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300ksps/400ksps、单电源、4通道、串行10位ADC,内置电压基准

产品详情

主要特征

应用/用途

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 4
Conv. Rate (ksps) (max) 400
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.5
External VREF (V) (min) 1
External VREF (V) (max) 5.5
Unipolar VIN (V) (max) 2.5
Bipolar VIN (±V) (max) 1.25
INL (±LSB) 1
Package/Pins TSSOP/16
Budgetary
Price (See Notes)
2.26
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参量

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 4
Conv. Rate (ksps) (max) 400
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.5
External VREF (V) (min) 1
External VREF (V) (max) 5.5
Unipolar VIN (V) (max) 2.5
Bipolar VIN (±V) (max) 1.25
INL (±LSB) 1
Package/Pins TSSOP/16
Budgetary
Price (See Notes)
2.26

主要特征

  • 4-Channel Single-Ended or 2-Channel
  • Pseudo-Differential Inputs
  • Internal Multiplexer and Track/Hold
  • Single-Supply Operation
    • +4.5V to +5.5V (MAX1082)
    • +2.7V to +3.6V (MAX1083)
  • Internal +2.5V Reference
  • 400kHz Sampling Rate (MAX1082)
  • Low Power: 2.5mA (400ksps)
    • 1.3mA (REDP)
    • 0.9mA (FASTPD)
    • 2µA (FULLPD)
  • SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • 16-Pin TSSOP Package

应用/用途

  • 电池供电应用
  • 数据采集
  • 医疗仪器
  • 笔输入量化器
  • 便携式数据记录
  • 过程控制

描述

The MAX1082/MAX1083 10-bit analog-to-digital converters (ADCs) combine a 4-channel analog-input multiplexer, high-bandwidth track/hold (T/H), and serial interface with high conversion speed and low power consumption. The MAX1082 operates from a single +4.5V to +5.5V supply; the MAX1083 operates from a single +2.7V to +3.6V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/pseudo-differential operation.

The 4-wire serial interface connects directly to SPI/QSPI™ and MICROWIRE® devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1082/ MAX1083 use an external serial-interface clock to perform successive-approximation analog-to-digital conversions. The devices feature an internal +2.5V reference and a reference-buffer amplifier with a ±1.5% voltage-adjustment range. An external reference with a 1V to VDD range may also be used.

The MAX1082/MAX1083 provide a hard-wired active-low SHDN pin and four software-selectable power modes (normal operation, reduced power (REDP), fast power-down (FASTPD), and full power-down (FULLPD)). These devices can be programmed to shut down automatically at the end of a conversion or to operate with reduced power. When using the power-down modes, accessing the serial interface automatically powers up the devices, and the quick turn-on time allows them to be shut down between all conversions.

The MAX1082/MAX1083 are available in 16-pin TSSOP packages.

简化框图

MAX1082、MAX1082A、MAX1082B、MAX1083、MAX1083A、MAX1083B:典型工作电路 MAX1082、MAX1082A、MAX1082B、MAX1083、MAX1083A、MAX1083B:典型工作电路 Zoom icon

技术文档

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Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心