- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385015 > TR3005 (RF Monolithics, Inc.) 403.50 MHz Hybrid Transceiver PDF資料下載
參數(shù)資料
| 型號： | TR3005 |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 403.50 MHz Hybrid Transceiver |
| 中文描述： | 403.50兆赫混合收發(fā)器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 196K |
| 代理商： | TR3005 |
and CNTRL0 con rol pins. Set ing CNTRL1 and CNTRL0 both high
place the unit in the re ceive mode. Set ing CNTRL1 high and
CNTRL0 low place the unit in the ASK trans mit mode. Set ing
CNTRL1 low and CNTRL0 high place the unit in the OOK trans mit
mode. Set ing CNTRL1 and CNTRL0 both low place the unit in the
power-down (sleep) mode. Note that the re sis or driv ng TXMOD
must be low in the re ceive and power-down modes. The PWIDTH
resistor must also be low in the power down mode to min mize cur
rent. CNTRL1 and CNTRL0 are CMOS com pat ble in puts. These in
puts must be held at a logic level; they can not be left un con nected.
Trans ceiver Event Tim ng
Trans ceiver event tim ng is sum ma ized in Ta ble 1. Please re er to
this ta ble for the fol ow ng dis cus sions.
Turn-On Tim ng
The max mum time t
PR
re quired for the re ceive func ion to be come
op er a ional at turn on is in lu enced by two fac ors. All re ceiver cir
cuitry will be op er a ional 5 ms af er the sup ply volt age reaches
2.2 Vdc. The BBOUT-CMPIN cou pling-capacitor is then DC sta bi
lized in 3 time con stants (3*t
BBC
). The to al turn-on time to sta ble re
ceiver op er a ion for a 10 ms power sup ply rise time is:
t
PR
= 15 ms + 3*t
BBC
The max mum time re quired for ei her the OOK or ASK trans mit er
mode to be come op er a ional is 5 ms af er the sup ply volt age
reaches 2.2 Vdc.
Re ceive-to-Transmit Tim ng
Af er turn on, the max mum time re quired to switch from re ceive to
ei her trans mit mode is 12 μs. Most of this time is due to the start-up
of the trans mit er os cil a or.
Trans mit-to-Receive Tim ng
The max mum time re quired to switch from the OOK or ASK trans
mit mode to the re ceive mode is 3*t
BBC
, where t
BBC
is the BBOUT-
CMPIN cou pling-capacitor time con stant. When the op er at ng tem
per a ure is lim ted to 60
o
C, the time re quired to switch from trans mit
to re ceive is dra mat cally less for short trans mis sions, as less
charge leaks away from the BBOUT-CMPIN cou pling ca pac or.
Sleep and Wake-Up Tim ng
The max mum tran si ion time from the re ceive mode to the
power-down (sleep) mode t
RS
is 10 μs af er CNTRL1 and CNTRL0
are both low (1 μs fall time).
The max mum tran si ion time from ei her trans mit mode to the sleep
mode (t
TOS
and t
TAS
) is 10 μs af er CNTRL1 and CNTRL0 are both
low (1 μs fall time).
The max mum tran si ion time t
SR
from the sleep mode to the re ceive
mode is 3*t
BBC
, where t
BBC
is the BBOUT-CMPIN cou pling-capacitor
time con stant. When the op er at ng tem per a ure is lim ted to 60
o
C,
the time re quired to switch from sleep to re ceive is dra mat cally less
for short sleep times, as less charge leaks away from the BBOUT-
CMPIN cou pling ca pac or.
The max mum time re quired to switch from the sleep mode to ei her
trans mit mode (t
STO
and t
STA
) is 16 μs. Most of this time is due to the
start-up of the trans mit er os cil a or.
AGC Tim ng
The max mum AGC en gage time t
AGC
is 5 μs af er the re cep ion of a
-30 dBm RF sig nal with a 1 μs en ve ope rise time.
The min mum AGC hold-in time is set by the value of the ca pac or
at the AGCCAP pin. The hold-in time t
AGH
= C
AGC
/19.1, where t
AGH
is
in μs and C
AGC
is in pF.
Peak De ec or Tim ng
The Peak De ec or at ack time con stant is set by the value of the ca
pac or at the PKDET pin. The at ack time t
PKA
= C
PKD
/4167, where
t
PKA
is in μs and C
PKD
is in pF. The Peak De ec or de cay time con
stant t
PKD
= 1000*t
PKA
.
Pulse Gen er a or Tim ng
In the low data rate mode, the in er val t
PRI
be ween the fall ng edge
of an ON pulse to the first RF am pli ier and the ris ng edge of the
next ON pulse to the first RF am pli ier is set by a re sis or R
PR
be
tween the PRATE pin and ground. The in er val can be ad usted be
tween 0.1 and 5 μs with a re sis or in the range of 51 K to 2000 K.
The value of the R
PR
is given by:
R
PR
= 404* t
PRI
+ 10.5, where t
PRI
is in μs, and R
PR
is in kilohms
In the high data rate mode (se ected at the PWIDTH pin) the re
ceiver RF am pli i ers op er ate at a nom nal 50%-50% duty cy cle. In
this case, the pe iod t
PRC
from the start of an ON pulse to the first
RF am pli ier to the start of the next ON pulse to the first RF am pli ier
is con rolled by the PRATE re sis or over a range of 0.1 to 1.1 μs us -
ing a re sis or of 11 K to 220 K. In this case R
PR
is given by:
R
PR
= 198* t
PRC
- 8.51, where t
PRC
is in μs and R
PR
is in kilohms
In the low data rate mode, the PWIDTH pin sets the width of the ON
pulse to the first RF am pli ier t
PW1
with a re sis or R
PW
to ground (the
ON pulse width to the sec ond RF am pli ier t
PW2
is set at 1.1 times
the pulse width to the first RF am pli ier in the low data rate mode).
The ON pulse width t
PW1
can be ad usted be ween 0.55 and 1 μs
with a re sis or value in the range of 200 K to 390 K. The value of
R
PW
is given by:
R
PW
= 404* t
PW1
- 18.6, where t
PW1
is in μs and R
PW
is in kilohms
How ever, when the PWIDTH pin is con nected to Vcc through a 1 M
re sis or, the RF am pli i ers op er ate at a nom nal 50%-50% duty cy
cle, fa cil at ng high data rate op er a ion. In this case, the RF am pli i
ers are con rolled by the PRATE re sis or as de scribed above.
LPF Group De ay
The low-pass fil er group de ay is a func ion of the fil er 3 dB band
width, which is set by a re sis or R
LPF
to ground at the LPFADJ pin.
The min mum 3 dB band width f
LPF
= 1445/R
LPF
, where f
LPF
is in kHz,
and R
LPF
is in kilohms.
The max mum group de ay t
FGD
= 1750/f
LPF
= 1.21*R
LPF
, where t
FGD
is in μs, f
LPF
in kHz, and R
LPF
in kilohms.
7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TR3100 | 433.92 MHz Hybrid Transceiver |
| TR40-16B | TR40-16B |
| TR7000 | 433.92 MHz Hybrid Transceiver |
| TR8001 | 868.35 MHz Hybrid Transceiver |
| TR8100 | 916.50 MHz Hybrid Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TR300522W | 制造商:Broadcom Corporation 功能描述:TR3005 22 W TR3005 ORION B2 INTELLIGENT ETHERNET ACCESS PROC - Bulk |
| TR300522X | 制造商:Broadcom Corporation 功能描述:TR3005 22 X TR3005 ORION B2 INTELLIGENT ETHERNET ACCESS PROC - Bulk |
| TR-300-710A1 | 制造商:Telex 功能描述:TR-300 VHF Belt Pack, A4M Headset Jack, 7-10A1 |
| TR-300-912B3 | 制造商:Telex 功能描述:TR-300 VHF Belt Pack, A4M Headset Jack, 9-12B3 |
| TR300R | 制造商:Ferraz Shawmut 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。