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參數(shù)資料
| 型號： | LTC6400IUD-20#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER DIFF 16-QFN |
| 標準包裝： | 2,500 |
| 類型： | ADC 驅(qū)動器 |
| 應用： | 數(shù)據(jù)采集 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-WFQFN 裸露焊盤 |
| 供應商設備封裝： | 16-QFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
LTC6400-20
13
640020f
1.6V. The bandwidth of VOCM control is typically 15MHz,
which is dominated by a low pass lter connected to the
VOCM pin and is aimed to reduce common mode noise
generation at the outputs. The internal common mode
feedback loop has a –3dB bandwidth around 300MHz,
allowing fast common mode rejection at the outputs of
the LTC6400-20. The VOCM pin should be tied to a DC bias
voltage with a 0.1μF bypass capacitor. When interfacing
with A/D converters such as the LT22xx families, the VOCM
pin can be connected to the VCM pin of the ADC.
Driving A/D Converters
The LTC6400-20 has been specically designed to inter-
face directly with high speed A/D converters. In Figure 7,
an example schematic shows the LTC6400-20 with a
single-ended input driving the LTC2208, which is a 16-bit,
130Msps ADC. Two external 10Ω resistors help eliminate
potential resonance associated with stray capacitance of
PCB traces and bond wires of either the ADC input or
the driver output. VOCM of the LTC6400-20 is connected
to VCM of the LTC2208 VCM pin at 1.25V. Alternatively, a
single-ended input signal can be converted to differential
signal via a balun and fed to the input of the LTC6400-20.
The balun also converts input impedance to match 50Ω
source impedance.
Figure 8 summarizes the spurious free dynamic range
(SFDR) for IMD3 of the whole system in Figure 7.
Test Circuits
Due to the fully-differential design of the LTC6400 and
its usefulness in applications with differing characteristic
Figure 7. Single-Ended Input to LTC6400-20 and LTC2208
Figure 8. SFDR for the Combination of LTC6400-20 and LTC2208
APPLICATIONS INFORMATION
29
Ω
66.5
Ω
0.1
μF
0.1
μF
640020 F07
LTC6400-20
VOCM
ENABLE
IF IN
LTC2208
10
Ω
0.1
μF
LTC2208 130Msps
16-Bit ADC
1.25V
10
Ω
20dB GAIN
AIN–
AIN+
VCM
–IN
+IN
+OUT
+OUTF
–OUTF
–OUT
FREQUENCY (MHz)
70
SFDR
(dB)
94
92
90
88
86
84
82
120
170
220
640020 F08
270
300
Top Silkscreen
specications, two test circuits are used to generate the
information in this datasheet. Test Circuit A is DC987B,
a two-port demonstration circuit for the LTC6400 family.
The schematic and silkscreen are shown below. This
circuit includes input and output transformers (baluns)
for single-ended-to-differential conversion and imped-
ance transformation, allowing direct hook-up to a 2-port
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC6400IUD-26 | 制造商:Linear Technology 功能描述:SC-Amps/High Speed, 3GHz Low Noise/Low Distortion Differential Amp |
| LTC6400IUD-26#PBF | 功能描述:IC ADC DRIVER DIFF 16-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:可變增益放大器 應用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應商設備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LTC6400IUD-26#TRPBF | 功能描述:IC ADC DRIVER DIFF 16-QFN RoHS:是 類別:集成電路 (IC) >> 線性 - 放大器 - 專用 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:60 系列:- 類型:可變增益放大器 應用:CATV 安裝類型:表面貼裝 封裝/外殼:20-WQFN 裸露焊盤 供應商設備封裝:20-TQFN-EP（5x5） 包裝:托盤 |
| LTC6400IUD-26-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz |
| LTC6400IUD-26-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.9GHz Low Noise, Low Distortion Differential ADC Driver for DC-300MHz |
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