- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄5956 > LT6402IUD-12#TRPBF (Linear Technology)IC DIFF AMP/ADC DVR 12DB 16-QFN PDF資料下載
參數(shù)資料
| 型號： | LT6402IUD-12#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DIFF AMP/ADC DVR 12DB 16-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 2 |
| 輸出類型： | 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 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-QFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
13
640212fa
LT6402-12
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
solution of 14pF from each ltered output to ground plus
a 14pF capacitor between the ltered outputs would also
halve the lter bandwidth (Figure 7).
Bandpass ltering is also easily implemented with just a
few external components. An additional 560pF and 62nH,
each added differentially between +OUTFILTERED and
–OUTFILTERED creates a bandpass lter with a 26MHz
center frequency, –3dB points of 23MHz and 30MHz, and
1.6dB of insertion loss (Figure 8).
Output Common Mode Adjustment
The LT6402-12’s output common mode voltage is set by the
VOCM pin. It is a high-impedance input, capable of setting
the output common mode voltage anywhere in a range
from 1.1V to 3.6V. Bandwidth of the VOCM pin is typically
200MHz, so for applications where the VOCM pin is tied to
a DC bias voltage, a 0.1μF capacitor at this pin is recom-
mended. For best distortion performance, the voltage at
the VOCM pin should be between 1.2V and 2.6V.
When interfacing with most ADCs, there is generally a
VOCM output pin that is at about half of the supply voltage
of the ADC. For 5V ADCs such as the LTC17XX family, this
VOCM output pin should be connected directly (with the
addition of a 0.1μF capacitor) to the input VOCM pin of the
LT6402-12. For 3V ADCs such as the LTC22XX families,
the LT6402-12 will function properly using the 1.65V from
the ADC’s VCM reference pin, but improved Spurious Free
Dynamic Range (SFDR) and distortion performance can
be achieved by level-shifting the LTC22XX’s VCM reference
voltage up to at least 1.8V. This can be accomplished as
shown in Figure 9 by using a resistor divider between the
LTC22XX’s VCM output pin and VCC and then bypassing
the LT6402-12’s VOCM pin with a 0.1μF capacitor. For a
common mode voltage above 1.9V, AC coupling capacitors
are recommended between the LT6402-12 and LTC22XX
ADCs because of the input voltage range constraints of
the ADC.
Figure 7. LT6402-12 Internal Filter Topology Modied
for 1/2x Filter Bandwidth (3 External Capacitors)
Figure 8. LT6402-12 Output Filter Modied for Bandpass
Filtering (1 External Inductor, 1 External Capacitor)
Figure 9. Level Shifting 3V ADC VCM Voltage for
Improved SFDR
APPLICATIONS INFORMATION
VEE
640212 F07
50Ω
14pF
LT6402-12
–OUT
+OUT
50Ω
14pF
–OUTFILTERED
+OUTFILTERED
8
7
6
5
FILTERED OUTPUT
(37.5MHz)
VEE
640212 F08
50Ω
14pF
LT6402-12
–OUT
+OUT
50Ω
14pF
–OUTFILTERED
+OUTFILTERED
8
7
6
5
FILTERED OUTPUT
640212 F09
IF IN
LT6402-12
–INA
–INB
VOCM
2
31
6
7
1
2
+INB
+INA
14
13
15
150Ω
16
10Ω
LTC22xx
0.1μF
+OUTFILTERED
–OUTFILTERED
AIN+
AIN–
4.02k
11k
1.9V
1.5V
3V
VCM
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMM-110-01-G-D-SM | CONN HEADER 20POS DUAL 2MM SMD |
| SSQ-140-02-S-S-RA | CONN RCPT .100" 40POS R/A SGL AU |
| SSQ-141-02-S-S-RA | CONN RCPT .100" 41POS R/A SGL AU |
| SSQ-142-02-S-S-RA | CONN RCPT .100" 42POS R/A SGL AU |
| 1-322325-1 | CONN SPLICE BUTT 22-16AWG GRAY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT6402IUD-20 | 制造商:LINER 制造商全稱: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:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 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:- |
| LT6402IUD-20#TRPBF | 功能描述:IC DIFF AMP/ADC DRVR 16-QFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| LT6402IUD-6 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:300MHz Low Distortion, Low Noise Differential Amplifi er/ ADC Driver (AV = 6dB) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。