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ISL15100 の電気的特性と機能

ISL15100のメーカーはIntersilです、この部品の機能は「PLC Differential Line Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL15100
部品説明 PLC Differential Line Driver
メーカ Intersil
ロゴ Intersil ロゴ 




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ISL15100 Datasheet, ISL15100 PDF,ピン配置, 機能
Single Port, PLC Differential Line Driver
ISL15100
The ISL15100 is a single port differential line driver developed
for Power Line Communication (PLC) applications. The device
is designed to drive heavy line loads while maintaining the
high level of linearity required in OFDM PLC modem links. With
15.5dBm of total transmit signal power into 100Ω line load,
the driver achieves -43dB average MTPR distortion across the
output spectrum up to 86MHz.
The ISL15100 has two bias current control pins (C0, C1) to
allow for four power settings (disable, low, medium, high). In
disable mode, the line driver outputs maintain a high
impedance in the presence of high receive signal amplitude,
so it doesn’t affect TDM receive signal integrity.
The ISL15100 is available in the thermally-enhanced 16 Ld
QFN and is specified for operation over the full -40°C to +85°C
ambient temperature range.
Features
• Single differential driver
• 100MHz Broadband PLC G.hn, EOC, HomePlug AV2
• Control pins for enable/disable and supply current selection
• High output impedance when disabled for TDM operation
• -43dBc average MTPR distortion at full line power
• Single +12V or bipolar ±6V nominal supplies
• High surge current handling capability
Applications
• Power Line Communication differential driver
• Pin compatible upgrade to ISL1571IRZ
Related Literature
AN1325 “Choosing and Using Bypass Capacitors”
PART #
ISL1571
TABLE 1. ALTERNATE SOLUTIONS
NOMINAL ±VS
(V)
BANDWIDTH
(MHz)
APPLICATIONS
±6, +12
200 HomePlug AV1
100n
500
AFE
Rg
Vcm 133
2.2n
+12V
SUPPLY
DECOUPLING
+ NOT SHOWN
½ ISL15100
-
Rf
1kΩ
3.9
Rf
1kΩ
-
1:2
100Ω
NOMINAL
LINE
500
100n
½ ISL15100
+
3.9
TYPICAL DIFFERENTIAL I/O LINE DRIVER
FIGURE 1. TYPICAL APPLICATION CIRCUIT
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
2
7 12 17 22 27 32 37 42 47
FREQUENCY (MHz)
FIGURE 2. 50MHz PLC SPECTRUM
September 19, 2013
FN8577.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL15100 pdf, ピン配列
Pin Configuration
ISL15100
ISL15100
(16 LD QFN)
TOP VIEW
16 15 14 13
NC 1
INA- 2
INA+ 3
12 NC
11 INB-
EP*
10 INB+
GND 4
9 C1
5678
*EXPOSED THERMAL PAD CONNECTS TO MOST NEGATIVE SUPPLY
Pin Descriptions
PIN NUMBER
EP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
THERMAL PAD
NC
INA-
INA+
GND
NC
NC
VS-
C0
C1
INB+
INB-
NC
OUTB
VS+
NC
OUTA
C0, C1 Truth Table
C1 C0
00
01
10
11
FUNCTION
Connect to the Most Negative Supply
No Internal Connection
Amplifier A Inverting Input
Amplifier A Non-Inverting Input
Ground
No Internal Connection
No Internal Connection
Negative Supply Voltage (-6V for split supplies, GND for single supply operation)
Digital Control Pin
Digital Control Pin
Amplifier B Non-Inverting Input
Amplifier B Inverting Input
No Internal Connection
Amplifier B Output
Positive Supply Voltage (+6V for split supplies, +12V for single supply operation)
No Internal Connection
Amplifier A Output
High Bias Setting
Medium Bias Setting
Low Bias Setting
Outputs Disabled (Power Down)
FUNCTION
3 FN8577.0
September 19, 2013


3Pages


ISL15100 電子部品, 半導体
ISL15100
Applications Information
Product Description
The ISL15100 is a differential operational amplifier designed for
line driving in power line communications (PLC). It is a low
distortion, current mode feedback amplifier that draws
moderately low supply current. Due to the current feedback
architecture, the ISL15100 closed-loop -3dB bandwidth is
dependent on the value of the feedback resistor. The desired
bandwidth is selected by choosing the feedback resistor, RF, and
then the gain is set by picking the gain resistor, RG.
Feedback Resistor Values
The ISL15100 has been designed and specified with RF = 1k
for AV = +16. As is the case with all current feedback amplifiers,
wider bandwidth at the expense of slight peaking, can be
obtained by reducing the value of the feedback resistor.
Inversely, larger values of the feedback resistor will cause rolloff
to occur at a lower frequency.
Quiescent Current vs Temperature
The ISL15100 was designed to have the quiescent current
increase with temperature, which maintains good distortion
performance at high temperatures.
Supply Voltage Range
The ISL15100 operates with bipolar supply voltages from ±4.0V
to ±6.6V (±6.65V maximum). Optimum bandwidth, slew rate,
and video characteristics are obtained at higher supply voltages.
Single Supply Operation
If a single supply is desired, values from +8.0V to +13.2V (+13.3V
maximum) can be used as long as the input common mode
range is not exceeded. When using a single supply, be sure to
either:
1. DC bias the inputs at an appropriate common mode voltage
and AC-couple the signal.
2. Ensure the driving signal is within the common mode range of
the ISL15100.
Multi-Tone Power Ratio (MTPR)
G.hn PLC uses OFDM modulation to digitally encode data for
communication. A carrier spacing of 24.41kHz is used in power
lines, and 48.82kHz is used in phone lines.
In multi-tone signaling, linearity is shown in the MTPR
measurement. MTPR measures the difference in power of a
carrier tone vs. a missing tone.
-30
-40
-50
-60
MTPR
-70
-80
-90
-100
1.50
1.52
1.54
1.56
1.58
FREQUENCY (MHz)
FIGURE 4. PLC SIGNAL TONES WITH 25kHz SPACING
1.60
Figure 4 shows ISL15100's MTPR performance for a narrow
frequency span.
Disable Linearity
Unlike DSL, communication in PLC systems is half duplex
meaning only one device can transmit at a time. When the line
driver is not transmitting, it is disabled and the receiver is
enabled. Figure 5 shows the shared transmit and receive signal
path of two ends. When Txa is transmitting, optimal MTPR is
achieved if Txb is removed. Since Txb cannot be removed, the
best MTPR occurs if the line driver is a very high impedance
when disabled.
RBM are resistors to limit fault currents, and to provide a driving
impedance to the transformer, thus setting its frequency span.
RBM is typically low in value (<10Ω).
FIGURE 5. Tx AND Rx SIGNAL PATH. CASE1:[Txa: ON, Rxa: OFF, Txb: OFF, Rxb: ON]. CASE2:[Txa: OFF, Rxa: ON, Txb: ON, Rxb: OFF]
6 FN8577.0
September 19, 2013

6 Page



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部品番号部品説明メーカ
ISL15100

PLC Differential Line Driver

Intersil
Intersil


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