參數(shù)資料
型號： Si3200-X-FS
廠商： Electronic Theatre Controls, Inc.
英文描述： DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
中文描述： 兩個可編程的CMOS用戶接口與在線監(jiān)測
文件頁數(shù)： 44/128頁
文件大?。?/td> 2327K
代理商： SI3200-X-FS
Si3232
44
Preliminary Rev. 0.96
4.12. Relay Driver Considerations
The Si3232 includes a general-purpose driver output for
each channel (GPOa, GPOb) to drive external test
relays. In most applications, the relay can be driven
directly from the Si3232 with no external relay drive
circuitry required. Figure 21 illustrates the internal relay
driver circuitry using a 3 V relay.
Figure 21. Si3232 Internal Relay Drive Circuitry
The internal driver logic and drive circuitry is powered
from the same 3.3 V supply as the chip’s main supply
(VDD1–VDD4 pins). When operating external relays
from a V
CC
supply that is equal to the chip’s V
DD
supply,
an internal diode network provides protection against
overvoltage conditions caused by flyback spikes when
the relay is opened. Only 3 V relays may be used in the
configuration shown in Figure 21, and either polarized
or non-polarized relays are acceptable provided both
V
CC
and V
DD
are powered by a 3.3 V supply. The input
impedance, R
IN
, of the relay driver pins is a constant
11
while sinking less than the maximum rated 85 mA
into the pin.
If the desired operating voltage of the relay, V
CC
, is
higher than the Si3232’s V
DD
supply voltage, an
external drive circuit is required to eliminate leakage
from V
CC
to V
DD
through the internal protection diode.
In this configuration, a polarized relay is recommended
to provide optimal overvoltage protection with minimal
external components. Figure 22 illustrates the required
external
drive
circuit,
recommended values for R
DRV
for typical relay
characteristics
and
V
CC
impedance, R
OUT
, of the relay driver pins is a constant
63
while sourcing less than the maximum rated
28 mA out of the pin.
and
Table 26
provides
supplies.
The
output
Figure 22. Driving Relays with V
CC
> V
DD
The maximum allowable R
DRV
value can be calculated
using the following equation:
where
β
Q1,MIN
~ 30 for a 2N2222
Si3232
Relay
Driver
Logic
V
DD
GND
GPOa/b
V
CC
3 V/5 V Relay
(polarized or
non-polarized)
Table 26. Recommended R
DRV
Values
ProSLIC
V
DD
Relay
V
CC
Relay
R
COIL
Maximum
R
DRV
Recom-
mended
5% Value
3.3 V
±5%
3.3 V
±5%
64
Not
Required
—
3.3 V
±5%
5 V
±5%
178
2718
2.7 k
3.3 V
±5%
12 V
±10%
1028
6037
5.6 k
3.3 V
±5%
24 V
±10%
2880
8364
8.2 k
3.3 V
±5%
48 V
±10%
7680
11092
11 k
Si3232
V
DD
GPOa
GPOb
V
CC
Polarized
relay
R
DRV
I
DRV
Q1
MaxR
DRV
(
-----------------------–
V
0.6 V
V
CC,MAX
)
R
RELAY
(
0.3 V
–
) β
Q1,MIN
(
)
R
SOURCE
–
=
相關(guān)PDF資料
PDF描述
Si3200-X-GS DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
Si3232-X-FQ DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
Si3232-X-GQ DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
SI3211 PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
SI3210M-KT PROSLIC PROGRAMMABLE CMOS SLIC/CODEC WITH RINGING/BATTERY VOLTAGE GENERATION
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SI3200-X-GS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DUAL PROGRAMMABLE CMOS SLIC WITH LINE MONITORING
Si3201-BS 功能描述:電信線路管理 IC 100V Linefeed Inter- face IC for Si321x RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
SI3201-BSR 制造商:Silicon Laboratories Inc 功能描述:
Si3201-FS 功能描述:電信線路管理 IC 100 V Linefeed InterfaceICSi321X RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
SI3201-FSR 功能描述:電信線路管理 IC 100 V Linefeed Interface RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*