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參數(shù)資料
| 型號： | LTC6911IMS-2#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PGA DIGITAL R-R DUAL 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 可編程增益 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 16 V/µs |
| 增益帶寬積： | 11MHz |
| 電壓 - 輸入偏移： | 2000µV |
| 電流 - 電源： | 3.1mA |
| 電流 - 輸出 / 通道： | 35mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 10.5 V，±2.7 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
LTC6911-1/LTC6911-2
17
sn691112 691112fs
Construction and Instrumentation Cautions
Electrically clean construction is important in applications
seeking the full dynamic range of the LTC6911 family of
dual amplifiers. It is absolutely critical to have AGND either
AC bypassed or wired directly, using the shortest possible
wiring, to a low impedance ground return for best channel-
to-channel isolation. Short, direct wiring will minimize
parasitic capacitance and inductance. High quality supply
bypass capacitors of 0.1
F near the chip provide good
decoupling from a clean, low inductance power source.
But several cm of wire (i.e., a few microhenrys of induc-
tance) from the power supplies, unless decoupled by
substantial capacitance (>10
F) near the chip, can create
a high-Q LC resonance in the hundreds of kHz in the chip’s
supplies or ground reference. This may impair circuit
performance at those frequencies. A compact, carefully
laid out printed circuit board with a good ground plane
makes a significant difference in minimizing distortion and
maximizing channel isolation. Finally, equipment to mea-
sure amplifier performance can itself add to distortion or
noise floors. Checking for these limits with wired shorts
from INA to OUTA and INB to OUTB in place of the chip is
a prudent routine procedure.
APPLICATIO S I FOR ATIO
WU
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