User guide

66
ATA5811/ATA5812 [Preliminary]
4689B–RKE–04/04
2.14
System outband input
1
dB compression point
∆f
meas1
= 10 MHz
f
RF
= 315 MHz
(4) I1dBCP -31 dBm C
f
RF
= 433.92 MHz (4) I1dBCP -30 dBm C
f
RF
= 868.3 MHz (4) I1dBCP -27 dBm C
2.15 LNA input impedance
f
RF
= 315 MHz 4 Z
in_LNA
(44 – j233) Ω C
f
RF
= 433.92 MHz 4 Z
in_LNA
(32 – j169) Ω C
f
RF
= 868.3 MHz 4 Z
in_LNA
(21 – j78) Ω C
2.16
Maximum peak RF input
level, ASK and FSK
BER < 10
-3
, ASK: 100% (4) P
IN_max
-10 +10 dBm C
FSK: f
DEV
= ±16 kHz (4) P
IN_max
-10 +10 dBm C
2.17 LO spurious at LNA_IN
f < 1 GHz (4) -57 dBm C
f >1 GHz (4) -47 dBm C
f
RF
= 315 MHz (4) -100 dBm C
f
RF
= 433.92 MHz (4) -97 dBm C
f
RF
= 868.3 MHz (4) -84 dBm C
2.18 Image rejection
Within the complete
image band
(4) 20 30 dB A
2.19
Useful signal to interferer
ratio
Peak level of useful
signal to peak level of
interferer for BER < 10
-3
with any modulation
scheme of interferer
FSK BR_Ranges 0, 1, 2 (4) SNR
FSK0-2
2 3 dB B
FSK BR_Range_3 (4) SNR
FSK3
4 6 dB B
ASK (P
RF
< P
RFIN_High
) (4) SNR
ASK
10 12 dB B
2.20 RSSI output
Dynamic range (4), 36 D
RSSI
70 dB A
Lower level of range
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
(4), 36 P
RFIN_Low
-116
-115
-112.3
dBm
dBm
dBm
A
Upper level of range
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
(4), 36 P
RFIN_High
-46
-45
-42.3
dBm
dBm
dBm
A
Gain (4), 36 5.5 8.0 10.5 mV/dB A
Output voltage range (4), 36 OV
RSSI
400 1100 mV A
2.21
Output resistance RSSI
pin
RX mode
TX mode
36 R
RSSI
8
32
10
40
12.5
50
kΩ C
Electrical Characteristics: General (Continued)
All parameters refer to GND and are valid for T
amb
= -40°C to +105°C, V
VS1
= V
VS2
= 2.4 V to 3.6 V (1-battery application),
V
VS2
= 4.4 V to 6.6 V (2-battery application) and V
VS2
= V
VAUX
= 4.75 V to 5.25 V (car application). Typical values are given
at V
VS1
= V
VS2
= 3 V and T
amb
= 25°C, f
RF
= 433.92 MHz (1-battery application) unless otherwise specified. Details about cur-
rent consumption, timing and digital pin properties can be found in the specific sections of the “Electrical Characteristics”.
No. Parameters Test Conditions Pin
(1)
Symbol Min. Typ. Max. Unit Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note: 1. Pin numbers in brackets mean they were measured with RF_IN matched to 50 Ω according to Figure 7 on page 10 with
component values according to Table 2 on page 10 and RF_OUT matched to 50 Ω according to Figure 16 on page 19 with
component values according to Table 7 on page 19.