參數(shù)資料
型號(hào)： LT6402IUD-12#PBF
廠(chǎng)商： Linear Technology
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 0K
描述： IC DIFF AMP/ADC DRVR 16-QFN
標(biāo)準(zhǔn)包裝： 121
放大器類(lèi)型： 差分
電路數(shù)： 2
輸出類(lèi)型： 差分
轉(zhuǎn)換速率： 400 V/µs
-3db帶寬： 300MHz
電流 - 輸入偏壓： 5µA
電壓 - 輸入偏移： 1000µV
電流 - 電源： 30mA
電流 - 輸出 / 通道： 35mA
電壓 - 電源，單路/雙路(±)： 4 V ~ 5.5 V，±2 V ~ 2.5 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 16-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 16-QFN-EP（3x3）
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1322 (CN2011-ZH PDF)
11
640212fa
LT6402-12
The LT6402-12 has been designed to minimize the need
for external support components such as transformers or
AC-coupling capacitors. As an ADC driver, the LT6402-12
requires no external components except for power-supply
bypass capacitors. This allows DC-coupled operation for
applications that have frequency ranges including DC. At
the outputs, the common mode voltage is set via the VOCM
pin, allowing the LT6402-12 to drive ADCs directly. No
output AC-coupling capacitors or transformers are needed.
At the inputs, signals can be differential or single-ended
with virtually no difference in performance. Furthermore,
DC levels at the inputs can be set independently of the
output common mode voltage. These input characteristics
often eliminate the need for an input transformer and/or
AC-coupling capacitors.
Input Impedance and Matching Networks
Calculation of the input impedance of the LT6402-12 is
not straightforward from examination of the block diagram
because of the internal feedback network. In addition, the
input impedance when driven differentially is different than
when driven single-ended.
DIFFERENTIAL
SINGLE-ENDED
LT6402-12
100Ω
75Ω
For single-ended 50Ω applications, a 150Ω shunt match-
ing resistor to ground will result in the proper input
termination (Figure 1). For differential inputs there are
several termination options. If the input source is 50Ω
differential, then the input matching can be accomplished
by either a 67Ω shunt resistor across the inputs (Figure 3),
or equivalent 33Ω shunt resistors on each of the inputs
to ground (Figure 2). If additional AC gain is desired, an
Figure 1. Input Termination for Single-Ended
50Ω Input Impedance
impedance ratio transformer can also be used to better
match impedances.
Single-Ended to Differential Operation
The LT6402-12’s performance with single-ended inputs
is comparable to its performance with differential inputs.
This excellent single-ended performance is largely due
to the internal topology of the LT6402-12. Referring to
the block diagram, if the +INA and +INB pins are driven
with a single-ended signal (while –INA and –INB are tied
to AC ground), then the +OUT and –OUT pins are driven
differentially without any voltage swing needed from
amplier C. Single-ended to differential conversion using
more conventional topologies suffers from performance
limitations due to the common mode amplier.
Driving ADCs
The LT6402-12 has been specically designed to interface
directly with high speed Analog to Digital Converters
(ADCs). In general, these ADCs have differential inputs, with
an input impedance of 1kΩ or higher. In addition, there is
generally some form of lowpass or bandpass ltering just
Figure 3. Alternate Input Termination for Differential
50Ω Input Impedance
Figure 2. Input Termination for Differential 50Ω Input Impedance
APPLICATIONS INFORMATION
640212 F01
IF IN
0.1μF
LT6402-12
–INA
–INB
–OUT
+OUT
8
5
+INB
+INA
14
13
15
150Ω
ZIN = 50Ω
SINGLE-ENDED
16
640212 F02
IF IN–
IF IN+
LT6402-12
–INA
–INB
–OUT
+OUT
8
5
+INB
+INA
14
13
15
49.9Ω
ZIN = 50Ω
DIFFERENTIAL
16
49.9Ω
640212 F03
IF IN–
IF IN+
LT6402-12
–INA
–INB
–OUT
+OUT
8
5
+INB
+INA
14
13
15
ZIN = 50Ω
DIFFERENTIAL
16
100Ω
相關(guān)PDF資料
PDF描述
PEC25DBEN CONN HEADER .100 DUAL R/A 50POS
PEC32DAFN CONN HEADER .100 DUAL STR 64POS
929715-10-19-I CONN HEADER .100 DUAL STR 38POS
AD8676ARMZ IC OPAMP GP R-R 10MHZ DUAL 8MSOP
3413.0113.22 FUSE 500MA 125V FAST 1206 SMD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT6402IUD-12-TR 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 12dB)
LT6402IUD-12-TRPBF 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 12dB)
LT6402IUD-20 制造商:LINER 制造商全稱(chēng):Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifier/ ADC Driver (AV = 20dB)
LT6402IUD-20#PBF 功能描述:IC DIFF AMP/ADC DRVR 16-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿(mǎn)擺幅 轉(zhuǎn)換速率:350 V/µs 增益帶寬積:180MHz -3db帶寬:320MHz 電流 - 輸入偏壓:12.5µA 電壓 - 輸入偏移:800µV 電流 - 電源:15mA 電流 - 輸出 / 通道:85mA 電壓 - 電源，單路/雙路(±):2.5 V ~ 12.6 V，±1.25 V ~ 6.3 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MSOP 包裝:帶卷 (TR)
LT6402IUD-20#TR 制造商:Linear Technology 功能描述:DIFF-AMPLIFIER, 300MHZ, 400V/US, QFN-16, No. of Amplifiers:1, Input Offset Voltage:1mV, Gain dB Max:20dB, Bandwidth:300MHz, Amplifier Case Style:QFN, No. of Pins:16, Supply Voltage Range:4V to 5.5V, Slew Rate:400V/s, MSL:-
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*