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參數(shù)資料
| 型號(hào)： | ADD8709ASTZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 18-Channel Gamma Buffer with Regulator |
| 中文描述： | 18 BUFFER AMPLIFIER, PQFP48 |
| 封裝： | LEAD FREE, MO-026-BBC, LQFP-48 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大小： | 488K |
| 代理商： | ADD8709ASTZ-REEL7 |
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ADD8709
APPLICATION NOTES
MAXIMUM POWER DISSIPATION
The maximum safe power dissipation in the ADD8709 package
is limited by the associated rise in junction temperature (T
J
)
on the die. At approximately 150°C, the glass transition temper-
ature, the properties of the plastic change. Even temporarily
exceeding this temperature limit may change the stresses that
the package exerts on the die, permanently shifting the para-
metric performance of the ADD8709. Exceeding a junction
temperature of 175°C for an extended period can result in
changes in the silicon devices, potentially causing failure.
Rev. 0 | Page 12 of 16
OPERATING TEMPERATURE RANGE
The maximum junction temperature is as follows:
T
J
=
T
AMB MAX
+
θ
JA
×
W
MAX
where:
T
AMB MAX
= maximum ambient temperature specified on the data
sheet.
θ
JA
= junction-to-ambient thermal resistance, in °C/watt.
W
MAX
= maximum power dissipated in the device, in watts.
For the ADD8709,
W
MAX
can be calculated with the following
equation:
W
MAX
=
V
DD
×
I
SYS
+
V
OUT
×
I
OUT
+
V
DO
×
I
O
where:
V
DD
×
I
SYS
= nominal system power requirements
V
OUT
×
I
OUT
= amplifier load power dissipation
V
DO
×
I
O
= regulator load power dissipation
Example 1
The estimated power consumption of the ADD8709 in extreme
cases is as follows:
V
DD
× I
SYS
= 15 V × 15 mA
V
OUT
× I
OUT
= (8 V × 5 mA/channel) × 18 channels
V
DO
× I
O
= 0.6 V × 5 mA
W
MAX
= (15 V × 15 mA) + (8 V × 5 mA/channel ×
18 channel) + (0.6 V × 5 mA) = 0.948 W
θ
JA
= 74.57°C/W,
T
AMB MAX
= 45°C
T
J
= 45°C + (74.57°C/W) × (0.948 W) = 115.7°C
Here, 150°C is the maximum junction temperature that is
guaranteed before the part breaks down, while 125°C is the
maximum process limit. Because
T
J
is < 150°C and < 125°C,
this example demonstrates a condition where the part should
perform within process limits.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADD8709WSTZ-REEL7 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADD8710 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:10 - CHANNEL GAMMA BUFFER WITH V-COM DRIVER |
| ADD8710ARUZ | 功能描述:IC GAMMA BUFFER 10CH DRV 28TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類(lèi)型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類(lèi)型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) |
| ADD8710ARUZ-REEL | 功能描述:IC GAMMA BUFFER 10CH DRV 28TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 放大器 - 視頻放大器和頻緩沖器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:驅(qū)動(dòng)器 輸出類(lèi)型:差分 電路數(shù):3 -3db帶寬:350MHz 轉(zhuǎn)換速率:1000 V/µs 電流 - 電源:14.5mA 電流 - 輸出 / 通道:60mA 電壓 - 電源，單路/雙路(±):5 V ~ 12 V，±2.5 V ~ 6 V 安裝類(lèi)型:表面貼裝 封裝/外殼:20-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:20-QFN 裸露焊盤(pán)（4x4） 包裝:帶卷 (TR) |
| ADD8733 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Integrated TFT Panel Power Supply with Gate Modulation and VCOM |
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