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參數(shù)資料
| 型號： | LTC2151CUP-14#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| 封裝： | 6 X 6 MM, LEAD FREE, PLASTIC, QFN-40 |
| 文件頁數(shù)： | 11/32頁 |
| 文件大?。?/td> | 4005K |
| 代理商： | LTC2151CUP-14#PBF |
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21521014p
LTC2152-14/
LTC2151-14/LTC2150-14
CONVERTER OPERATION
The LTC2152-14/LTC2151-14/LTC2150-14 are 14-bit
250Msps/210Msps/170Msps A/D converters that
are powered by a single 1.8V supply. The analog
inputs must be driven differentially. The encode in-
puts should be driven differentially for optimal per-
formance. The digital outputs are double-data rate
LVDS. Additional features can be chosen by programming
the mode control registers through a serial SPI port.
ANALOG INPUT
The analog inputs is a differential CMOS sample-and-
hold circuit (Figure 2). It must be driven differentially
around a common mode voltage set by the VCM output
pin, which is nominally 0.8V. The inputs should swing
from VCM – 0.375V to VCM + 0.375V. There should be a
180° phase difference between the inputs.
INPUT DRIVE CIRCUITS
Input Filtering
If possible, there should be an RC lowpass filter right at
the analog inputs. This lowpass filter isolates the drive
circuitryfromtheA/Dsample-and-holdswitching,andalso
limits wide band noise from the drive circuitry. Figure 3
shows an example of an input RC filter. The RC component
values should be chosen based on the application’s input
frequency.
Transformer-Coupled Circuits
Figure 3 shows the analog input being driven by an RF
transformer with the common mode supplied through a
pair of resistors via the VCM pin.
At higher input frequencies a transmission line balun
transformer (Figures 4 and 5) has better balance, resulting
in lower A/D distortion.
2pF
RON
20
RON
20
VDD
LTC2152-14
AIN+
21521014 F02
2pF
VDD
AIN–
ENC–
ENC+
2pF
1.2V
5
10k
5
25
4.7
10
0.1F
10pF
0.1F
LTC2152-14
IN
0.1F
T1
1:1
T1: MACOM ETC1-1T
21521014 F03
AIN+
AIN–
VCM
Figure 2. Equivalent Input Circuit for Differential Input Clock
Figure 3. Analog Input Circuit Using a Transformer.
Recommended for Input Frequencies from 5MHz to 70MHz
APPLICATIONS INFORMATION
Figure 4. Recommended Front-End Circuit for
Input Frequencies from 15MHz to 150MHz
10
0.1F
IN
0.1F
T1
T2
1:1
MABA
007159-
000000
T1: MACOM ETC1-1-13
21521014 F04
LTC2152-14
AIN+
AIN–
VCM
45
100
4.7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2151IUP-14#PBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2151IUP-14#TRPBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2150IUP-14#PBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2150IUP-14#TRPBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
| LTC2152CUP-14#PBF | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2151IUJ-12#PBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT 210MSPS 40QFN |
| LTC2151IUJ-12#TRPBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT 210MSPS 40QFN |
| LTC2151IUJ-14#PBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 210Msps 14-bit Parallel/Serial (SPI)/LVDS 40-Pin QFN EP 制造商:Linear Technology 功能描述:IC ADC 14BIT SPI 210MSPS 40QFN |
| LTC2151IUJ-14#TRPBF | 制造商:Linear Technology 功能描述:ADC Single Pipelined 210Msps 14-bit Parallel/Serial (SPI)/LVDS 40-Pin QFN EP T/R 制造商:Linear Technology 功能描述:IC ADC 14BIT SPI 210MSPS 40QFN |
| LTC2151IUP-14PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit 250Msps/ 210Msps/170Msps ADCs |
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