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| 型号： | LT6402CUD-20#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC DIFF AMP/ADC DRVR 16-QFN |
| 标准包装： | 2,500 |
| 放大器类型： | 差分 |
| 电路数： | 2 |
| 输出类型： | 差分 |
| 转换速率： | 400 V/µs |
| -3db带宽： | 300MHz |
| 电流 - 输入偏压： | 5µA |
| 电压 - 输入偏移： | 1000µV |
| 电流 - 电源： | 30mA |
| 电流 - 输出 / 通道： | 35mA |
| 电压 - 电源，单路/双路(±)： | 4 V ~ 5.5 V，±2 V ~ 2.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 带卷 (TR) |
LT6402-20
12
640220fa
APPLICATIO S I FOR ATIO
WU
U
Filtered Applications
(Using the +OUTFILTERED and –OUTFILTERED Pins)
Filtering at the output of the LT6402-20 is often desired
to provide either anti-aliasing or improved signal to noise
ratio. To simplify this ltering, the LT6402-20 includes an
additional pair of differential outputs (+OUTFILTERED and
–OUTFILTERED) which incorporate an internal lowpass
lter network with a –3dB bandwidth of 75MHz (Figure 5).
These pins each have an output impedance of 50Ω. Inter-
nal capacitances are 14pF to VEE on each ltered output,
plus an additional 14pF capacitor connected differentially
between the two ltered outputs. This resistor/capaci-
tor combination creates ltered outputs that look like a
series 50Ω resistor with a 42pF capacitor shunting each
ltered output to AC ground, giving a –3dB bandwidth of
75MHz.
The lter cutoff frequency is easily modied with just a
few external components. To increase the cutoff frequency,
simply add 2 equal value resistors, one between +OUT and
+OUTFILTERED and the other between –OUT and –OUTFIL-
TERED (Figure 6). These resistors are in parallel with the
internal 50Ω resistor, lowering the overall resistance and
increasing lter bandwidth. To double the lter bandwidth,
for example, add two external 50Ω resistors to lower the
series resistance to 25Ω. The 42pF of capacitance remains
unchanged, so lter bandwidth doubles.
To decrease lter bandwidth, add two external capacitors,
one from +OUTFILTERED to ground, and the other from
–OUTFILTERED to ground. A single differential capacitor
connected between +OUTFILTERED and –OUTFILTERED
can also be used, but since it is being driven differentially
it will appear at each ltered output as a single-ended
capacitance of twice the value. To halve the lter band-
width, for example, two 42pF capacitors could be added
(one from each ltered output to ground). Alternatively
one 21pF capacitor could be added between the ltered
outputs, again halving the lter bandwidth. Combinations
of capacitors could be used as well; a three capacitor
Figure 5. LT6402-20 Internal Filter Topology –3dB BW ≈75MHz
Figure 6. LT6402-20 Internal Filter Topology Modied
for 2x Filter Bandwidth (2 External Resistors)
Figure 7. LT6402-20 Internal Filter Topology Modied
for 1/2x Filter Bandwidth (3 External Capacitors)
6402 F05
50
VEE
14pF
LT6402-20
–OUT
+OUT
50
14pF
–OUTFILTERED
+OUTFILTERED
8
7
6
5
FILTERED OUTPUT
(75MHz)
VEE
6402 F06
50
50
14pF
LT6402-20
–OUT
+OUT
50
50
14pF
–OUTFILTERED
FILTERED OUTPUT
(150MHz)
+OUTFILTERED
8
7
6
5
VEE
6402 F07
50
14pF
LT6402-20
–OUT
+OUT
50
14pF
–OUTFILTERED
+OUTFILTERED
8
7
6
5
FILTERED OUTPUT
(37.5MHz)
Figure 8. LT6402-20 Output Filter Modied for Bandpass
Filtering (1 External Inductor, 1 External Capacitor)
VEE
6402 F08
50
14pF
LT6402-20
–OUT
+OUT
50
14pF
–OUTFILTERED
+OUTFILTERED
8
7
6
5
FILTERED OUTPUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT6402CUD-6 | 制造商:LINER 制造商全称:Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 6dB) |
| LT6402CUD-6#PBF | 功能描述:IC DIFF AMP/ADC DVR 6DB 16-QFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:3 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:70µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:Digi-Reel® 其它名称:MAX4475AUT#TG16DKR |
| LT6402CUD-6#TRPBF | 功能描述:IC DIFF AMP/ADC DVR 6DB 16-QFN RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 放大器类型:电流检测 电路数:1 输出类型:- 转换速率:- 增益带宽积:125kHz -3db带宽:- 电流 - 输入偏压:- 电压 - 输入偏移:100µV 电流 - 电源:1.1µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:4-WFBGA，CSPBGA 供应商设备封装:4-UCSP（2x2） 包装:剪切带 (CT) 其它名称:MAX9634WERS+TCT |
| LT6402CUD-6-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 6dB) |
| LT6402CUD-6-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 6dB) |
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