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参数资料
| 型号： | LTC2153CUJ-14#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24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 |
LTC2153-14
12
215314f
applicaTions inForMaTion
Figure 5. Recommended Front-End Circuit for
Input Frequencies from 150MHz to 900MHz
Figure 6. Front-End Circuit Using a High
Speed Differential Amplifier
Amplifier Circuits
Figure 6 shows the analog input being driven by a high
speed differential amplifier. The output of the amplifier is
AC coupled to the A/D so the amplifier’s output common
mode voltage can be optimally set to minimize distortion.
At very high frequencies an RF gain block will often have
lower distortion than a differential amplifier. If the gain
block is single-ended, then a transformer circuit (Figures
3 and 5) should convert the signal to differential before
driving the A/D. The A/D cannot be driven single-ended.
Reference
The LTC2153-14 has an internal 1.25V voltage reference.
For a 1.32V input range with internal reference, connect
SENSE to VDD. For a 1.32V input range with an external
reference, apply a 1.25V reference voltage to SENSE
(Figure 7).
Encode Input
The signal quality of the encode inputs strongly affects
the A/D noise performance. The encode inputs should
be treated as analog signals—do not route them next to
digital traces on the circuit board.
The encode inputs are internally biased to 1.2V through
10k equivalent resistance (Figure 8). If the common mode
of the driver is within 1.1V to 1.5V, it is possible to drive
the encode inputs directly. Otherwise a transformer or
4.7
50
0.1F
AIN+
AIN–
0.1F
3pF
VCM
LTC2153-14
215314 F06
INPUT
0.1F
45
10
100
4.7
0.1F
IN
0.1F
T1: MABA
007159-000000
215314 F05
LTC2153-14
AIN+
AIN–
VCM
Figure 7. Reference Circuit
Figure 8. Equivalent Encode Input Circuit
VDD
LTC2153-14
215314 F08
1.2V
10k
ENC+
ENC–
SCALER/
BUFFER
VREF
2.2F
SENSE
1.25V
LTC2153-14
215314 F07
5
ADC
REFERENCE
SENSE
DETECTOR
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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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