參數(shù)資料
型號： SI3200-G-FSR
廠商： Silicon Laboratories Inc
文件頁數(shù)： 43/112頁
文件大小： 0K
描述： IC SLIC/CODEC 100V LINE 16SOIC
標(biāo)準(zhǔn)包裝： 2,500
系列： ProSLIC®
功能： 用戶線路接口概念（SLIC），CODEC
接口： GCI，PCM，SPI
電路數(shù)： 2
電源電壓： 3.3V，5V
電流 - 電源： 110µA
功率（瓦特）： 941mW
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 16-SOIC（0.154"，3.90mm Width）裸露焊盤
供應(yīng)商設(shè)備封裝： 16-SOIC N
包裝： 帶卷 (TR)
包括： 電池切換，BORSCHT 功能，DTMF 生成和解碼，F(xiàn)SK 音調(diào)生成，調(diào)制解調(diào)器和傳真音調(diào)檢測
Si3220/25 Si3200/02
36
Rev. 1.3
Not
Recommended
fo
r N
ew
D
esi
gn
s
transition point. In the case of the discrete bipolar
linefeed, since the source impedance is 320
both
before and after the adaptive linefeed transition, the V/I
curve exhibits no discontinuity at the transition points
when VOCDELTA = 0.
3.4.3. Off-Hook to On-Hook Transition
Load lines of 10 k
, 1930 and 1800 are shown in
Figure 16. These load lines intercept the linefeed V/I
curve at the V/I point that would result if a load of that
resistance value were connected across TIP and RING.
As the dc loop is opened, the dc feed will exit the
constant current region (point 4) and enter the 320
source impedance region. As the current in the loop
collapses, the VTIP/RING voltage will linearly increase
until VOCHTH (point 5) is reached. At this point,
adaptive linefeed will transition to a source impedance
of 640
(320 for discrete bipolar transistor linefeed)
and decrease the VOC voltage by VOCDELTA (point 6).
3.4.4. VOCTRACK and Adaptive Linefeed
Hysteresis
The two thresholds, VOCLTH and VOCHTH, control
adaptive linefeed hysteresis as shown in Figure 16.
VOCTRACK is a RAM location and is the actual open-
circuit voltage that is being fed to the line. VOCTRACK
is dependent on the measured VBAT voltage. The
behavior of VOCTRACK is as shown in the equation
below. As long as VBAT is sufficient to supply VOC +
VOV + VCM, VOCTRACK is equal to the programmed
VOC. However, if VBAT becomes too small to support
VOC + VOV + VCM, then VOCTRACK will track the
battery voltage so that the programmed VOV and VCM
are satisfied at the expense of a reduced VOC voltage.
In
the
example
of
therefore,
VOCTRACK = VOC = 48 V.
The following equation describes VOCTRACK behavior:
The values of VOCLTH and VOCHTH are set relative to
VOCTRACK. In the example shown in Figure 16,
VOCLTH is given as –7 V and VOCHTH as +2 V. This
implies that the VOCLTH threshold is located 7 V below
the prevailing value of VOCTRACK, while the VOCHTH
threshold is located 2 V above the prevailing value of
VOCTRACK.
Therefore, the VOCLTH and VOCHTH thresholds will
automatically track the battery voltage along with
VOCTRACK.
In order to provide an adequate level of adaptive
linefeed hysteresis between the on-hook to off-transition
and the off-hook to on-hook transition, VOCLTH is
programmed below VOCTRACK (e.g., –7 V relative to
VOCTRACK), and VOCHTH is programmed above
VOCTRACK (e.g., +2 V above VOCTRACK). Also,
VOCHTH must be less than VOV – 1 V to ensure that a
proper adaptive linefeed transition will occur in a
reduced battery scenario.
3.5. Ground Start Operation
To configure the dc feed for ground start operation, it is
necessary to write the LINEFEED register with the
value corresponding to either TIP-OPEN (LF[2:0] = 011)
or RING-OPEN (LF[2:0] = 111). The TIP-OPEN and
RING-OPEN linefeed modes place the indicated lead in
the OPEN state (>150 k
) while the other lead remains
active.
In ground start operation, an off-hook condition is
signaled by the CPE (Customer Premise Equipment) by
connecting the active lead to earth ground.
The active lead presents a 640
source impedance
before the adaptive linefeed transition (320
for a
discrete
bipolar
linefeed),
and
a
320
source
impedance after the adaptive linefeed transition, as
shown in Figure 17. As for loop start operation, the
adaptive linefeed transitions are governed by the
contents
of
the
VOCLTH
and
VOCHTH
RAM
addresses.
The OPEN lead presents a high-impedance (>150 k
).
Figure 17 illustrates the ground-start VRING/IRING
behavior using VOC = 48 V and ILIM =24mA in the
TIP-OPEN linefeed state. The ground key current
thresholds are programmable via the LONGLOTH and
LONGHITH RAM addresses. The LONGLPF RAM
address provides filtering of the measured longitudinal
currents, and the LONGDBI RAM address provides de-
bouncing. The LONGHI status bit in register LCRRTP
indicates when a ground key event has been detected.
Upon detecting a ground key event, the linefeed
automatically transitions to the FORWARD ACTIVE (if
initially in TIP-OPEN) or REVERSE ACTIVE (if initially
page 46 for additional details.
)
V
(
|
V
|
VOCTRACK
V
|
V
|
VOC
VOCTRACK
V
|
V
|
CM
OV
BAT
CM
OV
OC
BAT
CM
OV
OC
BAT
相關(guān)PDF資料
PDF描述
SI3201-FS IC LINEFEED INTRFC SI321X 16SOIC
VI-BNY-IY-B1 CONVERTER MOD DC/DC 3.3V 33W
VI-27J-IY-F3 CONVERTER MOD DC/DC 36V 50W
VI-27R-IY-F4 CONVERTER MOD DC/DC 7.5V 50W
VI-210-IY-F3 CONVERTER MOD DC/DC 5V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
Si3200-G-GS 功能描述:射頻無線雜項 100 V Linefeed Inter IC unit price RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel
SI3200-G-GSR 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
SI3200-GS 功能描述:射頻無線雜項 100 V Linefeed codec RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel
SI3200-GSR 制造商:Silicon Laboratories Inc 功能描述:
Si3200-KS 功能描述:電信線路管理 IC 100 V LINEFEED INTERFACE IC.CHIPSET 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(jìn)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(jìn)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

*
*
*