- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384393 > HC55120CMZ (INTERSIL CORP) Low Power Universal SLIC Family PDF資料下載
參數(shù)資料
| 型號： | HC55120CMZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 模擬傳輸電路 |
| 英文描述： | Low Power Universal SLIC Family |
| 中文描述： | TELECOM-SLIC, PQCC28 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS-018AB, LCC-28 |
| 文件頁數(shù)： | 15/36頁 |
| 文件大小： | 701K |
| 代理商： | HC55120CMZ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
15
FN4659.13
June 1, 2006
On Hook Overhead Voltage
The on hook overhead
voltage at the load (V
OH
(on)
at Load) is independent of the
V
BH
battery voltage. Once
set, the on hook voltage
remains constant as the V
BH
battery voltage changes. The
on hook voltage also remains
constant over temperature
and line leakages up to 0.6
times the Switch Hook Detect threshold (I
SHD
). The
maximum loop current for a constant on hook overhead
voltage is defined as ISH-.
The on hook overhead voltage, required for a given signal
level at the load, must take into account the AC voltage drop
across the 2 external protection resistors (R
P
) and the 2
internal sense resistors (R
S
) as shown in Figure 16. The AC
on hook overload voltage is calculated using Equation 1.
where
V
OH(on) at Load
= On hook overhead voltage at load
V
sp(on)
= Required on hook transmission for speech
R
P
= Protection Resistors (Typically 30
)
R
S
= Internal Sense Resistors (40
)
Z
L
= AC load impedance for (600
)
1.5V = Additional on hook overhead voltage requirement
To account for any process and temperature variations in the
performance of the SLIC, 1.5V is added to the overhead
voltage requirement for the on hook case in Equation 1 and
2.0V for the off hook case in Equation 3. Note the 2.5V
overhead is automatically generated in the SLIC and is not
part of the external overhead programming.
Internal overhead voltage automatically generated by the SLIC.
FIGURE 15. UniSLIC14 DC FEED CURVE
VBH
2.5V
VOH(off) AT LOAD
ISH-
ILOOP(min)
ILOOP(max)
60k
SLOPE
RLOOP(max)
SLIC SELF PROGRAMMING
T
LOOP CURRENT (mA)
IOH
CONSTANT
CURRENT
REGION
R
SAT
VOH(on) AT LOAD
I
SHD
V
BH
V
OH(on)
2.5V
ON HOOK
OVERHEAD
ISH-
LOOP CURRENT
T
DC FEED CURVE
ISH- = I
SHD
(0.6)
I
SHD
(EQ. 1
V
OH on
)
at Load
V
sp on
)
1
2R
-----------------------------
2R
S
+
L
+
×
1.5V
+
=
FIGURE 16. OVERHEAD VOLTAGE OF THE TIP AND RING
AMPLIFIERS
TIP AND RING
AMPLIFIERS
INTERNAL SENSE
RESISTORS
EXTERNAL PROTECTION
RESISTOR
2R
P
2R
S
OVERHEAD VOLTAGE
V
OH
(ON, OFF)
Where:
V
ZL
is the required on hook or offhook
transmission delivered to the load.
Z
L
REQUIRED
(LOAD)
UniSLIC14
V
ZL
V
OH ON OFF
)
2R
-----------------------------
2R
S
+
L
V
ZL
=
HC55120, HC55121, HC55130, HC55140, HC55142, HC55143, HC55150
相關PDF資料 |
PDF描述 |
|---|---|
| HC55121IBZ | Low Power Universal SLIC Family |
| HC55121IMZ | Low Power Universal SLIC Family |
| HC55130IB96 | Low Power Universal SLIC Family |
| HC55130IBZ | Low Power Universal SLIC Family |
| HC55130IBZ96 | Low Power Universal SLIC Family |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HC55121 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low Power Universal SLIC Family |
| HC55121IB | 制造商:Rochester Electronics LLC 功能描述:LOW POWER,SLIC,POL/REV/METERING,5301B BALANCE - Bulk |
| HC55121IBZ | 功能描述:電信線路管理 IC LW PWR SLIC POL/REV/MTRING 5301B 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 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| HC55121IM | 制造商:Rochester Electronics LLC 功能描述:LOW PWR SLIC,POL REV/METERING,53DB BALANCE - Bulk |
| HC55121IMZ | 功能描述:電信線路管理 IC LW PWR SLIC POLV/MTRING 53DB 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。