参数资料
型号: LTC2485CDD#TRPBF
厂商: Linear Technology
文件页数: 9/40页
文件大小: 0K
描述: IC ADC 24BIT I2C 10-DFN
标准包装: 2,500
位数: 24
采样率(每秒): 6.8
数据接口: I²C,串行
转换器数目: 1
功率耗散(最大): 480µW
电压电源: 单电源
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-DFN(3x3)
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
配用: DC956A-ND - BOARD DELTA SIGMA ADC LTC2485
LTC2485
17
2485fc
APPLICATIONS INFORMATION
OPERATION SEQUENCE
The LTC2485 acts as a transmitter or receiver. The device
may be programmed to perform several functions. These
include measuring an external differential input signal or
an integrated temperature sensor, selecting line frequency
rejection (50Hz, 60Hz, or simultaneous 50Hz and 60Hz),
and a 2x speed up mode.
Continuous Read
In applications where the conguration does not need
to change for each conversion cycle, the conversion
result can be continuously read. The conguration
remains unchanged from the last value written into
the device. If the device has not been written to since
power up, the conguration is set to the default value
(Input External, simultaneous 50Hz/60Hz rejection, and
1x speed mode). The operation sequence is shown in
Figure 6. When the conversion is nished, the device
may be addressed for a read operation. At the end of a
read operation, a new conversion begins. At the conclu-
sion of the conversion cycle, the next result may be read
using the method described above. If the conversion
cycle is not concluded and a valid address selects the
device, the LTC2485 generates a NAK signal indicating
the conversion cycle is in progress.
Continuous Read/Write
Once the conversion cycle is concluded, the LTC2485 can
be written to then read from, using the repeated Start
(Sr) command.
Figure 7 shows a cycle which begins with a data Write, a
repeated start, followed by a read, and concluded with a
stop command. The following conversion begins after all 32
bits are read out of the device or after the STOP command
and uses the newly programmed conguration data.
S
ACK
DATA
Sr
DATA TRANSFERRING
P
SLEEP
DATA INPUT/OUTPUT
CONVERSION
7-BIT ADDRESS
R/W
2485 F05
7-BIT ADDRESS
CONVERSION
SLEEP
DATA OUTPUT
7-BIT ADDRESS
SS
RR
ACK
READ
PP
2485 F06
7-BIT ADDRESS
CONVERSION
ADDRESS
SLEEP
DATA OUTPUT
DATA INPUT
7-BIT ADDRESS
S
R
W ACK
ACK
WRITE
Sr
P
READ
2485 F07
Figure 5. The LTC2485 Conversion Sequence
Figure 6. Consecutive Reading at the Same Conguration
Figure 7. Write, Read, Start Conversion
相关PDF资料
PDF描述
LTC2487CDE#PBF IC ADC 16BIT DELTA SIG 14-DFN
LTC2492IDE#TRPBF IC ADC 24BIT DELTA SIG 14-DFN
LTC2493IDE#TRPBF IC ADC 24BIT DELTA SIG 14-DFN
LTC2494IUHF#TRPBF IC ADC 16BIT W/PGA 38-QFN
LTC2495CUHF#PBF IC ADC 16BIT W/PGA 38-QFN
相关代理商/技术参数
参数描述
LTC2485IDD 制造商:Linear Technology 功能描述:ADC Single Delta-Sigma 7.5sps 24-bit Serial 10-Pin DFN EP
LTC2485IDD#PBF 功能描述:IC ADC 24BIT I2C 10-DFN 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
LTC2485IDD#TRPBF 功能描述:IC ADC 24BIT I2C 10-DFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
LTC2486CDE#PBF 功能描述:IC ADC 16BIT W/PGA 14-DFN 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
LTC2486CDE#TRPBF 功能描述:IC ADC 16BIT W/PGA 14-DFN RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494