Rainbow Electronics ATA5812 - Manual (Page 72)

72
ATA5811/ATA5812 [Preliminary]
4689B–RKE–04/04
5 Synthesizer
5.1 Spurious TX mode
At ±f
CLK
, CLK enabled
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
SP
TX
-72
-68
-70
dBC A
at ±f
XTO
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
SP
TX
-70
-66
-60
dBC A
5.2 Spurious RX mode
At ±f
CLK
, CLK enabled
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
SP
RX
< -75
< -75
< -75
dBC A
at ±f
XTO
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
SP
RX
-75
-75
-68
dBC A
5.3
In loop phase noise
TX mode
Measured at 20 kHz
distance to carrier
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
L
TX20k
-85
-80
-75 dBC/Hz A
5.4
Phase noise at 1M
RX mode
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
L
RX1M
-121
-120
-113
dBC/Hz A
5.5
Phase noise at 1M
TX mode
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
L
TX1M
-113
-111
-107
dBC/Hz A
5.6
Phase noise at 10M
RX mode
Noise floor PLL L
RX10M
-135 dBC/Hz B
5.7
Loop bandwidth PLL
TX mode
Frequency where the
absolute value loop
gain is equal to 1
f
Loop_PLL
70 kHz B
5.8
Frequency deviation
TX mode
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
f
DEV_TX
±15.54
±16.17
±16.37
kHz D
5.9 Frequency resolution
f
RF
= 315 MHz
f
RF
= 433.92 MHz
f
RF
= 868.3 MHz
4, 10
∆
f
Step_PLL
777.1
808.9
818.6
Hz D
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.