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HC5517B の電気的特性と機能

HC5517BのメーカーはIntersil Corporationです、この部品の機能は「Low Cost 3 REN Ringing SLIC for ISDN Modem/TA and WL」です。


製品の詳細 ( Datasheet PDF )

部品番号 HC5517B
部品説明 Low Cost 3 REN Ringing SLIC for ISDN Modem/TA and WL
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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HC5517B Datasheet, HC5517B PDF,ピン配置, 機能
Data Sheet
HC5517B
July 1998 File Number 4404.2
Low Cost 3 REN Ringing SLIC for ISDN
Modem/TA and WL
The HC5517B low cost, 3 REN ringing SLIC is designed to
accommodate a wide variety of short loop applications and
provides the same degree of flexibility as the high
performance HC5517. The flexible features include open
circuit tip to ring DC voltages, user defined ringing
waveforms, ring trip detection thresholds, and loop current
limits that can be tailored for many applications. Additional
features of the HC5517B are complex impedance matching,
pulse metering, and transhybrid balance. The HC5517B is
designed for use in short loop, low cost systems where
traditional ring generation is not economically feasible.
The device is manufactured in a high voltage Dielectric
Isolation (DI) process. The DI process provides substrate
latch up immunity, resulting in a robust system design. A
thermal shutdown with an alarm output and line fault
protection are also included for operation in harsh
environments.
Ordering Information
PART
NUMBER
HC5517BCM
HC5517BCB
TEMP. RANGE
(oC) PACKAGE
0 to 75 28 Ld PLCC
0 to 75 28 SOIC
PKG. NO.
N28.45
M28.3
Block Diagram
Features
• Load Drive Capability . . . . . . . . . . . . . . . . . . . . . . . 3 REN
• Trapezoidal, Square or Sine Wave Capability
• Ringing from -80V Battery . . . . . . . . . . . . . . . . . . . 75VP-P
• Ringing from -75V Battery . . . . . . . . . . . . . . . . . . . 70VP-P
• Ringing Current Independent of Loop Current Setting
• Ringing Crest Factor Independent of REN Loading
• Latchup Immune to Inductive Kick Back and Hot Plug
• Fax, Answering Machine and MTU Compatible
• Resistive and Complex Impedance Matching
• Programmable Loop Current Limit
• Switch Hook, Ring Trip and Ground Key Detection
• Single Low Voltage +5V Supply
Applications
• Solid State Line Interface Circuit for Hybrid Fiber Coax, Set
Top Box, Voice/Data Modems
• Related Literature
- AN9607, Impedance Matching Design Equations
- AN9628, AC Voltage Gain
- AN9636, Implementing an Analog Port for ISDN
- AN549, The HC-5502/4X Telephone SLIC
TIP FEED
TIP SENSE
RING FEED
RING SENSE 1
RING SENSE 2
VREF
RTI
VBAT
VCC
AGND
BGND
2-WIRE
INTERFACE
LOOP CURRENT
DETECTOR
FAULT
DETECTOR
BIAS
CURRENT
LIMIT
RING TRIP
DETECTOR
IIL LOGIC INTERFACE
F1 F0 RS TST
4-WIRE
INTERFACE
+-
RELAY
DRIVER
RDI
VRX
VTX
VRING
- IN 1
OUT 1
SHD
ALM
ILIMIT
RTD
RDO
61 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999

1 Page





HC5517B pdf, ピン配列
HC5517B
Electrical Specifications
Unless Otherwise Specified, Typical Parameters are at TA = 25oC, Min-Max Parameters are over
Operating Temperature Range, VBAT = -24V, VCC = +5V, AGND = BGND = 0V. All AC Parameters are specified
at 6002-Wire Terminating Impedance (Continued)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
Frequency Response
300Hz to 3400Hz (Note 3) Referenced to Absolute
Level at 1kHz, 0dBm Referenced 600
-
±0.02 ±0.06
dB
Level Linearity
2-Wire to 4-Wire and 4-Wire to 2-Wire
Referenced to -10dBm (Note 3)
+3 to -40dBm
-
-
±0.08
dB
-40 to -50dBm
-
-
±0.12
dB
-50 to -55dBm
- - ±0.3 dB
Absolute Delay
2-Wire/4-Wire
(Note 3)
300Hz to 3400Hz
- - 1.0 µs
4-Wire/2-Wire
300Hz to 3400Hz
- - 1.0 µs
4-Wire/4-Wire
300Hz to 3400Hz
- 0.95 1.5 µs
Transhybrid Loss
Total Harmonic Distortion
2-Wire/4-Wire, 4-Wire/2-Wire, 4-Wire/4-Wire
VIN = 1VP-P at 1kHz (Note 3,4)
Reference Level 0dBm at 600
300Hz to 3400Hz (Note 3)
30 40 - dB
- - -50 dB
Idle Channel Noise
2-Wire and 4-Wire
(Note 3)
C-Message
- 3 - dBrnC
Psophometric (Note 3)
- -87 - dBmp
Power Supply Rejection Ratio
VCC to 2-Wire
VCC to 4-Wire
VBAT to 2-Wire
VBAT to 4-Wire
VCC to 2-Wire
VCC to 4-Wire
VBAT to 2-Wire
VBAT to 4-Wire
DC PARAMETERS
(Note 3)
30Hz to 200Hz, RL = 600
(Note 3)
200Hz to 16kHz, RL = 600
20 40 - dB
20 40 - dB
20 40 - dB
20 50 - dB
30 40 - dB
20 28 - dB
20 50 - dB
20 50 - dB
Loop Current Programming
Limit Range
20 (Note
5)
-
60 mA
Accuracy
15 -
-%
Loop Current During Power Denial
Fault Currents
TIP to Ground (Note 3)
RL = 200
- ±4 ±7 mA
- 30 - mA
RING to Ground
- 120 - mA
TIP and RING to Ground (Note 3)
- 150 - mA
Switch Hook Detection Threshold
- 12 15 mA
Ring Trip Comparator Voltage Threshold
Thermal ALARM Output (Note 3)
Safe Operating Die Temperature Exceeded
-0.28
140
-0.24
-
-0.22
160
V
oC
Dial Pulse Distortion (Note 3)
- 0.1 0.5 ms
63


3Pages


HC5517B 電子部品, 半導体
HC5517B
Circuit Operation and Design Information
SLIC DESIGN EQUATIONS
FUNCTION
EQUATION
DEFINITION OF TERMS
2-Wire to 4-Wire Gain
4-Wire To 2-wire Gain
4-Wire To 4-wire Gain
Loop Current Limit Programming
V----V-O---2-U---W-T----1- = –Z-2---02----0w-- ⋅ -RR----ZR----OF--
-VV----2R---W-X--
=
2
Z----2----W----Z--+--2---ZW----S----L---I--C--
V----V-O----RU----XT----1-
=
2
-Z---2----W----Z--+--2---ZW----S----L---I--C--
Z--2--2-0---W0--- -RR----ZR----OF--
ILIMIT = (---0---.--6--(--)2--(--0-R--0--I--xL---R1-----+I--L---R2---)-I--L----2---)
VOUT1 = SLIC 4-wire Output
V2w = Voltage across 2-wire load
Z2W = 2-Wire Impedance
V2W = Voltage Across 2-Wire Load
VRX = SLIC 4-Wire Input
Z2W = 2-Wire Impedance
ZSLIC = SLIC Synthesized Impedance
VOUT1 = SLIC 4-Wire Output
VRX = SLIC 4-Wire Input
Z2W = 2-Wire Impedance
ZSLIC = SLIC Synthesized Impedance
ILIMIT = Programmed Loop Current Limit
RIL1 = Programming Resistor
RIL2 = Programming Resistor
Impedance Matching
RZO = K ⋅ (Z2W 100)
RRF = K 200 2
Z2W = 2-Wire Impedance
K = 100
Through SLIC Ringing
The HC5517B uses linear amplification to produce the ringing
signal. As a result the ringing SLIC can produce sinusoid,
trapezoid or square wave ringing signals. Regardless of the
wave shape, the ringing signal is balanced. The balanced
waveform is another way of saying that the tip and ring DC
potentials are the same during ringing.
Trapezoidal Ringing
The trapezoidal ringing waveform provides a larger RMS
voltage to the handset. Larger RMS voltages to the handset
provide more power for ringing and also increase the loop
length supported by the ringing SLIC.
One set of component values will satisfy the entire ringing
loop range of the SLIC. A single resistor sets the open circuit
RMS ringing voltage, which will set the crest factor of the ring-
ing waveform. The crest factor of the HC5517B ringing wave-
form is independent of the ringing load (REN) and the loop
length. Another robust feature of the HC5517B ringing SLIC is
the ring trip detector circuit. The suggested values for the ring
trip detector circuit cover quite a large range of applications.
The assumptions used to design the trapezoidal ringing
application circuit are listed below:
• Loop current limit set to 25mA.
• Impedance matching is set to 600resistive.
• 2-wire surge protection is not required.
• System able to monitor RTD and SHD.
Logic ringing signal is used to drive RC trapezoid network.
Crest Factor Programming
As previously mentioned, a single resistor is required to set
the crest factor of the trapezoidal waveform. The only design
variable in determining the crest factor is the battery voltage.
The battery voltage limits the peak signal swing and there-
fore directly determines the crest factor.
A set of tables will be provided to allow selection of the crest
factor setting resistor. The tables will include crest factors
below the Bellcore minimum of 1.2 since many ringing SLIC
applications are not constrained by Bellcore requirements.
TABLE 1. CREST FACTOR PROGRAMMING RESISTOR FOR
VBAT = -80V
RTRAP CF
RMS RTRAP CF
RMS
0
389
640
1.10
1.15
1.20
65.0 8251.25
62.6 9641.30
60.0 10951.35
57.6
55.4
53.3
The RMS voltage listed in the table is the open circuit RMS
voltage generated by the SLIC.
TABLE 2. CREST FACTOR PROGRAMMING RESISTOR FOR
VBAT = -75V
RTRAP CF
RMS RTRAP CF
RMS
0
500
791
1.10
1.15
1.20
60.9 10101.25
58.3 11901.30
55.9 13341.35
53.7
51.6
49.7
66

6 Page



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共有リンク

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