- 您现在的位置：买卖IC网 > PDF目录212189 > DDC118IRTCT (TEXAS INSTRUMENTS INC) 8-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC48 PDF资料下载
参数资料
| 型号： | DDC118IRTCT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 8-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC48 |
| 封装： | GREEN, PLASTIC, QFN-48 |
| 文件页数： | 34/35页 |
| 文件大小： | 653K |
| 代理商： | DDC118IRTCT |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页当前第34页第35页
DDC118
SBAS325B JUNE 2004 REVISED APRIL 2009
www.ti.com
8
THEORY OF OPERATION
The block diagram of the DDC118 is shown in Figure 1.
The device contains eight identical input channels that
perform the function of current-to-voltage integration
followed by a multiplexed A/D conversion. Each input has
two integrators so that the current-to-voltage integration
can be continuous in time. The output of the sixteen
integrators are switched to four delta-sigma (
Σ)
converters via four four-input multiplexers. With the
DDC118 in the continuous integration mode, the output of
the integrators from one side of the inputs will be digitized
while the other eight integrators are in the integration
mode, as illustrated in the timing diagram in Figure 2. This
integration and A/D conversion process is controlled by
the system clock, CLK. The results from side A and side
B of each signal input are stored in a serial output shift
register. The DVALID output goes low when the shift
register contains valid data.
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
M odulato r
Digital
Filter
Dig ital
In pu t/Output
FORMAT
DCLK
DVALID
DOUT
DIN
C ontro l
IN3
IN1
VREF
DGND
DVDD
AGND
AVDD
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
M odulato r
Digital
Filter
IN4
IN2
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
M odulato r
Digital
Filter
IN7
IN5
Dual
Switched
Integrator
Dual
Switched
Integrator
Σ
M odulato r
Digital
Filter
IN8
IN6
CLK
CONV
RANGE0
RANGE1
RANGE2
TEST
CLK_4X
HISPD/LOPWR
RESET
Figure 1. DDC118 Block Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| DPB25F0/25F | 50 CONTACT(S), FEMALE-FEMALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DPB25M/25M0 | 50 CONTACT(S), MALE-MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DPB25M/25M | 50 CONTACT(S), MALE-MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DPB25M0/25M0 | 50 CONTACT(S), MALE-MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| DPB25M0/25M | 50 CONTACT(S), MALE-MALE, D SUBMINIATURE CONNECTOR, SOLDER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DDC118IRTCT | 制造商:Texas Instruments 功能描述:IC ADC 20BIT OCTAL 48-VQFN |
| DDC118IRTCT | 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC ((NW)) |
| DDC118IRTCTG4 | 功能描述:模数转换器 - ADC Octal Current-Input 20-Bit RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| DDC11XEVM-PDK | 功能描述:数据转换 IC 开发工具 DDC11xEVM-PDK Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| DDC122LH | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:NPN PRE-BIASED SMALL SIGNAL SOT-563 DUAL SURFACE MOUNT TRANSISTOR |
发布紧急采购，3分钟左右您将得到回复。