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參數(shù)資料
| 型號(hào)： | THS6032DWP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| 中文描述： | 低功耗寬帶局端線路驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 23/31頁 |
| 文件大?。?/td> | 496K |
| 代理商： | THS6032DWP |
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THS6032
LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER
SLOS233C – APRIL1999 – REVISED MARCH 2000
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
slew rate (continued)
Whether the THS6032 is used in an inverting amplifier configuration or a noninverting configuration can impact
the output slew rate. Slew rate performance in the inverting configuration is generally faster than the
noninverting configuration. This is because in the inverting configuration the input terminals of the amplifier are
at a virtual ground and do not significantly change voltage as the input changes. Consequently, the time to
charge any capacitance on these input nodes is less than for the noninverting configuration, where the input
nodes actually do change in voltage an amount equal to the size of the input step. In addition, any PCB parasitic
capacitance on the input nodes degrades the slew rate further simply because there is more capacitance to
charge. If the main supply voltage V
CC(H)
to the amplifier is reduced, slew rate decreases because there is less
current available within the amplifier to charge the capacitance on the input nodes as well as other internal
nodes. Also, as the load resistance decreases, the slew rate typically decreases due to the increasing internal
currents, which slow down the transitions.
Internally, the THS6032 has other factors that impact the slew rate. The amplifier’s behavior during the slew rate
transition varies slightly depending upon the rise time of the input. This is because of the way the input stage
handles faster and faster input edges. Slew rates (as measured at the amplifier output) of less than about
1200 V/
μ
s are processed by the input stage in a very linear fashion. Consequently, the output waveform
smoothly transitions between initial and final voltage levels. For slew rates greater than 1200 V/
μ
s, additional
slew-enhancing transistors present in the input stage (transistors Q5 and Q6 in Figure 44) begin to turn on to
support these faster signals. The result is an amplifier with extremely fast slew rate capabilities. The additional
aberrations present in the output waveform with these faster slewing input signals are due to the brief saturation
of the internal current mirrors. This phenomenon, which typically lasts less than 20 ns, is considered normal
operation and is not detrimental to the device in any way. If for any reason this type of response is not desired,
then increasing the feedback resistor or slowing down the input signal slew rate reduces the effect.
Figure 47
2
0
–4
–6
SLEWING 10 V PULSE
t – Time – ns
0
50
100
150
200
–2
8
6
4
–8
250
SR = 1400 V/
μ
s
VCC(H) =
±
15 V
VCC(L) =
±
5 V
Gain = +5
RF = 1.1 k
RL = 25
TR/TF = 1 ns
–
VO
25
75
125
175
225
Figure 48
4
0
–8
–12
SLEWING 20 V PULSE
t – Time – ns
0
50
100
150
200
–4
16
12
8
–16
250
SR = 4000 V/
μ
s
VCC(H) =
±
15 V
VCC(L) =
±
5 V
Gain = +5
RF = 1.1 k
RL = 25
TR/TF = 1 ns
–
VO
25
75
125
175
225
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6032EVM | 功能描述:放大器 IC 開發(fā)工具 THS6032 Hi-Spd Amp Eval Mods RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V |
| THS6032GQE | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| THS6032GQEEVM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-POWER ADSL CENTRAL-OFFICE LINE DRIVER |
| THS6032IDWP | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low-Pwr ADSL Cent-Office Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| THS6032IDWPG4 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 Low-Pwr ADSL Cent-Office Line Drv RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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