AD7686BRMZ: 16位、500 kSPS PulSAR(R) ADC,采用MSOP或QFN封装
AD7686是一款16位、电荷再分配、逐次逼近型模数转换器（ADC）,采用5 V单电源（VDD）供电。该器件内置一个低功耗、高速、16位无失码采样ADC、一个内部转换时钟和一个多功能串行接口端口,还集成了一个低噪声、宽带宽、短孔径延迟的采样保持电路。在CNV上升沿,AD7686对IN+与IN-之间的模拟输入电压差进行采样,范围从0V至REF。基准电压（REF）由外部提供,最高可设置为电源电压。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以菊花链形式联结到单三线式总线上,或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或5V逻辑兼容。AD7686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。
The AD7686 is a 16-bit, charge redistribution, successive approximation, analog-to-digital converter (ADC) that operates from a single 5 V power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, the AD7686 samples an analog input IN+ between 0 V to REF with respect to a ground sense IN-. The reference voltage, REF, is applied externally and can be set up to the supply voltage.Power dissipation 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 or provides an optional busy indicator. This device is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from -40°C to +85°C.
产品应用领域 Applications
- 电池供电设备
- 数据采集
- 仪器仪表
- 医疗仪器
- 过程控制
产品应用领域 Applications
- Battery-powered equipment
- Data acquisitions
- Instrumentation
- Medical instruments
- Process controls
AD7686BRMZ 特点
- 16位分辨率、无失码
- 吞吐量：500 kSPS
- 积分非线性（INL）：典型值±0.6 LSB,最大值±2 LSB（FSR的±0.003%）
- 信纳比（SINAD）：92.5 dB（20 kHz 时）
- 总谐波失真（THD）：-110 dB（20 kHz 时）
- 伪差分模拟输入范围：0 V～VREF（VREF最高为VDD）
- 无流水线延迟
- 单电源工作：5 V,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
- 以菊花链形式联接多个ADC和忙闲指示功能
- 功耗：
3.75 μW @ 5 V/100 SPS
3.75 mW @ 5 V/100 kSPS - 待机电流：1 nA
- 16-bit resolution with no missing codes
- Throughput: 500 kSPS
- INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR)
- SINAD: 92.5 dB @ 20 kHz
- THD: -110 dB @ 20 kHz
- Pseudo differential analog input range 0 V to VREF with VREF up to VDD
- No pipeline delay
- Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
- Serial interface SPI(R)-/QSPITM-/MICROWIRETM-/DSP-compatible
- Daisy-chain multiple ADCs and busy indicator
- Power dissipation
3.75 μW @ 5 V/100 SPS
3.75 mW @ 5 V/100 kSPS - Standby current: 1 nA
AD7686BRMZ 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7686BCPZRL | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
| AD7686BCPZRL7 | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
| AD7686BRM | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686BRMRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686BRMZ | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686BRMZRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686CCPZRL | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
| AD7686CCPZRL7 | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
| AD7686CRM | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686CRMRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686CRMZ | Prodn | 10 ld MSOP | 10 | 工业 |
| AD7686CRMZRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
| EVAL-AD7686CBZ | Prodn | EVALUATION BOARDS | 10 | 工业 |
AD7686BRMZ 应用技术支持与电子电路设计开发资源下载
- AD7686 数据手册DataSheet下载. pdf
- Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .PDF
- ADC模数转换器选型指南 . PDF