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參數(shù)資料
| 型號： | ISL59830IAZ-T7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | True Single Supply Video Driver |
| 中文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PDSO16 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, PLASTIC, QSOP-16 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大小： | 333K |
| 代理商： | ISL59830IAZ-T7 |
11
FN7489.6
May 4, 2006
exponentially modulated by the magnitude of the open loop
gain, output impedance increases with frequency as the
open loop gain decreases with frequency. This inductive-like
effect of the output impedance is countered in the ISL59830
with proprietary output stage topology, keeping the output
impedance low over a wide frequency range and making it
possible to easily and effectively drive relatively heavy
capacitive loads.(See Figure 11).
The Charge Pump
The ISL59830 charge pump provides a bottom rail up to
1.65V below ground while operating on a 0V to 3.3V power
supply. The charge pump is internally regulated to one-half
the potential of the positive supply. This internal multi-phase
charge pump is driven by a 160MHz differential ring
oscillator driving a series of inverters and charge storage
circuitry. Each series inverter charges and places parallel
adjoining charge circuitry slightly out of phase with the
immediately preceding block. The overall effect is sequential
discharge and generation of a very low ripple of about 10mV
that is applied to the amplifiers providing a negative rail of up
to -1.65V.
There are two options to reduce the output supply noise.
Add a 120
Ω
bead in series between V
CC
and DV
CC
to
further reduce ripple.
Add a 20pF capacitor between the back load 75
Ω
resistor
and ground (see the ISL59830A + DC-Restore Solution
schematic on page 10).
The system operates at sufficiently high frequencies that any
related charge pump noise is far beyond standard video
bandwidth requirements. Still, appropriate bypassing
discipline must be observed, and all pins related to either the
power supply or the charge pump must be properly
bypassed. See "Power Supply Bypassing and Printed Circuit
Board Layout" in this section.
To maximize resistance to latch-up, a diode should be added
between the VEEOUT pin (anode) and GND (cathode), as
shown in the Demo Board Schematic. This prevents VEE
from rising more than 0.7V above ground during startup.
(VEE > 1V above GND can cause latchup under some
conditions.)
I
N
+
I
N
-
BIAS
OUT
FIGURE 27.
V
TIME (20ns/DIV)
FIGURE 28. CHARGE PUMP OSCILLATION (AMP OUTPUT)
ISL59830
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL59831 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Single Supply Video Driver with Reconstruction Filter and Charge Pump |
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| ISL59831IRTZ-T7 | 功能描述:顯示驅動器和控制器 ISL90843W LW NOISE LW PWR I2C BUS 256 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| ISL59832 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Dual Channel, Single Supply Video Reconstruction Filter with Charge Pump |
| ISL59832IRZ | 功能描述:IC VIDEO FILTER CHRG PUMP 16TQFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 應用:TFT-LCD 面板：VCOM 驅動器 輸出類型:滿擺幅 電路數(shù):1 -3db帶寬:35MHz 轉換速率:40 V/µs 電流 - 電源:3.7mA 電流 - 輸出 / 通道:1.3A 電壓 - 電源，單路/雙路(±):9 V ~ 20 V，±4.5 V ~ 10 V 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 供應商設備封裝:8-uMax-EP 包裝:管件 |
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