AD7982BCPZ-RL: 18位、1 MSPS PulSAR(R) 7.0 mW ADC,采用MSOP或QFN封装

The AD7982 is an 18-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7982 samples the voltage difference between the IN+ and IN- pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput.

The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply.The AD7982 is available in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from -40°C to +85°C.

AD7982是一款18位、逐次逼近型模数转换器（ADC）,采用单电源（VDD）供电。它内置一个低功耗、高速、18位采样ADC和一个多功能串行接口端口。在CNV上升沿,AD7982对IN+与IN-引脚之间的电压差进行采样,这两个引脚上的电压摆幅通常在0 V至V REF之间、相位相反。基准电压（REF）由外部提供,并且可以独立于电源电压（VDD）。其功耗和吞吐量呈线性变化关系。

SPI兼容串行接口还能够利用SDI输入,将几个ADC以菊花链形式连结到单三线式总线上,并提供一个可选的忙闲指示。采用独立电源VIO时,该器件与1.8V、2.5V、3V和5V逻辑兼容。

AD7982采用10引脚MSOP封装或10引脚QFN （LFCSP）封装,工作温度范围为-40°C至+85°C

产品应用领域 Applications

• Battery-powered equipment
• Data acquisition systems
• Medical instruments
• Seismic data acquisition systems
• 电池供电设备
• 数据采集系统
• 医疗仪器
• 地震数据采集系统

AD7982BCPZ-RL 特点

• 18-bit resolution with no missing codes
• Throughput: 1 MSPS
• INL: ±1 LSB typical, ±2 LSB maximum
• Low power dissipation
  7.0 mW at 1 MSPS
  70 μW at 10 kSPS
• True differential analog input range: ±VREF
  0 V to VREF with VREF between 2.5 V to 5.0 V
  Allows use of any input range
  Easy to drive with the ADA4941
• Dynamic range: 99 dB
• No pipeline delay
• Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
• Serial interface SPI(R)-/QSPITM-/MICROWIRETM-/DSP-compatible
• Ability to daisy-chain multiple ADCs and busy indicator
• 10-lead package: MSOP (MSOP-8 size) and 3 mm × 3 mm QFN (LFCSP), SOT-23 size
• 18位分辨率、无失码
• 呑吐量：1 MSPS
• 积分非线性（INL）：典型值±1 LSB,最大值±2 LSB
• 低功耗
  7.0 mW（1 MSPS）
  70 uW（10 kSPS）
• 真差分模拟输入范围：±VREF
  0 V至V REF（V REF在2.5 V至5.0 V之间）
  可使用任一输入范围
  可采用ADA4941轻松驱动
• 动态范围：99 dB
• 无流水线延迟
• 采用2.5 V单电源供电,含1.8 V/2.5 V/3 V/5 V逻辑接口
• 串行接口：
  SPI(R)-/QSPITM-/MICROWIRETM-/DSP-兼容
• 以菊花链形式连接多个ADC和忙闲指示功能
• 10引脚封装：MSOP（MSOP-8尺寸）和3 mm × 3 mm QFN （LFCSP）（SOT-23尺寸）

AD7982 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD7982BCPZ-RL	Prodn	10 ld LFCSP (3x3mm)	10	工业
AD7982BCPZ-RL7	Prodn	10 ld LFCSP (3x3mm)	10	工业
AD7982BRMZ	Prodn	10 ld MSOP	10	工业
AD7982BRMZRL7	Prodn	10 ld MSOP	10	工业

AD7982BCPZ-RL 应用技术支持与电子电路设计开发资源下载

1. AD7982 数据手册DataSheet下载. pdf
2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
3. ADC模数转换器选型指南 . PDF