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부품번호 | ISL1550 기능 |
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기능 | VDSL2 Differential Line Driver | ||
제조업체 | Intersil | ||
로고 | |||
전체 13 페이지수
Single Port, VDSL2 Differential Line Driver
ISL1550
The ISL1550 is a dual operational amplifier intended to be
used as a differential line driver. ISL1550’s high bandwidth
and low distortion performance enables the support of VDSL2
8b, 17a and 30a modem applications.
This device features a high current drive capability of ±750mA
required to drive large voltage peaks into heavy loads. In
Central Office (CO) applications, the driver achieves a typical
Missing Band Power Ratio (MBPR) of -66dBc in VDSL2 8b
upstream (US) 1 band and MBPR’s of -61dBc and -60dBc in
VDSL2 17a US1 and US2 respectively.
The ISL1550 has two bias current control pins (C0, C1) to allow
for four power settings (disable, low, medium, high). The VDSL
modem DSP configures the line driver’s power setting based
on the desired mode of operation. The line driver operates on a
nominal single +12V or a dual ±6V supplies with bias current
in active mode between 15mA to 32mA, depending on its
power setting. The ISL1550’s gain setting is configurable at
the application level by setting the Rf and Rg resistor values.
The surge current handling of ISL1550 has been enhanced to
allow ITU-T K.20 and GR1089 compliance with minimal
external surge protection circuitry.
The ISL1550 is available in the thermally-enhanced, Pb-free
RoHS compliant 16 Ld QFN package and is specified for
operation over the full -40°C to +85°C temperature range.
Features
• 20dBm output power capability
• Drives up to ±750mA from a +12V supply
• 18VP-P differential output drive into 20Ω
• -89dBc typical driver output distortion at full output at
200kHz, 12VP-P differential
• -61dBc US1, -60dBc US2 avg. MBPR 17a
• Supply range: ±4.0V to ±6.6V, +8.0V to +13.2V
• Thermal shutdown
• K.20, GR-1089 Surge Robustness Validated
Applications
• VDSL2 Profiles: 8MHz, 17MHz, and 30MHz
Related Literature
• AN1325 “Choosing and Using Bypass Capacitors”
PART #
ISL1557
ISL1539A
TABLE 1. ALTERNATE SOLUTIONS
NOMINAL ±VCC
(V)
BANDWIDTH
(MHz)
APPLICATIONS
±6,+12
200
VDSL2
±12,+24
240
VDSL2
100n
500
AFE
Rg
1.5k
2.2n
500
100n
+6V
SUPPLY
DECOUPLING
NOT SHOWN
+
½
ISL1550
-
Rf
750
1k
Rf
- 750
½
ISL1550
+
1k
2.2
1:2.5
100
NOMINAL
LINE
2.2
-6V
FIGURE 1. TYPICAL APPLICATION CIRCUIT
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
8.40M 8.90M 9.40M 9.90M 10.4M 10.9M 11.4M 11.9M
FREQUENCY (Hz)
FIGURE 2. US2 MBPR 17a VDSL2 PERFORMANCE
March 16, 2012
FN6795.0
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 Inc. 2012. 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.
ISL1550
Absolute Maximum Ratings (TA = +25°C)
VS+ Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +13.2V
Driver VIN+ Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .GND to +VS
C0, C1 Voltage to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +VS
Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA
Continuous Output Current for Long Term Reliability. . . . . . . . . . . . . . . . .50mA
ESD Rating
Human Body Model (Tested per JESD22-A114F). . . . . . . . . . . . . . . . . . 4kV
Machine Model (Tested per JESD22-A115C) . . . . . . . . . . . . . . . . . . 300V
Charge Device Model (Tested per JESD22-C101E). . . . . . . . . . . . . .1.5kV
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W) θJC (°C/W)
16 Ld QFN Package (Notes 4, 5) . . . . . . . .
53
16.5
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . .+150°C
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-40°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-40°C to +150°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications VS = ±6V, see Figure 1, TA = +25°C, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 6)
AC PERFORMANCE
BW -3dB Bandwidth
See Figure 1
THD Total Harmonic Distortion, Differential
SR Slew Rate (20% to 80%)
DC PERFORMANCE
f = 200kHz, VO = 12VP-P output, RL = 20Ω
f = 4MHz, VO = 12VP-P output, RL = 100Ω
f = 10MHz, VO = 12VP-P output, RL = 100Ω
VOUT from -6V to +6V (differential)
1500
VOS_CM
Input Offset Voltage Common Mode
VOS_DM
Input Offset Voltage Differential Mode
INPUT CHARACTERISTICS
-45
-7.5
IB+
IB- DM
Non-Inverting Input Bias Current
Inverting Input Bias Current Differential
Mode
-7.0
-45
eO Differential Output Noise
OUTPUT CHARACTERISTICS
See Figure 1 [at transformer input]
VOUT
SUPPLY
Loaded Output Swing (single-ended)
VS = ±6V, RL DIFF = 100Ω
VS = ±6V, RL DIFF = 20Ω
±4.7
+VS Supply Voltage
Single supply (-VS = GND)
8.0
IS+ (Full Bias)
Positive Supply Current
All outputs at 0V, C0 = C1 = 0V
27
IS+ (Medium Bias) Positive Supply Current
All outputs at 0V, C0 = 5V, C1 = 0V
19
IS+ (Low Bias)
Positive Supply Current
All outputs at 0V, C0 = 0V, C1 = 5V
12
IS+ (Power down)
Positive Supply Current
All outputs at 0V, C0 = C1 = 5V
1.3
IINH, C0 or C1
C0, C1 Input Current, High
C0, C1 = 6V
100
IINL, C0 or C1
C0, C1 Input Current, Low
C0, C1 = 0V
-1.5
VINH, C0 or C1
C0, C1 Input Voltage, High
2.0
VINL, C0 or C1
C0, C1 Input Voltage, Low
NOTE:
6. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
TYP
105
-89
-67
-61
2400
-3.0
±7
45
±5.0
±4.5
12
32
23
15
1.6
165
-1.0
MAX
(Note 6) UNIT
MHz
dBc
dBc
dBc
V/µs
+45 mV
+7.5 mV
+7.0 µA
+45 µA
nV√ Hz
V
V
13.2
37
26
18
2.5
224
+1.5
0.8
V
mA
mA
mA
mA
µA
µA
V
V
4 FN6795.0
March 16, 2012
4페이지 ISL1550
Typical Performance Curves
otherwise noted.
6
VCC = ±6V, See Figure 1, TA = +25°C, C0 = 3.3V, C1 = 0V (Medium power), Unless
6
3
25Ω
0
50Ω
-3
3
0
-3 33pF
18pF
-6
16Ω
-9
-6
-9
22pF
-12 1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 15. SMALL SIGNAL FREQUENCY RESPONSE vs RLOAD
-12
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 16. SMALL SIGNAL FREQUENCY RESPONSE vs CLOAD
6
3
0 1VP-P
5VP-P
-3
-6
-9 2VP-P
-12
1M
10M
100M
FREQUENCY (Hz)
FIGURE 17. LARGE SIGNAL FREQUENCY RESPONSE
1G
-30
5VOP-P-DIFF
-40 100Ω RLOAD
-50
-60
THD
-70
-80
2nd HD
-90
3rd HD
-1001M
10M
100M
FREQUENCY (Hz)
FIGURE 18. HARMONIC DISTORTION vs FREQUENCY
-40
-45 100Ω RLOAD
-50
-55
-60
THD
-65
-70
-75
-80 2nd HD
-85 3rd HD
-901
VOP-P-LOAD (V)
10
FIGURE 19. 4MHz HARMONIC DISTORTION vs OUTPUT VOLTAGE
-40
-45 100Ω RLOAD
-50
-55
-60
-65
-70
-75
-80
-85
-90
1
THD
2nd HD
3rd HD
VOP-P-LOAD (V)
10
FIGURE 20. 10MHz HARMONIC DISTORTION vs OUTPUT VOLTAGE
7 FN6795.0
March 16, 2012
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부품번호 | 상세설명 및 기능 | 제조사 |
ISL1550 | VDSL2 Differential Line Driver | Intersil |
ISL1556 | xDSL Differential Line Driver | Intersil Corporation |
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