- 您现在的位置：买卖IC网 > PDF目录17069 > DC1067A-A (Linear Technology)BOARD DELTA SIGMA ADC LTC2450 PDF资料下载
参数资料
| 型号： | DC1067A-A |
| 厂商： | Linear Technology |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2450 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1067A Design File DC1067A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 30 |
| 数据接口： | 串行，SPI? |
| 已用 IC / 零件： | LTC2450 |
| 已供物品： | 板 |
| 相关产品： | LTC2450IDC#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC-1#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC-1#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450IDC#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC-1#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC-1#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC#TRPBF-ND - IC ADC 16BIT DELTA SIG 6-DFN LTC2450CDC#TRMPBFTR-ND - IC ADC 16BIT DELTA SIG 6-DFN |
LTC2450
16
2450fb
APPLICATIONS INFORMATION
Figure 16. Measured INL vs Input Voltage,
CIN = 0.1μF, VCC = 5V, TA = 25°C
For most applications, it is desirable to implement CIN as
a high quality 0.1μF ceramic capacitor and RS ≤ 1k. This
capacitor should be located as close as possible to the
actual VINpackagepin.Furthermoretheareaencompassed
by this circuit path as well as the path length should be
minimized.
In the case of a 2-wire sensor which is not remotely
grounded, it is desirable to split RS and place series
resistors in the ADC input line as well as in the sensor
ground return line which should be tied to the ADC GND
pin using a star connection topology.
Figure 16 shows the measured LTC2450 INL vs In-
put Voltage as a function of RS value with an input
capacitor CIN = 0.1μF.
In some cases, RScanbeincreasedabovetheseguidelines.
In the case of the LTC2450, in the rst half of the CONVERT
state, the internal calibration algorithm maintains IAV
strictly at zero. Each half of the CONVERT state is about
16.67ms. Additionally, the input current is zero while the
ADC is either in sleep or I/O modes. Thus, if the time
constant of the input R-C circuit τ = RS CIN is of the
same order magnitude or longer than the time periods
between actual conversions, then one can consider the
input current to be reduced correspondingly.
These considerations need to be balanced out by the input
signal bandwidth. The 3dB bandwidth 1/(2π RS CIN).
Finally, if the recommended choice for CIN is unacceptable
for the user’s specic application, an alternate strategy is to
eliminate CIN and minimize CPAR and RS. In practical terms,
this conguration corresponds to a low impedance sensor
directly connected to the ADC through minimum length
traces. Actual applications include current measurements
through low value sense resistors, temperature measure-
ments, low impedance voltage source monitoring and so
on. The resultant INL vs VIN is shown in Figure 17. The
measurements of Figure 17 include a CPAR capacitor cor-
responding to a minimum size layout pad and a minimum
width input trace of about 1 inch length.
Figure 17. Measured INL vs VIN, CIN = 0, VCC = 5V, TA = 25°C
INPUT VOLTAGE (V)
0
INL(LSB)
–4
0
4
3
5
2450 F16
–8
–12
–16
12
4
8
12
16
RS = 10k
RS = 1k
RS = 0
INPUT VOLTAGE (V)
0
INL
(LSB)
8
6
4
2
0
–2
–4
–6
–8
4
2450 F17
123
5
3.5
0.5
1.5
2.5
4.5
RS = 1k
RS = 10k
RS = 0
相关PDF资料 |
PDF描述 |
|---|---|
| 0210390933 | CABLE JUMPER 1MM .178M 23POS |
| PCMC135T-2R2MF | COIL 2.2 UH POWER CHOKE 20% SMD |
| AT-S-26-6/6/B-25-OE-R | MOD CORD SGL-ENDED 6-6 BLACK 25' |
| MIC2005-0.5LYM5 TR | IC DISTRIBUTION SW 0.5A SOT23-5 |
| GSM10DSEI | CONN EDGECARD 20POS .156 EYELET |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1067A-B | 功能描述:BOARD DELTA SIGMA ADC LTC2450-1 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 |
| DC106R | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DC107 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| DC1073A | 制造商:Linear Technology 功能描述:LT3845EFE DEMO BOARD |
| DC1074A | 功能描述:BOARD DAC LTC2630-12 RoHS:是 类别:编程器，开发系统 >> 评估板 - 数模转换器 (DAC) 系列:QuikEval™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率（每秒）:- 数据接口:串行，SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581 |
发布紧急采购，3分钟左右您将得到回复。