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ADS1282

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用于地震监测和能源勘探且具有 PGA 的超高分辨率 4kSPS 2 通道 Δ-Σ ADC

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ADS1282

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产品详情

Resolution (Bits) 31 Sample rate (max) (ksps) 4 Number of input channels 2 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 1.15, 3.75 Input voltage range (min) (V) -1.9, 0.7 Features PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 25 Analog supply voltage (min) (V) -2.5, 0 Analog supply voltage (max) (V) 2.5, 5 SNR (dB) 130 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 31 Sample rate (max) (ksps) 4 Number of input channels 2 Interface type SPI Architecture Delta-Sigma Input type Differential Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 1.15, 3.75 Input voltage range (min) (V) -1.9, 0.7 Features PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 25 Analog supply voltage (min) (V) -2.5, 0 Analog supply voltage (max) (V) 2.5, 5 SNR (dB) 130 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
TSSOP (PW) 28 62.08 mm² (9.7 mm × 6.4 mm)
  • High Resolution:
    130-dB SNR (250 SPS)
  • High Accuracy:
    THD: –122 dB
    INL: 0.5 ppm
  • Low-Noise PGA
  • Two-Channel Input Mux
  • Inherently-Stable Modulator with Fast Responding
    Overrange Detection
  • Flexible Digital Filter:
    Sinc + FIR + IIR (Selectable)
    Linear or Minimum Phase Response
    Programmable High-Pass Filter
    Selectable FIR Data Rates: 250 SPS
    to 4 kSPS
  • Filter Bypass Option
  • Low Power Consumption: 25 mW
    Shutdown: 10 µW
  • Offset and Gain Calibration Engine
  • SYNC Input
  • Analog Supply:
    Unipolar (+5 V) or Bipolar (±2.5 V)
  • Digital Supply: 1.8 V to 3.3 V
  • High Resolution:
    130-dB SNR (250 SPS)
  • High Accuracy:
    THD: –122 dB
    INL: 0.5 ppm
  • Low-Noise PGA
  • Two-Channel Input Mux
  • Inherently-Stable Modulator with Fast Responding
    Overrange Detection
  • Flexible Digital Filter:
    Sinc + FIR + IIR (Selectable)
    Linear or Minimum Phase Response
    Programmable High-Pass Filter
    Selectable FIR Data Rates: 250 SPS
    to 4 kSPS
  • Filter Bypass Option
  • Low Power Consumption: 25 mW
    Shutdown: 10 µW
  • Offset and Gain Calibration Engine
  • SYNC Input
  • Analog Supply:
    Unipolar (+5 V) or Bipolar (±2.5 V)
  • Digital Supply: 1.8 V to 3.3 V

The ADS1282 is an extremely high-performance, single-chip analog-to-digital converter (ADC) with an integrated, low-noise programmable gain amplifier (PGA) and two-channel input multiplexer (mux). The ADS1282 is suitable for the demanding needs of energy exploration and seismic monitoring environments.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance. The modulator is used either in conjunction with the on-chip digital filter, or can be bypassed for use with post processing filters.

The flexible input MUX provides an additional external input for measurement, as well as internal self-test connections. The PGA features outstanding low noise (5 nV/√Hz) and high input impedance, allowing easy interfacing to geophones and hydrophones over a wide range of gains.

The digital filter provides selectable data rates from 250 to 4000 samples per second (SPS). The high-pass filter (HPF) features an adjustable corner frequency. On-chip gain and offset scaling registers support system calibration.

The synchronization input (SYNC) can be used to synchronize the conversions of multiple ADS1282s. The SYNC input also accepts a clock input for continuous alignment of conversions from an external source.

Together, the amplifier, modulator, and filter dissipate 25 mW. The ADS1282 is available in a compact TSSOP-28 package and is fully specified from –40°C to +85°C, with a maximum operating range to +125°C.

The ADS1282 is an extremely high-performance, single-chip analog-to-digital converter (ADC) with an integrated, low-noise programmable gain amplifier (PGA) and two-channel input multiplexer (mux). The ADS1282 is suitable for the demanding needs of energy exploration and seismic monitoring environments.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance. The modulator is used either in conjunction with the on-chip digital filter, or can be bypassed for use with post processing filters.

The flexible input MUX provides an additional external input for measurement, as well as internal self-test connections. The PGA features outstanding low noise (5 nV/√Hz) and high input impedance, allowing easy interfacing to geophones and hydrophones over a wide range of gains.

The digital filter provides selectable data rates from 250 to 4000 samples per second (SPS). The high-pass filter (HPF) features an adjustable corner frequency. On-chip gain and offset scaling registers support system calibration.

The synchronization input (SYNC) can be used to synchronize the conversions of multiple ADS1282s. The SYNC input also accepts a clock input for continuous alignment of conversions from an external source.

Together, the amplifier, modulator, and filter dissipate 25 mW. The ADS1282 is available in a compact TSSOP-28 package and is fully specified from –40°C to +85°C, with a maximum operating range to +125°C.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 High-Resolution ADC 数据表 (Rev. I) 2015-3-6
应用手册 计算 Δ-Σ ADC 的转换延迟和系统周期时间 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2024-3-27
应用手册 Δ-Σ ADC 中的数字滤波器类型 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2023-4-13
电子书 Fundamentals of Precision ADC Noise Analysis (Rev. A) 2020-6-19

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

支持软件

ADS1282-C-EXAMPLE-CODE — ADS1282 example C code

Expedite your embedded design using this example C code for the ADS1282
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仿真模型

ADS1282 IBIS Model

SBAM093.ZIP (79 KB) - IBIS 模型
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计算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。

除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。

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设计工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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封装 引脚 CAD 符号、封装和 3D 模型
TSSOP (PW) 28 Ultra Librarian
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