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參數(shù)資料
| 型號： | ISL59833IAZ-T7 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 200MHz Single Supply Video Driver With Charge Pump |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO16 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QSOP-16 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大小： | 344K |
| 代理商： | ISL59833IAZ-T7 |
12
FN6334.1
March 5, 2007
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 ISL59833 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 110MHz 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. This generates a negative rail
of about -1.6V with a low amplitude ripple voltage from the
charge pump action. Some of this ripple is coupled into the
output signals at a very low amplitude, as seen in Figure 22.
The ripple on the outputs is typically well below the noise
floor of the signal.
There are two ways to further reduce the output supply
noise:
Add a 120
Ω
bead in series between V
CC
and DV
CC
. This
reduces the coupling between the charge pump and the
analog amplifier supplies.
Add a 20pF capacitor between the back load 75
Ω
resistor
and ground (see “ISL59833 + DC-Restore Solution” on
page 10). This will attenuate frequencies above 100MHz.
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” on page 14.
I
N
+
I
N
-
BIAS
OUT
FIGURE 27. SIMPLIFIED SCHEMATIC
ISL59833
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| ISL59837IAZ | 功能描述:IC VIDEO DRIVER TRUE SGL 16-QSOP 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(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:TFT-LCD 面板：VCOM 驅(qū)動器 輸出類型:滿擺幅 電路數(shù):1 -3db帶寬:35MHz 轉(zhuǎn)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(yīng)商設(shè)備封裝:8-uMax-EP 包裝:管件 |
| ISL59837IAZ-EVALZ | 功能描述:EVAL BOARD FOR ISL59837IAZ RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:* 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
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