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| 型號(hào)： | LT6600IS8-15#PBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 2/12頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP DIFF LP FLTR 15MHZ 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 放大器類(lèi)型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類(lèi)型： | 差分 |
| 電流 - 輸入偏壓： | 35µA |
| 電壓 - 輸入偏移： | 10000µV |
| 電流 - 電源： | 38mA |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 11 V，±1.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SO |
| 包裝： | 管件 |
LT6600-15
10
660015fb
APPLICATIONS INFORMATION
Noise
The noise performance of the LT6600-15 can be evaluated
with the circuit of Figure 7.
Given the low noise output of the LT6600-15 and the
6dB attenuation of the transformer coupling network, it
is necessary to measure the noise oor of the spectrum
analyzer and subtract the instrument noise from the lter
noise measurement.
Example: With the IC removed and the 25Ω resistors
grounded, Figure 7, measure the total integrated noise (eS)
of the spectrum analyzer from 10kHz to 15MHz. 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 1MHz 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:
eIN =
(eO)
2 –(e
S )
2
A
Table 1 lists the typical input referred integrated noise for
various values of RIN.
Figure 8 is plot of the noise spectral density as a func-
tion of frequency for an LT6600-15 using the xture of
Figure 7 (the instrument noise has been subtracted from
the results).
Table 1. Noise Performance
PASSBAND
GAIN (V/V)
RIN
INPUT REFERRED
INTEGRATED NOISE
10kHz TO 15MHz
INPUT REFERRED
INTEGRATED NOISE
10kHz TO 30MHz
4
133Ω
36μVRMS
51μVRMS
2
267Ω
62μVRMS
92μVRMS
1
536Ω
109μVRMS
169μVRMS
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 LT6600-15 ampliers combine high speed with large-
signal currents in a small package. There is a need to
ensure that the die junction temperature does not exceed
150°C. The LT6600-15 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
total of 660 square millimeters connected to Pin 6 of the
LT6600-15 (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 the
V– pin to provide a heat sink, the thermal resistance will
be around 105°C/W. Table 2 can be used as a guide when
considering thermal resistance.
Figure 7
Figure 8. Input Referred Noise, Gain = 1
–
+
0.1μF
2.5V
–2.5V
–
+
LT6600-15
3
4
1
7
2
8
5
6
RIN
25Ω
660015 F07
SPECTRUM
ANALYZER
INPUT
50Ω
VIN
COILCRAFT
TTWB-1010
1:1
FREQUENCY (MHz)
10
NOISE
DENSIT
Y
(nV
RMS
/√
Hz
)
INTEGRA
TED
NOISE
(μ
V)
20
25
35
45
40
0.01
1
10
100
660015 F08
0
0.1
30
15
5
40
80
100
140
180
160
0
120
60
20
NOISE DENSITY,
GAIN = 1x
NOISE DENSITY,
GAIN = 4x
INTEGRATED NOISE,
GAIN = 1x
INTEGRATED NOISE,
GAIN = 4x
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT6600IS8-15-TR | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Very Low Noise, Differential Amplifi er and 15MHz Lowpass Filter |
| LT6600IS8-15-TRPBF | 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:Very Low Noise, Differential Amplifi er and 15MHz Lowpass Filter |
| LT6600IS8-2.5 | 功能描述:IC AMP DIFF LP FLTR 2.5MHZ 8SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:J-FET 電路數(shù):2 輸出類(lèi)型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT6600IS8-2.5#PBF | 功能描述:IC AMP DIFF LP FLTR 2.5MHZ 8SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:J-FET 電路數(shù):2 輸出類(lèi)型:- 轉(zhuǎn)換速率:3.5 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:30pA 電壓 - 輸入偏移:2000µV 電流 - 電源:200µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:通孔 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-PDIP 包裝:管件 |
| LT6600IS8-2.5#TR | 功能描述:IC AMP DIFF LP FLTR 2.5MHZ 8SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:73 系列:Over-The-Top® 放大器類(lèi)型:通用 電路數(shù):4 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:0.07 V/µs 增益帶寬積:200kHz -3db帶寬:- 電流 - 輸入偏壓:1nA 電壓 - 輸入偏移:285µV 電流 - 電源:50µA 電流 - 輸出 / 通道:25mA 電壓 - 電源，單路/雙路(±):2 V ~ 44 V，±1 V ~ 22 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:16-DFN-EP（5x3） 包裝:管件 |
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