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参数资料
| 型号： | LTC2153CUJ-14#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT DUAL 310MSPS 40QFN |
| 标准包装： | 61 |
| 位数： | 14 |
| 采样率（每秒）： | 310M |
| 数据接口： | 并联，串行，SPI |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 479mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 管件 |
| 输入数目和类型： | 1 个差分 |
| 配用： | DC1371A-ND - BOARD USB DATA ACQUISITION HS |
11
215314f
LTC2153-14
CONVERTER OPERATION
The LTC2153-14 is a 14-bit 310Msps A/D converter
powered by a single 1.8V supply. The analog inputs
must be driven differentially. The encode inputs
should be driven differentially for optimal perfor-
mance. 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 input is a differential CMOS sample-and-
hold circuit (Figure 2). The input must be driven differ-
entially around a common mode voltage set by the VCM
output pin, which is nominally 0.439 VDD. For the 1.32V
input range, the input should swing from VCM – 0.33V to
VCM + 0.33V. There should be 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 compo-
nent values should be chosen based on the application’s
specific 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
LTC2153-14
AIN+
215314 F02
2pF
VDD
AIN–
ENC–
ENC+
2pF
1.2V
10k
25
4.7
10
0.1F
10pF
0.1F
LTC2153-14
IN
0.1F
T1: MACOM ETC1-1T
215314 F03
AIN+
AIN–
VCM
Figure 2. Equivalent Input Circuit. Only One
of Two Analog Channels Is Shown
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
45
10
4.7
0.1F
100
IN
0.1F
T1: MABA
007159-000000
T2: WBC1-1L
215314 F04
LTC2153-14
AIN+
AIN–
VCM
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2153IUJ-12#PBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT DUAL 310MSPS 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 12-bit, 310Msps, 1.8V ADC, DDR LVDS Outputs |
| LTC2153IUJ-12#TRPBF | 制造商:Linear Technology 功能描述:IC ADC 12BIT DUAL 310MSPS 制造商:Linear Technology 功能描述:MS-ADC/High Speed, 12-bit, 310Msps, 1.8V ADC, DDR LVDS Outputs |
| LTC2153IUJ-14#PBF | 功能描述:IC ADC 14BIT DUAL 310MSPS 40QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:250 系列:- 位数:12 采样率（每秒）:1.8M 数据接口:并联 转换器数目:1 功率耗散（最大）:1.82W 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-LQFP 供应商设备封装:48-LQFP（7x7） 包装:管件 输入数目和类型:2 个单端，单极 |
| LTC2153IUJ-14#TRPBF | 功能描述:IC ADC 14BIT DUAL 310MSPS 40QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:250 系列:- 位数:12 采样率（每秒）:1.8M 数据接口:并联 转换器数目:1 功率耗散（最大）:1.82W 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-LQFP 供应商设备封装:48-LQFP（7x7） 包装:管件 输入数目和类型:2 个单端，单极 |
| LTC2155-12 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 14-Bit 250Msps |
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