- 您现在的位置：买卖IC网 > PDF目录10656 > LTC2393CLX-16#PBF (Linear Technology)IC ADC 16BIT SER/PAR 1M 48-LQFP PDF资料下载
参数资料
| 型号： | LTC2393CLX-16#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT SER/PAR 1M 48-LQFP |
| 标准包装： | 250 |
| 位数： | 16 |
| 采样率（每秒）： | 1M |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 175mW |
| 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： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 托盘 |
| 输入数目和类型： | 1 个差分，双极 |
| 产品目录页面： | 1347 (CN2011-ZH PDF) |
| 配用： | DC1500A-A-ND - BOARD SAR ADC LTC2393-16 |
LTC2393-16
12
239316fa
APPLICATIONS INFORMATION
INPUT DRIVE CIRCUITS
A low impedance source can directly drive the high imped-
ance inputs of the LTC2393-16 without gain error. A high
impedance source should be buffered to minimize settling
time during acquisition and to optimize the distortion
performance of the ADC.
For best performance, a buffer amplifier should be used to
drive the analog inputs of the LTC2393-16. The amplifier
provides low output impedance to allow for fast settling
of the analog signal during the acquisition phase. It also
provides isolation between the signal source and the ADC
inputs which draw a small current spike during acquisition.
Input Filtering
The noise and distortion of the buffer amplifier and other
circuitry must be considered since they add to the ADC
noise and distortion. Noisy input circuitry should be filtered
prior to the analog inputs to minimize noise. A simple
1-pole RC filter is sufficient for many applications.
Large filter RC time constants slow down the settling at
the analog inputs. It is important that the overall RC time
constants be short enough to allow the analog inputs to
completely settle to 16-bit resolution within the acquisi-
tion time (tACQ).
High quality capacitors and resistors should be used in the
RC filter since these components can add distortion. NPO
and silver mica type dielectric capacitors have excellent
linearity. Carbon surface mount resistors can generate
distortion from self heating and from damage that may
occur during soldering. Metal film surface mount resistors
are much less susceptible to both problems.
Single-to-Differential Conversion
For single-ended input signals, a single-ended-to-differ-
ential conversion circuit must be used to produce a dif-
ferential signal at the ADC inputs. The LT6350 ADC driver is
recommendedforperformingasingle-ended-to-differential
conversion, as shown in Figure 4a. Its low noise and good
DC linearity allows the LTC2393-16 to meet full data sheet
specifications. An alternative solution using two op amps
is shown in Figure 4b. Using two LT1806 op amps, the
circuit achieves 94.1dB signal-to-noise ratio (SNR). For a
20kHz input signal, the input of the LTC2393-16 has been
bandwidth limited to about 25kHz.
ADC REFERENCE
A low noise, low temperature drift reference is critical to
achieving the full data sheet performance of the ADC. The
LTC2393-16 provides an excellent internal reference with
a ±20ppm/°C (max) temperature coefficient. For better
accuracy, an external reference can be used.
The high speed, low noise internal reference buffer is used
for both internal and external reference applications. It
cannot be bypassed.
Figure 4a. Recommended Single-Ended-to-Differential
Conversion Circuit Using the LT6350 ADC Driver
249Ω
301Ω
ANALOG
INPUT
0V TO 4.096V
COMMON
MODE
VOLTAGE
301Ω
0.013μF
LTC2393-16
239316 F04b
IN+
IN–
–
+
LT1806
–
+
LT1806
249Ω
ANALOG INPUT
0V TO 4.096V
SINGLE-ENDED-
TO-DIFFERENTIAL
DRIVER
249Ω
2200pF
LTC2393-16
239316 F04a
IN+
IN–
LT6350
Figure 4b. Alternative Single-Ended-to-Differential Conversion
Circuit Using Two LT1806 Op Amps
相关PDF资料 |
PDF描述 |
|---|---|
| AD9244BSTZ-65 | IC ADC 14BIT 65MSPS 48-LQFP |
| VI-B1J-MW | CONVERTER MOD DC/DC 36V 100W |
| AD7676ASTZ | IC ADC 16BIT 500KSPS DIFF 48LQFP |
| VE-J1K-MW-F4 | CONVERTER MOD DC/DC 40V 100W |
| LTC2376HMS-18#PBF | IC ADC 18BIT 250KSPS 16-MSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2393CUK-16#PBF | 功能描述:IC ADC 16BIT SER/PAR 1M 48-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2393CUK-16#TRPBF | 功能描述:IC ADC 16BIT SER/PAR 1M 48-QFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| LTC2393HLX-16#PBF | 功能描述:IC ADC 16BIT SER/PAR 1M 48-LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2393ILX-16#PBF | 功能描述:IC ADC 16BIT SER/PAR 1M 48-LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| LTC2393ILX-16#PBF | 制造商:Linear Technology 功能描述:ANALOG TO DIGITAL (A/D) CONVERTER IC |
发布紧急采购，3分钟左右您将得到回复。