ATA5746 ATMEL Corporation, ATA5746 Datasheet - Page 31

• Manufacturer Part Number: ATA5746
• Description: (ATA5745 / ATA5746) UHF ASK/FSK Receiver
• Manufacturer: ATMEL Corporation

13. Electrical Characteristics: General (Continued)
All parameters refer to GND and are valid for T
Typical values are given at V
consumption, timing, and digital pin properties can be found in the specific sections of the “Electrical Characteristics”.
4596A–RKE–05/06
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note:
3.10 System noise figure
No. Parameters
3.5
3.6
3.7
3.8
3.9
Sensitivity change at
f
compared to
f
Sensitivity change versus
temperature, supply
voltage and frequency
offset
Reduced sensitivity
Reduced sensitivity
variation over full
operating range
Maximum frequency
offset in FSK mode
Supported FSK
frequency deviation
RF
RF
1. Pin numbers in parenthesis were measured with RF_IN matched to 50Ω according to
= 433.92 MHz
= 315 MHz
values as in
Table 2-2 on page 6
VS3V_AVCC
Test Conditions
f
f
P = P
P = P
FSK f
∆f
ASK 100%
∆f
P = P
∆P
P = P
∆P
R
pin SENSE to
pin VS3V_AVCC
R
f
R
f
R
f
R
f
R
R
P
Maximum frequency
difference of f
receiver and transmitter in
FSK mode (f
center frequency of the
FSK signal with
f
f
With up to 2 dB
loss of sensitivity.
Note that the tolerable
frequency offset is 12 kHz
lower for f
than for f
hence,
∆f
f
f
RF
RF
in
in
in
in
BIT
DEV
RF
RF
Red
Sense
Sense
Sense
Sense
Sense
Sense
Sense
OFFSET
OFFSET
OFFSET
= 433.92 MHz
= 433.92 MHz
= 315 MHz
= 315 MHz
REF2
REF2
= 315 MHz
= 433.92 MHz
= 315 MHz to
= 433.92 MHz
= 10 Kbits/s
= V
= ±38 kHz
= P
REF_ASK
REF_FSK
REF_ASK
REF_FSK
DEV
connected from
= 62 kΩ
= 82 kΩ
= 62 kΩ
= 82 kΩ
= 62 kΩ
= 82 kΩ
VS5V
Ref_Red
≤ ±160 kHz
≤ ±160 kHz
DEV
≤ ±148 kHz
= ±38 kHz
DEV
amb
= 3V, T
(RF
= ±38 kHz,
RF
+ ∆P
+ ∆P
+ ∆P
+ ∆P
= ±50 kHz
RF
+ P
is the
= –40°C to +105°C, V
IN
between
).
REF1
REF1
REF1
REF1
∆Red
amb
+
+
= 25°C, and f
Pin
(14)
(14)
(14)
(14)
(14)
(14)
(1)
ATA5745/ATA5746 [Preliminary]
RF
VS3V_AVCC
= 315 MHz unless otherwise specified. Details about current
∆f
Symbol
P
∆P
∆P
∆P
Ref_Red
OFFSET
f
NF
NF
DEV
REF1
REF2
Red
= V
VS5V
–160
Min.
+4.5
–10
±18
= 2.7V to 3.3V, and V
Figure 2-1 on page 6
Typ.
±38
–76
–88
–76
–88
6.0
7.0
+1
VS5V
Max.
+160
–1.5
+10
±50
10
9
= 4.5V to 5.5V.
with component
(peak
level)
dBm
dBm
dBm
dBm
dBm
Unit
kHz
kHz
dB
dB
dB
dB
Type*
C
C
C
C
B
B
B
B
B
B
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