- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361040 > LMH6657 (National Semiconductor Corporation) 270MHz Single Supply, Single & Dual Amplifiers PDF資料下載
參數(shù)資料
| 型號： | LMH6657 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 270MHz Single Supply, Single & Dual Amplifiers |
| 中文描述： | 270MHz單電源，單 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大小： | 788K |
| 代理商： | LMH6657 |
Output Characteristics
(Continued)
with the signal and there is no subsequent ill effects due to
this shift in operating point and the possibility of additional
non-linearity. Moreover, under low closed loop gain settings
(most suited to low distortion), the non-inverting configura-
tion is at a further disadvantage of having to contend with the
input common voltage range. There is also a strong relation-
ship between output loading and distortion performance (i.e.
1k
vs. 100
distortion improves by about 20dB
@
100KHz)
especially at the lower frequency end where the distortion
tends to be lower. At higher frequency, this dependence
diminishes greatly such that this difference is only about 4dB
at 10MHz. But, in general, lighter output load leads to re-
duced HD3 term and thus improves THD.
PRINTED CIRCUIT BOARD LAYOUT AND COMPONENT
VALUES SECTIONS
Generally, a good high frequency layout will keep power
supply and ground traces away from the inverting input and
output pins. Parasitic capacitances on these nodes to
ground will cause frequency response peaking and possible
circuit oscillations (see Application Note OA-15 for more
information). National Semiconductor suggests the following
evaluation boards as a guide for high frequency layout and
as an aid in device testing and characterization:
Device
Package
Evaluation
Board PN
CLC730068
NA
CLC730036
CLC730123
LMH6657MF
LMH6657MG
LMH6658MA
LMH6658MM
SOT23-5
SC-70
8-Pin SOIC
8-Pin MSOP
These free evaluation boards are shipped when a device
sample request is placed with National Semiconductor. An-
other important parameter in working with high speed/high
performance amplifiers, is the component values selection.
Choosing external resistors that are large in value will effect
the closed loop behavior of the stage because of the inter-
action of these resistors with parasitic capacitances. These
capacitors could be inherent to the device or a by-product of
the board layout and component placement. Either way,
keeping the resistor values lower, will diminish this interac-
tion to a large extent. On the other hand, choosing very low
value resistors will load down nodes and will contribute to
higher overall power dissipation.
L
www.national.com
17
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMH6658 | 270MHz Single Supply, Single & Dual Amplifiers |
| LMH6672 | Dual, High Output Current, High Speed Op Amp |
| LMH6672LD | Dual, High Output Current, High Speed Op Amp |
| LMH6672MA | Dual, High Output Current, High Speed Op Amp |
| LMH6672MAX | Dual, High Output Current, High Speed Op Amp |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMH6657MF | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±6V/12V 5-Pin SOT-23 T/R 制造商:Texas Instruments 功能描述:AMP, 3V 270MHZ, POWERWISE, SOT23-5 制造商:Texas Instruments 功能描述:AMP, 3V 270MHZ, POWERWISE, SOT23-5; Op Amp Type:High Speed; No. of Amplifiers:1; Slew Rate:700V/s; Supply Voltage Range:3V to 12V; Amplifier Case Style:SOT-23; No. of Pins:5; Bandwidth:270MHz; Operating Temperature Min:-40C; ;RoHS Compliant: Yes |
| LMH6657MF/NOPB | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMH6657MFX | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMH6657MFX/NOPB | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| LMH6657MG | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。