- 您现在的位置：买卖IC网 > PDF目录17065 > DC790A (Linear Technology)BOARD DELTA SIGMA ADC LTC2439-1 PDF资料下载
参数资料
| 型号： | DC790A |
| 厂商： | Linear Technology |
| 文件页数： | 11/28页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2439-1 |
| 软件下载： | QuikEval System |
| 设计资源： | DC790A Design File DC790A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 6.8 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 工作温度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2439-1 |
| 已供物品： | 板 |
| 相关产品： | LTC2439-1CGN#PBF-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1IGN#PBF-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1CGN#TRPBF-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1IGN#TRPBF-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1CGN-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1IGN-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1IGN#TR-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP LTC2439-1CGN#TR-ND - IC ADC 16BIT 16CH MCRPWR 28SSOP |
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页当前第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
LTC2439-1
19
24391fa
Internal Serial Clock, 3-Wire I/O,
Continuous Conversion
This timing mode uses a 3-wire interface. The conversion
result is shifted out of the device by an internally generated
serial clock (SCK) signal, see Figure 11. CS may be perma-
nently tied to ground, simplifying the user interface or
isolation barrier.
The internal serial clock mode is selected at the end of the
power-on reset (POR) cycle. The POR cycle is concluded
approximately 1ms after VCC exceeds 2V. An internal weak
pull-up is active during the POR cycle; therefore, the
internal serial clock timing mode is automatically selected
if SCK is not externally driven LOW (if SCK is loaded such
that the internal pull-up cannot pull the pin HIGH, the
external SCK mode will be selected).
During the conversion, the SCK and the serial data output
pin (SDO) are HIGH (EOC = 1). Once the conversion is
complete, SCK and SDO go LOW (EOC = 0) indicating the
conversion has finished and the device has entered the
low power sleep state. The part remains in the sleep state
a minimum amount of time (1/2 the internal SCK period)
then immediately begins outputting data. The data input/
output cycle begins on the first rising edge of SCK and
ends after the 19th rising edge. The input data is then
shifted in via the SDI pin on the rising edge of SCK
(including the first rising edge) and the output data is
shifted out of the SDO pin on each falling edge of SCK.
The internally generated serial clock is output to the SCK
pin. This signal may be used to shift the conversion result
into external circuitry. EOC can be latched on the first
rising edge of SCK and the last bit of the conversion result
can be latched on the 19th rising edge of SCK. After the
19th rising edge, SDO goes HIGH (EOC = 1) indicating a
new conversion is in progress. SCK remains HIGH during
the conversion.
PRESERVING THE CONVERTER ACCURACY
The LTC2439-1 is designed to reduce as much as
possible the conversion result sensitivity to device
decoupling, PCB layout, antialiasing circuits, line fre-
quency perturbations and so on. Nevertheless, in order to
preserve the accuracy capability of this part, some simple
precautions are desirable.
APPLICATIO S I FOR ATIO
WU
UU
Figure 11. Internal Serial Clock, CS = 0 Continuous Operation
(1)
(0)
EN
SGL
A2
A1
A0
ODD/
SIGN
SDI
DON’T CARE
SDO
SCK
(INTERNAL)
CS
MSB
SIG
BIT 6
BIT 0
LSB
BIT 14
BIT 13
BIT 12
BIT 11
BIT 15
BIT 16
BIT 17
EOC
BIT 18
DATA OUTPUT
CONVERSION
24391 F10
VCC
FO
REF+
REF–
CH0
CH7
CH8
CH15
COM
SCK
SDI
SDO
CS
GND
919
11
12
21
28
1
8
10
18
17
15
16
20
REFERENCE
VOLTAGE
0.1V TO VCC
ANALOG
INPUTS
1
F
2.7V TO 5.5V
LTC2439-1
3-WIRE
SPI INTERFACE
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/SIMULTANEOUS
50Hz/60Hz REJECTION
“O”
相关PDF资料 |
PDF描述 |
|---|---|
| EVAL-AD5535EBZ | BOARD EVALUATION FOR AD5535 |
| SDR0403-390KL | INDUCTOR POWER 39UH 0.59A 0403 |
| EBA22DRMD | CONN EDGECARD 44POS .125 SQ WW |
| EVAL-AD5757SDZ | BOARD EVAL FOR AD5757 |
| EVAL-AD5760SDZ | BOARD EVAL FOR AD5760SDZ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC798B | 功能描述:BOARD DELTA SIGMA ADC LTC2480 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:QuikEval™ 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| DC-7G3EWA | 制造商:Kingbright Corporation 功能描述:Red/Green 10-seg LED lightbar, DC-7G3EWA |
| DC7G3HWA | 功能描述:LED条和阵列 7GR 3RED BARGRAFT 10 SEGMENT RoHS:否 制造商:Avago Technologies 产品:LED Light Bars 照明颜色:Red 光强度:45 mcd 封装:Tube |
| DC-7G3HWA | 制造商:Kingbright Corporation 功能描述: |
| DC7K67J/4LR61 | 制造商:Duracell 功能描述: |
发布紧急采购，3分钟左右您将得到回复。