- 您現在的位置：買賣IC網 > PDF目錄98220 > THS3001IDRG4 (TEXAS INSTRUMENTS INC) 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 PDF資料下載
參數資料
| 型號： | THS3001IDRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 11/38頁 |
| 文件大?。?/td> | 875K |
| 代理商： | THS3001IDRG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁當前第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁
www.ti.com................................................................................................................................................. SLOS217H – JULY 1998 – REVISED SEPTEMBER 2009
RECOMMENDED FEEDBACK AND GAIN RESISTOR VALUES
The THS3001 is fabricated using Texas Instruments 30-V complementary bipolar process, HVBiCOM. This
process provides the excellent isolation and extremely high slew rates that result in superior distortion
characteristics.
As with all current-feedback amplifiers, the bandwidth of the THS3001 is an inversely proportional function of the
value of the feedback resistor (see Figures 26 to 34). The recommended resistors for the optimum frequency
response are shown in Table 1. These should be used as a starting point and once optimum values are found,
1% tolerance resistors should be used to maintain frequency response characteristics. For most applications, a
feedback resistor value of 1 k
is recommended - a good compromise between bandwidth and phase margin
that yields a stable amplifier.
Consistent with current-feedback amplifiers, increasing the gain is best accomplished by changing the gain
resistor, not the feedback resistor. This is because the bandwidth of the amplifier is dominated by the feedback
resistor value and internal dominant-pole capacitor. The ability to control the amplifier gain independent of the
bandwidth constitutes a major advantage of current-feedback amplifiers over conventional voltage-feedback
amplifiers. Therefore, once a frequency response is found suitable to a particular application, adjust the value of
the gain resistor to increase or decrease the overall amplifier gain.
Finally, it is important to realize the effects of the feedback resistance on distortion. Increasing the resistance
decreases the loop gain and increases the distortion. It is also important to know that decreasing load impedance
increases total harmonic distortion (THD). Typically, the third-order harmonic distortion increases more than the
second-order harmonic distortion.
Table 1. Recommended Resistor Values for Optimum
Frequency Response
GAIN
RF for VCC = ±15 V
RF for VCC = ±5 V
1
1 k
1 k
2, -1
680
750
2
620
620
5
560
620
OFFSET VOLTAGE
The output offset voltage, (VOO) is the sum of the input offset voltage (VIO) and both input bias currents (IIB) times
the corresponding gains. The following schematic and formula can be used to calculate the output offset voltage:
Figure 48. Output Offset Voltage Model
Copyright 1998–2009, Texas Instruments Incorporated
19
Product Folder Link(s): THS3001
相關PDF資料 |
PDF描述 |
|---|---|
| THS3001HVCDGNRG4 | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| THS3001HVCDGNR | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| THS3001HVCDR | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| THS3001HVCD | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| THS3001HVID | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| THS3001TDA1 | 制造商:Texas Instruments 功能描述:IC OPAMP CFA DIE |
| THS3001TDA2 | 制造商:Texas Instruments 功能描述:IC OPAMP CFA DIE |
| THS3002 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:420-MHz HIGH-SPEED CURRENT-FEEDBACK AMPLIFIERS |
| THS3002CD | 制造商:TI 制造商全稱:Texas Instruments 功能描述:420-MHz HIGH-SPEED CURRENT-FEEDBACK AMPLIFIERS |
| THS3002CDGN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:420-MHz HIGH-SPEED CURRENT-FEEDBACK AMPLIFIERS |
發(fā)布緊急采購，3分鐘左右您將得到回復。