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参数资料
| 型号： | ISL59830IA |
| 厂商： | INTERSIL CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | True Single Supply Video Driver |
| 中文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PDSO16 |
| 封装： | 0.150 INCH, PLASTIC, QSOP-16 |
| 文件页数： | 13/14页 |
| 文件大小： | 416K |
| 代理商： | ISL59830IA |
13
FN7489.2
August 15, 2005
amplifier from the cable and allow extensive capacitive drive.
However, other applications may have high capacitive loads
without a back-termination resistor. Again, a small series
resistor at the output can help to reduce peaking. The
ISL59830 is a triple amplifier designed to drive three
channels; simply deal with each channel separately as
described in this section.
DC-Restore
When the ISL59830 is AC-coupled it becomes necessary to
restore the DC reference for the signal. This is accomplished
with a DC-restore system applied between the capacitive
"AC" coupling and the input of the device. Refer to
Application Circuit for reference DC-restore solution.
Disable/Power-Down
The ISL59830 can be disabled and placed its output in a
high impedance state. The turn-off time is around 25ns and
the turn-on time is around 200ns. When disabled, the
amplifier's supply current is reduced to 30μA typically,
thereby effectively eliminating the power consumption. The
amplifier's power-down can be controlled by standard TTL or
CMOS signal levels at the ENABLE pin. The applied logic
signal is relative to V
S
- pin. Letting the ENABLE pin float or
applying a signal that is less than 0.8V above V
S
- will enable
the amplifier. The amplifier will be disabled when the signal
at ENABLE pin is 2V above V
S
-.
Output Drive Capability
The ISL59830 does not have internal short-circuit protection
circuitry. A short-circuit current of 80mA sourcing and 150mA
sinking for the output is connected to half way between the
rails with a 10
resistor. If the output is shorted indefinitely,
the power dissipation could easily increase such that the part
will be destroyed. Maximum reliability is maintained if the
output current never exceeds ±40mA, after which the
electro-migration limit of the process will be exceeded and
the part will be damaged. This limit is set by the design of the
internal metal interconnections.
Power Dissipation
With the high output drive capability of the ISL59830, it is
possible to exceed the 150°C absolute maximum junction
temperature under certain load current conditions.
Therefore, it is important to calculate the maximum junction
temperature for an application to determine if load conditions
or package types need to be modified to assure operation of
the amplifier in a safe operating area.
The maximum power dissipation allowed in a package is
determined according to:
Where:
T
JMAX
= Maximum junction temperature
T
AMAX
= Maximum ambient temperature
Θ
JA
= Thermal resistance of the package
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or:
for sourcing:
for sinking:
Where:
V
S
= Supply voltage
I
SMAX
= Maximum quiescent supply current
V
OUT
= Maximum output voltage of the application
R
LOAD
= Load resistance tied to ground
I
LOAD
= Load current
By setting the two P
DMAX
equations equal to each other, we
can solve the output current and R
LOAD
to avoid the device
overheat.
Power Supply Bypassing and Printed Circuit
Board Layout
Strip line design techniques are recommended for the input
and output signal traces. As with any high frequency device,
a good printed circuit board layout is necessary for optimum
performance. Lead lengths should be as short as possible.
The power supply pin must be well bypassed to reduce the
risk of oscillation. For normal single supply operation, where
the V
S
- pin is connected to the ground plane, a single 4.7μF
tantalum capacitor in parallel with a 0.1μF ceramic capacitor
from V
S
+ to GND will suffice. This same capacitor
combination should be placed at each supply pin to ground if
split-internal supplies are to be used. In this case, the V
S
-
pin becomes the negative supply rail.
For good AC performance, parasitic capacitance should be
kept to a minimum. Use of wire-wound resistors should be
avoided because of their additional series inductance. Use
of sockets should also be avoided if possible. Sockets add
parasitic inductance and capacitance can result in
compromised performance. Minimizing parasitic capacitance
at the amplifier's inverting input pin is also very important.
PD
MAX
T
--------------------------------------------
T
JA
–
=
PD
MAX
V
S
I
SMAX
V
S
V
OUT
i
–
(
)
+
×
V
i
L
-----------------
×
=
PD
MAX
V
S
I
SMAX
V
OUT
i
V
S
–
(
)
+
×
I
LOAD
i
×
=
ISL59830
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL59830IA-EVAL | 制造商:Intersil Corporation 功能描述:TRUE SGL SUPPLY VID DRVR - Bulk |
| ISL59830IA-T13 | 功能描述:IC VID DRIVER TRUE SGL 16-QSOP RoHS:否 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:TFT-LCD 面板：VCOM 驱动器 输出类型:满摆幅 电路数:1 -3db带宽:35MHz 转换速率:40 V/µs 电流 - 电源:3.7mA 电流 - 输出 / 通道:1.3A 电压 - 电源，单路/双路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-uMax-EP 包装:管件 |
| ISL59830IA-T7 | 功能描述:IC VID DRIVER TRUE SGL 16-QSOP RoHS:否 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:TFT-LCD 面板：VCOM 驱动器 输出类型:满摆幅 电路数:1 -3db带宽:35MHz 转换速率:40 V/µs 电流 - 电源:3.7mA 电流 - 输出 / 通道:1.3A 电压 - 电源，单路/双路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-uMax-EP 包装:管件 |
| ISL59830IAZ | 功能描述:IC DRIVER VIDEO SGL 3.3V 16QSOP RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 视频放大器和频缓冲器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:TFT-LCD 面板：VCOM 驱动器 输出类型:满摆幅 电路数:1 -3db带宽:35MHz 转换速率:40 V/µs 电流 - 电源:3.7mA 电流 - 输出 / 通道:1.3A 电压 - 电源，单路/双路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-uMax-EP 包装:管件 |
| ISL59830IAZ-EVAL | 制造商:Intersil Corporation 功能描述:TRUE SGL SUPPLY VID DRVR - Bulk 制造商:Intersil Corporation 功能描述:BOARD EVAL FOR ISL59830 制造商:Intersil 功能描述:ISL90843W LW NOISE LW PWR I2C BUS 256 |
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