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參數(shù)資料
| 型號(hào)： | EL9202ILZ |
| 廠商： | INTERSIL CORP |
| 元件分類(lèi)： | 音頻／視頻放大 |
| 英文描述： | Programmable VCOM |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, QCC24 |
| 封裝： | ROHS COMPLIANT, MO-220, QFN-24 |
| 文件頁(yè)數(shù)： | 12/14頁(yè) |
| 文件大?。?/td> | 468K |
| 代理商： | EL9202ILZ |
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12
FN7438.0
April 7, 2005
Non-Volatile Memory (EEPROM)
Programming
When the CTL pin exceeds 4.9V, the non-volatile
programming cycle will be activated. The CTL signal needs
to remain above 4.9V for more than 200μs. The level and
timing needed to program the non-volatile memory is given
below. It then takes a maximum of 100ms for the
programming to be completed inside the device (see P
T
specification in Electrical Specification Table).
FIGURE 28. EEPROM PROGRAMMING
Amplifiers’ Operating Voltage, Input, and Output
The amplifiers are specified with a single nominal supply
voltage from 5V to 15V or a split supply with its total range
from 5V to 15V. Correct operation is guaranteed for a supply
range of 4.5V to 16.5V. Most amplifier specifications are
stable over both the full supply range and operating
temperatures of -40°C to +85°C. Parameter variations with
operating voltage and/or temperature are shown in the
typical performance curves.
The input common-mode voltage range of the amplifiers
extends 500mV beyond the supply rails. The output swings
of the those typically extend to within 100mV of positive and
negative supply rails with load currents of 5mA. Decreasing
load currents will extend the output voltage range even
closer to the supply rails. Figure 27 shows the input and
output waveforms for the device in the unity-gain
configuration. Operation is from 5V supply with a 1k
load
connected to GND. The input is a 10V
P-P
sinusoid. The
output voltage is approximately 9.8V
P-P
.
FIGURE 29. OPERATION WITH RAIL-TO-RAIL INPUT AND
OUTPUT
Short-Circuit Current Limit
The amplifiers will limit the short circuit current to ±180mA if
the output is directly shorted to the positive or the negative
supply. If an output is shorted indefinitely, the power
dissipation could easily increase such that the device may
be damaged. Maximum reliability is maintained if the output
continuous current never exceeds ±65mA. This limit is set by
the design of the internal metal interconnects.
Output Phase Reversal
The amplifiers are immune to phase reversal as long as the
input voltage is limited from V
S
- -0.5V to V
S
+ +0.5V. Figure
28 shows a photo of the output of the device with the input
voltage driven beyond the supply rails. Although the device's
output will not change phase, the input's over-voltage should
be avoided. If an input voltage exceeds supply voltage by
more than 0.6V, electrostatic protection diodes placed in the
input stage of the device begin to conduct and over-voltage
damage could occur.
FIGURE 30. OPERATION WITH BEYOND-THE-RAILS INPUT
Unused Amplifiers
It is recommended that any unused amplifiers in a dual and
a quad package be configured as a unity gain follower. The
inverting input should be directly connected to the output
and the non-inverting input tied to the ground plane.
Power Supply Bypassing and Printed Circuit
Board Layout
The amplifiers can provide gain at high frequency. As with
any high-frequency device, good printed circuit board layout
is necessary for optimum performance. Ground plane
construction is highly recommended, lead lengths should be
as short as possible and the power supply pins must be well
bypassed to reduce the risk of oscillation. For normal
operation a 0.1μF ceramic capacitor should be placed from
V
S
to pin to GND. A 4.7μF tantalum capacitor should then be
connected in parallel, placed in the region of the amplifier.
CTL
PT
TIME
4.9V
CTL VOLTAGE
O
I
5V
5V
10μs
A
V
=1
V
S
=5V
T
A
=25°C
V
IN
=10V
P-P
1V
1V
10μs
V
S
=2.5V
A
V
=1
T
A
=25°C
V
IN
=6V
P-P
EL9200, EL9201, EL9202
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