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| 型号： | LT6600IS8-2.5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF LP FLTR 2.5MHZ 8SOIC |
| 标准包装： | 100 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 差分 |
| 电流 - 输入偏压： | 15µA |
| 电压 - 输入偏移： | 5000µV |
| 电流 - 电源： | 28mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 11 V，±1.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
LT6600-2.5
11
660025fe
APPLICATIONS INFORMATION
Noise
The noise performance of the LT6600-2.5 can be evaluated
with the circuit of Figure 6.
Given the low noise output of the LT6600-2.5 and the 6dB
attenuation of the transformer coupling network, it will
be necessary to measure the noise oor of the spectrum
analyzer and subtract the instrument noise from the lter
noise measurement.
Figure 7 is plot of the noise spectral density as a function
of frequency for an LT6600-2.5 with RIN = 1580Ω using
the xture of Figure 6 (the instrument noise has been
subtracted from the results).
The noise at each output is comprised of a differential
component and a common mode component. Using a
transformer or combiner to convert the differential outputs
to single-ended signal rejects the common mode noise and
gives a true measure of the S/N achievable in the system.
Conversely, if each output is measured individually and the
noise power added together, the resulting calculated noise
level will be higher than the true differential noise.
Power Dissipation
The LT6600-2.5 ampliers combine high speed with large-
signal currents in a small package. There is a need to
ensure that the die’s junction temperature does not exceed
150°C. The LT6600-2.5 S8 package has Pin 6 fused to the
lead frame to enhance thermal conduction when connect-
ing to a ground plane or a large metal trace. Metal trace
and plated through-holes can be used to spread the heat
generated by the device to the backside of the PC board.
For example, on a 3/32" FR-4 board with 2oz copper, a
totalof 660 square millimeters connected to Pin 6 of the
LT6600-2.5 S8 (330 square millimeters on each side of
the PC board) will result in a thermal resistance, θJA, of
about 85°C/W. Without the extra metal trace connected to
Figure 7. Input Referred Noise, Gain = 1
FREQUENCY (MHz)
0.01
0
30
40
50
0.1
1
10
660025 F07
20
10
0
60
80
100
40
20
NOISE
SPECTRAL
DENSIT
Y
(nV
RMS
/√
Hz
)
INTEGRA
TED
NOISE
(μ
V
RMS
)
SPECTRAL DENSITY
INTEGRATED
Figure 6. (S8 Pin Numbers)
–
+
0.1μF
2.5V
–2.5V
–
+
LT6600-2.5
3
4
1
7
2
8
5
6
RIN
25Ω
660025 F06
SPECTRUM
ANALYZER
INPUT
50Ω
VIN
COILCRAFT
TTWB-1010
1:1
Example: With the IC removed and the 25Ω resistors-
grounded, Figure 6, measure the total integrated noise (eS)
of the spectrum analyzer from 10kHz to 2.5MHz. With the
IC inserted, the signal source (VIN) disconnected, and the
input resistors grounded, measure the total integrated noise
out of the lter (eO). With the signal source connected, set
the frequency to 100kHz and adjust the amplitude until
VIN measures 100mVP-P. Measure the output amplitude,
VOUT, and compute the passband gain A = VOUT/VIN. Now
compute the input referred integrated noise (eIN) as:
e
IN =
(e
O )
2 –(e
S )
2
A
Table 2 lists the typical input referred integrated noise for
various values of RIN.
Table 2. Noise Performance
PASSBAND
GAIN (V/V)
RIN
INPUT REFERRED
INTEGRATED NOISE
10kHz TO 2.5MHz
INPUT REFERRED
INTEGRATED NOISE
10kHz TO 5MHz
4
402Ω
18μVRMS
23μVRMS
2
806Ω
29μVRMS
39μVRMS
1
1580Ω
51μVRMS
73μVRMS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT6600IS8-5 | 制造商:Linear Technology 功能描述:Differential Amplifier and Low Pass Filter 8-Pin SOIC N |
| LT6600IS8-5#PBF | 功能描述:IC AMP DIFF LP FLTR 5MHZ 8-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| LT6600IS8-5#TRPBF | 功能描述:IC AMP DIFF LP FLTR 5MHZ 8-SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:73 系列:Over-The-Top® 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.07 V/µs 增益带宽积:200kHz -3db带宽:- 电流 - 输入偏压:1nA 电压 - 输入偏移:285µV 电流 - 电源:50µA 电流 - 输出 / 通道:25mA 电压 - 电源，单路/双路(±):2 V ~ 44 V，±1 V ~ 22 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WFDFN 裸露焊盘 供应商设备封装:16-DFN-EP（5x3） 包装:管件 |
| LT6600IS8-5-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Very Low Noise, Differential Amplifi er and 5MHz Lowpass Filter |
| LT6600IS8-5-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Very Low Noise, Differential Amplifi er and 5MHz Lowpass Filter |
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