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ADS1278-HT的基本参数
  • 制造厂商:TI
  • 产品类别:数据转换器
  • 技术类目:模数转换器 (ADC) - 精密模数转换器 (<=10MSPS)
  • 功能描述:高温四路/八路同步采样 24 位模数转换器
  • 点击这里打开及下载ADS1278-HT的技术文档资料
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ADS1278-HT的产品详情:

Based on the single-channel ADS1271, the ADS1278 (octal) is a 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) with data rates up to 128 k samples per second (SPS), allowing simultaneous sampling of eight channels.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1278 combines these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005 dB of ripple.

Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The device is fully specified over the extended industrial range (–55°C to 210°C) and is available in an HTQFP-64 PowerPAD package (–55°C to 175°C), an 84-pin HFQ package and a KGD chiptray option.

ADS1278-HT的优势和特性:
  • Simultaneously Measure Eight Channels
  • Up to 128-kSPS Data Rate
  • AC Performance: 62-kHz Bandwidth 111-dB SNR (High-Resolution Mode) –108-dB THD
  • DC Accuracy: 0.8-μV/°C Offset Drift 1.3-ppm/°C Gain Drift
  • Selectable Operating Modes: High-Speed: 128 kSPS, 106 dB SNR High-Resolution: 52 kSPS, 111 dB SNR Low-Power: 52 kSPS, 31 mW/ch Low-Speed: 10 kSPS, 7 mW/ch
  • Linear Phase Digital Filter
  • SPI or Frame-Sync Serial Interface
  • Low Sampling Aperture Error
  • Modulator Output Option (digital filter bypass)
  • Analog Supply: 5 V
  • Digital Core: 1.8 V
  • I/O Supply: 1.8 V to 3.3 V
  • Currently Available in an HTQFP-64 PowerPAD? package, an 84-Pin HFQ Package and a KGD Chiptray Option
  • Supports Extreme Temperature Applications
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Extreme (–55°C/210°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability
    • Texas Instruments High Temperature Products Utilize Highly Optimized Silicon (Die) Solutions With Dsign and Process Enhancements to Maximize Performance Over Extended Temperatures
  • APPLICATIONS
    • Down-Hole Drilling
    • High Temperature Environments
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

(1) Custom temperature ranges available All other trademarks are the property of their respective owners

ADS1278-HT的参数(英文):
  • Resolution (Bits)
  • 24
  • Number of input channels
  • 8
  • Sample rate (Max) (kSPS)
  • 144
  • Interface type
  • SPI
  • Architecture
  • Delta-Sigma
  • Input type
  • Differential
  • Multi-channel configuration
  • Simultaneous Sampling
  • Rating
  • High Temp
  • Reference mode
  • Ext
  • Input range (Max) (V)
  • 5.25
  • Input range (Min) (V)
  • 0
  • Features
  • Daisy-Chainable
  • Operating temperature range (C)
  • -55 to 175, -55 to 210
  • Power consumption (Typ) (mW)
  • 530
  • Analog voltage AVDD (Min) (V)
  • 4.75
  • SNR (dB)
  • 111
  • Analog voltage AVDD (Max) (V)
  • 5.25
  • INL (Max) (+/-LSB)
  • 251.7
  • Digital supply (Min) (V)
  • 1.65
  • Digital supply (Max) (V)
  • 1.95
ADS1278-HT具体的完整产品型号参数及价格(美元):

ADS1278-HT的完整型号有:ADS1278HPAP、ADS1278SHFQ、ADS1278SHKP、ADS1278SKGDA,以下是这些产品的关键参数及官网采购报价:

ADS1278HPAP,工作温度:-55 to 175,封装:HTQFP (PAP)-64,包装数量MPQ:160个,MSL 等级/回流焊峰值温度:Level-4-260C-72 HR,引脚镀层/焊球材料:NIPDAU,TI官网ADS1278HPAP的批量USD价格:137.504(1000+)

ADS1278SHFQ,工作温度:-55 to 210,封装:CFP (HFQ)-84,包装数量MPQ:10个,MSL 等级/回流焊峰值温度:Call TI,引脚镀层/焊球材料:Call TI,TI官网ADS1278SHFQ的批量USD价格:404.247(1000+)

ADS1278SHKP,工作温度:-55 to 210,封装:CFP (HKP)-84,包装数量MPQ:1个,MSL 等级/回流焊峰值温度:Call TI,引脚镀层/焊球材料:Call TI,TI官网ADS1278SHKP的批量USD价格:509.351(1000+)

ADS1278SKGDA,工作温度:-55 to 210,封装: (KGD)-0,包装数量MPQ:36个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:Call TI,TI官网ADS1278SKGDA的批量USD价格:192.5(1000+)

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ADS1278-HT的评估套件:

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