參數(shù)資料
型號(hào)： ATA5728P6-TKQY
廠商： ATMEL CORP
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： SPECIALTY TELECOM CIRCUIT, PDSO20
封裝： SSOP-20
文件頁(yè)數(shù)： 26/46頁(yè)
文件大小： 776K
代理商： ATA5728P6-TKQY
32
9106E–RKE–07/08
ATA5723/ATA5724/ATA5728
14. Data Interface
The data interface (see Figure 13-2 on page 30) is designed for automotive requirements. It can
be connected using the pull-up resistor R
pup up to 20V and is short-circuit-protected.
The applicable pull-up resistor R
pup depends on the load capacity CL at pin DATA and the
selected BR_range (see Table 14-1).
Figure 14-1. Application Circuit: f
RF = 315 MHz
(1), 433.92 MHz or without SAW Filter
Note:
For 315 MHz application pin MODE must be connected to GND.
Table 14-1.
Applicable R
pup
-
BR_range
Applicable Rpup
CL ≤ 1nF
B0
1.6 k
Ω to 47 kΩ
B1
1.6 k
Ω to 22 kΩ
B2
1.6 k
Ω to 12 kΩ
B3
1.6 k
Ω to 5.6 kΩ
CL ≤ 100pF
B0
1.6 k
Ω to 470 kΩ
B1
1.6 k
Ω to 220 kΩ
B2
1.6 k
Ω to 120 kΩ
B3
1.6 k
Ω to 56 kΩ
11
12
13
14
15
16
17
18
19
20
3
10
9
8
7
6
5
4
2
1
LNAGND
LNA_IN
LNAREF
AGND
RSSI
TEST1
AVCC
CDEM
IC_ACTIVE
SENS
TEST2
TEST3
XTAL1
XTAL2
DVCC
MODE
DATA_CLK
DGND
POLLING/_ON
DATA
F
crystal
CL2
R2
L1
GND
C16
C17
RF_IN
VS
R3
1.6 k
Ω
56 k
Ω to 150 kΩ
CL1
DATA_CLK
Sensitivity reduction
POLLING/_ON
DATA
C12
10 nF
10%
C13
10 nF
10%
C14
39 nF
5%
C7
4.7 F
10%
VX = 5V to 20V
IC_ACTIVE
RSSI
ATA5723
ATA5724
ATA5728
+
Table 14-2.
Input Matching to 50
Ω
RF Frequency
(MHz)
LNA Matching
Crystal Frequency
fXTAL (MHz)
C16 (pF)
C17 (pF)
L1 (nH)
315
Not connected
3
39
14.71875
433.92
Not connected
3
20
13.52875
868.3
1
3
6.8
13.55234
相關(guān)PDF資料
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