AD7622: 16位、1.5 LSB INL、2 MSPS PulSAR® ADC
AD7622是一款16位、2 MSPS、电荷再分配SAR型、全差分模数转换器（ADC）,采用2.5 V单电源供电。该器件内置一个16位高速采样ADC、一个内部转换时钟、一个内部基准电压源（和缓冲）、纠错电路,以及串行和并行系统接口端口。它具有两种极高采样速率模式（宽带warp模式和warp模式）和一种快速模式（正常模式）,后者适用于异步速率应用。AD7622经过出厂硬件校准和测试,可确保除一般直流参数（增益、偏置和线性度）之外,诸如信噪比(SNR)等交流参数也合乎要求。AD7622只提供无铅封装,工作温度范围为−40°C至+85°C。
The AD7622 is a 16-bit, 2 MSPS, charge redistribution SAR, fully differential, analog-to-digital converter (ADC) that operates from a single 2.5 V power supply. The part contains a high speed, 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. It features two very high sampling rate modes (wideband warp and warp) and a fast mode (normal) for asynchronous rate applications. The AD7622 is hardware factory calibrated and tested to ensure ac parameters, such as signal-to-noise ratio (SNR), in addition to the more traditional dc parameters of gain, offset, and linearity. The AD7622 is available in Pb-free only packages with operation specified from −40°C to +85°C.
AD7622 特点
- 吞吐量
- 2 MSPS（宽带warp和warp模式）
- 1.5 MSPS（正常模式） - 积分非线性（INL）：典型值±0.5 LSB，最大值±1.5 LSB（FSR为±23 ppm）
- 16位分辨率、无失码
- 动态范围：典型值92.5 dB
- 信纳比：最小值91 dB（20 kHz, VREF = 2.5 V时）
- 总谐波失真：典型值−115 dB（20 kHz，VREF= 2.5 V时)
- 2.048 V内部基准电压：典型漂移量为8 ppm/°C；TEMP输出
- 差分输入范围：±VREF （VREF 最高为2.5 V）
- 无流水线延迟（SAR架构）
- 并行（16位或8位总线）和串行5 V/3.3 V/2.5 V接口
- SPI®/QSPI™/MICROWIRE™/DSP 兼容
- 采用2.5 V单电源供电
AD7622 技术指标
- Resolution (Bits): 16bit
- # Chan: 1
- Sample Rate: 2MSPS
- Interface: Byte,Par,Ser,SPI
- Analog Input Type: Diff-Uni
- Ain Range: (2Vref) p-p
- ADC Architecture: SAR
- Pkg Type: CSP,QFP
AD7622 应用领域
- 医疗仪器
- 高速数据采集/高动态数据采集
- 数字信号处理
- 频谱分析
- 仪器仪表
- 通信
- 自动测试设备
AD7622 建议配套产品
- Recommended Driver Amplifiers for the AD7622
- For low noise, high gain bandwidth, we suggest the AD8021, ADA4899-1 or the dual AD8022, ADA4899-2.
- For low bias current, low frequency, we recommend the AD8610.
- For single-ended to differential driver applications, we recommend AD8139 or the ADA4930-1.
- For a fully differential attenuating precision amplifier, we recommend the AD8475.
- For low noise, low distortion, low power, we recommend the ADA4841-1.
- Recommended External Voltage References (2.5V) for the AD7622
- Recommended External Voltage References (1.2V) for the AD7622
- Recommended Power Solutions
- For selecting voltage regulator products, use ADIsimPower.
- For selecting supervisor products, use the Supervisor Parametric Search.
AD7622 功能框图
AD7622 芯片订购指南
| 产品型号 | 产品状态 | 封装 | Pins | 报价* (1000 pcs.) |
|---|---|---|---|---|
| AD7622BCPZ | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | $ 26.95 |
| AD7622BCPZRL | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | $ 26.95 |
| AD7622BSTZ | Prodn | 48 ld LQFP | 48 | $ 26.95 |
| AD7622BSTZRL | Prodn | 48 ld LQFP | 48 | $ 26.95 |
| EVAL-AD7622CB | Prodn | EVALUATION BOARDS | - | $ 150.00 |
| EVAL-AD7622CBZ | Prodn | EVALUATION BOARDS | - | $ 150.00 |
