) United Monolithic Semiconductors – 5.8 GHz One Antenna Reflective Transponder for Tag GaAs Monolithic Microwave IC

CHR2244
5.8 GHz One Antenna Reflective Tag
Electrical Characteristics (Full operating range)
Tamb = -30°C to +80°C
Symbol
Parameter
Test
Conditions
Min
Typ Max
Unit
Fop
Operating RF frequency range
(1)
5.725 5.8 5.875 GHz
BW_rf RF bandwidth
50
MHz
RL_rf (*) RF input return loss
50 Ω
12
7
dB
Vcc
Bias voltage
2.7
3.1 3.6
V
WK_in_imp WK_in port impedance
(*)
6
kΩ
10
pF
T/R_imp (*) T/R input port impedance
100
kΩ
10
pF
T/R_t (*) Transmit to Receive recovery time
150
µs
R/T_t (*) Receive to Transmit recovery time
50
µs
(1) The centre frequency can be adjusted by a matching network located between the antenna and the RF
component.
(*) Note : Min & Max values include technological spreads, supply & temperature range effect.
STANDBY mode : T/R=‘0’ , MOD=‘0’ , WK_in=‘0’
Symbol
SB_out_load
Parameter
Standby output port
load impedance
Test
Conditions
Min
Typ
Max
1
10
SB_out_v (*)
Standby output port
DC voltage high level (1)
low level
Vcc-1
Vcc
0
1
RF_sb_bw
Amplitude modulation frequency
of RF for wake-up
250
500
RF_sb_p (*)
Amplitude modulated RF input
power for wake-up
(2)
-38 -43
Vcc_sb_i (*) Standby DC current
(3)
8
20
(1) The SB_out voltage is high when the RF input signal is AM modulated.
(2) Total transmitted power of the modulated signal (modulation index = 0.5)
(3) Without RF input signal
(*) Note : Min & Max values include technological spreads, supply & temperature range effect.
Unit
MΩ
pF
V
V
kHz
dBm
µA
Ref. : DSCHR2244QDG5053 - 22 Feb 05
2/16
Specifications subject to change without notice
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