参数资料
| 型号： | LTC6401CUD-14#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER DIFF 16-QFN |
| 标准包装： | 121 |
| 类型： | ADC 驱动器 |
| 应用： | 数据采集 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 管件 |
| 产品目录页面： | 1322 (CN2011-ZH PDF) |
LTC6401-14
11
640114f
FREQUENCY (MHz)
0
IMD3
(dBc)
–40
–90
–80
–70
–60
–50
–100
–110
20 40 60 80 100 120 140 160 180
640114 F08
200
SINGLE-ENDED INPUT
FS = 122.8Msps
DRIVER VOUT = 2VP-P COMPOSITE
Figure 6. LTC6401-14 Modied 165MHz for Bandpass
Filtering (Three External Capacitors, One External Inductor)
only a few components as shown in Figure 6. Three
39pF capacitors and a 16nH inductor create a bandpass
lter with 165MHz center frequency, –3dB frequencies at
138MHz and 200MHz.
Figure 7. Single-Ended Input to LTC6401-14 and LTC2208
Figure 8. IMD3 for the Combination of LTC6401-14 and LTC2208
Output Common Mode Adjustment
The LTC6401-14’s output common mode voltage is set
by the VOCM pin, which is a high impedance input. The
output common mode voltage is capable of tracking VOCM
in a range from 1V to 1.6V. Bandwidth of VOCM control is
typically 14MHz, which is dominated by a low pass lter
connected to the VOCM pin and is aimed to reduce com-
mon mode noise generation at the outputs. The internal
common mode feedback loop has a –3dB bandwidth
around 400MHz, allowing fast rejection of any common
mode output voltage disturbance. The VOCM pin should
be tied to a DC bias voltage with a 0.1μF bypass capaci-
tor. When interfacing with 3V 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 LTC6401-14 has been specically designed to interface
directly with high speed A/D converters. Figure 7 shows the
LTC6401-14 with single-ended input driving the LTC2208,
which is a 16-bit, 130Msps ADC. Two external 5Ω resistors
help eliminate potential resonance associated with bond
wires of either the ADC input or the driver output. VOCM
of the LTC6401-14 is connected to VCM of the LTC2208
at 1.25V. Alternatively, an input single-ended signal can
be converted to differential signal via a balun and fed to
the input of the LTC6401-14.
Figure 8 summarizes the IMD3 performance of the whole
system as shown in Figure 7.
APPLICATIONS INFORMATION
640114 F06
IN+
OUT–
IN–
OUT+
200
Ω
12.5
Ω
500
Ω
LTC6401-14
LTC2208
200
Ω
500
Ω
12.5
Ω
10
Ω
10
Ω
4.99
Ω
4.99
Ω
50
Ω
50
Ω
13
14
15
16
7
5
6
8
39pF
16nH
39pF
+OUT
+OUTF
–OUTF
–OUT
+IN
–IN
1.7pF
39pF
29
Ω
68.5
Ω
0.1
μF
0.1
μF
640114 F07
LTC6401-14
VOCM
ENABLE
LTC2208
4.99
Ω
0.1
μF
LTC2208 130Msps
16-Bit ADC
1.25V
4.99
Ω
8dB GAIN
+OUT
+OUTF
–OUTF
–OUT
AIN–
AIN+
VCM
–IN
+IN
IF IN
相关PDF资料 |
PDF描述 |
|---|---|
| LTC6401CUD-20#PBF | IC ADC DRIVER DIFF 16-QFN |
| LTC6401CUD-26#PBF | IC ADC DRIVER DIFF 16-QFN |
| LTC6401IUD-8#TRPBF | IC ADC DRIVER DIFF 16-QFN |
| LTC6403IUD-1#TRPBF | IC AMP/DRIVER LN LP 16-QFN |
| LTC6404IUD-4#PBF | IC AMP/DRIVER DIFF 16-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC6401CUD-14-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2GHz Low Noise, Low Distortion Differential ADC Driver for DC-140MHz |
| LTC6401CUD-20#PBF | 功能描述:IC ADC DRIVER DIFF 16-QFN RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:可变增益放大器 应用:CATV 安装类型:表面贴装 封装/外壳:20-WQFN 裸露焊盘 供应商设备封装:20-TQFN-EP（5x5） 包装:托盘 |
| LTC6401CUD-20#TRPBF | 功能描述:IC ADC DRIVER DIFF 16-QFN RoHS:是 类别:集成电路 (IC) >> 线性 - 放大器 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:60 系列:- 类型:可变增益放大器 应用:CATV 安装类型:表面贴装 封装/外壳:20-WQFN 裸露焊盘 供应商设备封装:20-TQFN-EP（5x5） 包装:托盘 |
| LTC6401CUD-20PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF |
| LTC6401CUD-20TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF |
发布紧急采购，3分钟左右您将得到回复。