U3742BM Datasheet, PDF (27/32 Pages) ATMEL Corporation – UHF ASK/FSK RECEIVER

U3742BM
Electrical Characteristics (Continued)
All parameters refer to GND, T_amb = -40°C to +105°C, V_S = 4.5 V to 5.5 V, f₀ = 433.92 MHz and f₀ = 315 MHz, unless other-
wise specified. (V_S = 5 V, T_amb = 25°C)
6.76438 Mhz Oscillator
(Mode 1)
4.90625 Mhz Oscillator
(Mode 0)
Variable Oscillator
Parameter Test Condition
Symbol Min.
Typ. Max. Min. Typ.
Max. Min.
Typ.
Max. Unit
Equivalent
acknowledge
pulse: E_Ack
(Figure 24)
t₈
265
261
128 ´ T_Clk
µs
Equivalent
time window
(Figure 24)
t₉
534
526
258 ´ T_Clk
µs
OFF-bit
programming
window
(Figure 21)
t₁₀
930
916
449.5 ´ T_Clk
µs
Electrical Characteristics
All parameters refer to GND, T_amb = -40°C to +105°C, V_S = 4.5 V to 5.5 V, f₀ = 433.92 MHz and f₀ = 315 MHz, unless other-
wise specified. (V_S = 5 V, T_amb = 25°C)
Parameters
Test Conditions
Symbol
Min.
Typ.
Max. Unit
Current consumption
Sleep mode
(XTO and polling logic active)
IS_off
IC active
(startup-, bit check-, receiving mode)
IS_on
pin DATA = H
190
350
µA
7.0
8.6
mA
LNA Mixer
Third-order intercept point
LNA/mixer/IF amplifier
input matched according to Figure 6
IIP3
-28
dBm
LO spurious emission at RF_In
Input matched according to Figure 6,
required according to I-ETS 300220
IS_LORF
-73
-57
dBm
Noise figure LNA and mixer (DSB) Input matching according to Figure 6
NF
7
dB
LNA_IN input impedance
at 433.92 MHz
at 315 MHz
Zi_{LNA_IN}
1.0 || 1.56
1.3 || 1.0
kW || pF
kW || pF
1 dB compression point
(LNA, mixer, IF amplifier)
Maximum input level
Input matched according to Figure 6,
referred to RF_in
Input matched according to Figure 6,
BER £ 10^-3,
ASK mode
IP_1db
P_{in_max}
-40
dBm
-28
dBm
-20
dBm
Local Oscillator
Operating frequency range VCO
Phase noise VCO/LO
f_osc = 432.92 MHz
at 1 MHz
at 10 MHz
f_VCO
L (fm)
299
449
MHz
-93
-113
-90 dBC/Hz
-110 dBC/Hz
Spurious of the VCO
VCO gain
at ±f_XTO
K_VCO
-55
-47
dBC
190
MHz/V
27
4735A–RKE–11/03