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参数资料
| 型号： | DC846A |
| 厂商： | Linear Technology |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2447 |
| 软件下载： | QuikEval System |
| 设计资源： | DC846A Design File DC846A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 8k |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 已用 IC / 零件： | LTC2447 |
| 已供物品： | 板 |
| 相关产品： | LTC2447IUHF#PBF-ND - IC ADC 24BIT 8CH HI SPEED 38QFN LTC2447CUHF#PBF-ND - IC ADC 24BIT 8CH HI SPEED 38QFN LTC2447IUHF#TRPBF-ND - IC ADC 24BIT 8CH HI SPEED 38QFN LTC2447CUHF#TRPBF-ND - IC ADC 24BIT 8CH HI SPEED 38QFN |
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LTC2446/LTC2447
1
24467fa
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
■ Flow
■ Weight Scales
■
Pressure
■ Direct Temperature Measurement
■ Gas Chromatography
■ Five Selectable Differential Reference Inputs
■ Four Differential/Eight Single-Ended Inputs
■ 4-Way MUX for Multiple Ratiometric
Measurements
■ Up to 8kHz Output Rate
■ Up to 4kHz Multiplexing Rate
■ Selectable Speed/Resolution:
2
VRMS Noise at 1.76kHz Output Rate
200nVRMS Noise at 13.8Hz Output Rate with
Simultaneous 50/60Hz Rejection
■ Guaranteed Modulator Stability and Lock-Up
Immunity for any Input and Reference Conditions
■ 0.0005% INL, No Missing Codes
■ Autosleep Enables 20
A Operation at 6.9Hz
■ <5
V Offset (4.5V < VCC < 5.5V, –40°C to 85°C)
■ Differential Input and Differential Reference with
GND to VCC Common Mode Range
■ No Latency Mode, Each Conversion is Accurate Even
After a New Channel is Selected
■ Internal Oscillator—No External Components
■ LTC2447 Includes MUXOUT/ADCIN for External
Buffering or Gain
■ Tiny QFN 5mm x 7mm Package
24-Bit High Speed
8-Channel
Σ ADCs with
Selectable Multiple Reference Inputs
The LTC
2446/LTC2447 4-terminal switching enables
multiplexed ratiometric measurements. Four sets of se-
lectable differential inputs coupled with four sets of differ-
ential reference inputs allow multiple RTDs, bridges and
other sensors to be digitized by a single converter. A fifth
differential reference input can be selected for any input
channel not requiring ratiometric measurements (ther-
mocouples, voltages, current sense, etc.). The flexible
input multiplexer allows single-ended or differential in-
puts coupled with a slaved reference input or a universal
reference input.
A proprietary delta-sigma architecture results in absolute
accuracy (offset, full-scale, linearity) of 15ppm, noise as
low as 200nVRMS and speeds as high as 8kHz. Through a
simple 4-wire interface, ten speed/resolution combina-
tions can be selected. The first conversion following a
speed, resolution, channel change or reference change is
valid since there is no settling time between conversions,
enabling scan rates of up to 4kHz. Additionally, a 2x mode
can be selected for any speed-enabling output rates up to
8kHz with one cycle of latency.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTC2446 Speed vs RMS Noise
Multiple Ratiometric Measurement System
CONVERSION RATE (Hz)
1
0.1
RMS
NOISE
(
V)
1
10
100
10
100
24467 TA02
1000
10000
2.8
V AT 880Hz
280nV AT 6.9Hz
(50/60Hz REJECTION)
VCC = 5V
VREF = 5V
VIN
+ = V
IN
– = 0V
2x SPEED MODE
NO LATENCY MODE
VARIABLE SPEED/
RESOLUTION 24-BIT
Σ ADC
+
–
19-INPUT
4-OUTPUT
MUX
REF+
VCC
LTC2446
IN+
IN–
REF–
CS
SDI
SDO
SCK
24467 TA01
Protected by U.S. Patents, including 6140950, 6169506, 6208279, 6411242, 6639526
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相关代理商/技术参数 |
参数描述 |
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| DC847A | 功能描述:BOARD DELTA SIGMA ADC LTC2446 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 |
| DC850 | 制造商:Molex 功能描述: |
| DC852A | 功能描述:BOARD DEMO FOR LTC4354 RoHS:是 类别:未定义的类别 >> 其它 系列:* 标准包装:1 系列:* 其它名称:MS305720A |
| DC8550 | 制造商:DCCOM 制造商全称:Dc Components 功能描述:TECHNICAL SPECIFICATIONS OF PNP EPITAXIAL PLANAR TRANSISTOR |
| DC8550S | 制造商:DCCOM 制造商全称:Dc Components 功能描述:TECHNICAL SPECIFICATIONS OF PNP EPITAXIAL PLANAR TRANSISTOR |
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