Datasheet Linear Technology LTC2508CDKD-32#PBF — 数据表

制造商	Linear Technology
系列	LTC2508-32
零件号	LTC2508CDKD-32#PBF

具有可配置数字滤波器的32位过采样ADC

数据表

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PDF, 1.4 Mb, 语言: en, 文件上传: Aug 21, 2017, 页数: 36
32-Bit Over-Sampling ADC with Configurable Digital Filter

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价格

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Package	7x4 DFN-24
Package Code	DKD
Package Index	05-08-1864

参数化

ADC INL	2147 LSB
ADCs	1
Architecture	SAR with Digital Filter
Bipolar/Unipolar Input	Unipolar, Bipolar
Bits	32 bits
Number of Channels	1
Demo Boards	DC2222A-B
Design Tools	Linduino File
Export Control	no
Features	Integrated Digital Filter, No Latency 14-Bit 1Msps Output
I/O	Serial SPI
Input Drive	Fully Differential
Input Span	В±2.5V to В±5.1V
Internal Reference	no
Operating Temperature Range	0 to 70 °C
Power	24 mW
SFDR	118 dB
SINAD	145 dB
SNR	145 dB
Simultaneous	no
Speed	1000 ksps
Supply Voltage Range	2.5
THD dB	-118 dB

生态计划

RoHS

Compliant

设计须知

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Reference Filter Increases 32-Bit ADC SNR by 6dB &mdash DN568
PDF, 242 Kb, 档案已发布: Sep 26, 2017
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Reference Filter Increases 32-Bit ADC SNR by 6dB
Design Note 568
Guy Hoover
Introduction
Attaining optimal SNR performance from an ADC isnвЂ™t
just a matter of providing a low noise signal to the ADCвЂ™s
input. Providing a low noise reference voltage is just
as important. While reference noise has no effect at
zero-scale, at full-scale any noise on the reference will
be visible in the output code. This is why dynamic range
(DR) which is measured at zero-scale is usually several
dB better for a given ADC than the signal-to-noise ratio
(SNR) which is measured at or near full-scale. Providing
a low noise reference voltage is particularly important
in an oversampling application where itвЂ™s possible for
the ADCвЂ™s SNR to exceed 140dB. To achieve an SNR
at this level, even the best low noise references need
some help to reduce their noise levels.
There are several alternatives that can reduce reference
noise. Increasing the size of the bypass capacitor or
using a simple lowpass RC filter on the reference output
are not good alternatives. A large bypass capacitor on
the reference output by itself cannot produce a low …

模型线

系列: LTC2508-32 (4)

LTC2508CDKD-32#PBF LTC2508CDKD-32#TRPBF LTC2508IDKD-32#PBF LTC2508IDKD-32#TRPBF

制造商分类

Data Conversion > Analog-to-Digital Converters (ADC) > Precision ADCs (Fs < 10Msps) > Single Channel ADCs

其他名称:

LTC2508CDKD-32PBF, LTC2508CDKD-32 PBF, LTC2508CDKD32#PBF, LTC2508CDKD 32#PBF

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