AD7654: 双通道、同步采样、PulSAR®、500 kSPS、双核16位ADC
AD7654是一款低成本、双核16位、电荷再分配SAR型模数转换器（ADC）,采用5 V单电源供电。该器件内置两个低噪声、宽带宽、可同步采样的采样/保持放大器、一个16位高速采样ADC、一个内部转换时钟、纠错电路以及串行和并行系统接口端口。AD7654经过出厂硬件校准和全面测试,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）和总谐波失真（THD）等交流参数也合乎要求。该器件具有一种极高采样速率模式（正常模式）和一种低功耗模式（脉冲模式）,后者适用于低功耗应用,功耗与吞吐量呈比例关系。该器件采用48引脚LQFP或48引脚LFCSP封装,工作温度范围为-40°C至+85°C。
The AD7654 is a low cost, dual, 16-bit, charge redistribution SAR, Analog-to-Digital Converter which operates from a single 5 V power supply. It contains two low noise, wide bandwidth track/hold amplifiers which allow simultaneous sampling, a high-speed 16-Bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.The AD7654 is hardware factory calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.It features a very high sampling rate mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput. It is available in a 48-lead LQFP or a 48-lead LFCSP with operation specified from –40°C to +85°C.
AD7654 特点
- 双核16位、双通道同时采样ADC
- 16位分辨率、无失码
- 吞吐量：500 kSPS（正常模式）;444 kSPS（脉冲模式）
- 积分非线性（INL）：最大值±2.5 LSB（满量程的±0.0038%）
- 信噪比：90 dB（典型值,100 kHz时）
- 总谐波失真：-96 dB（100 kHz时）
- 模拟输入电压范围：0 V至5 V
- 无流水线延迟
- 并行和串行5 V/3 V接口
- SPI®/QSPI™/MICROWIRE™/DSP 兼容
- 采用5 V单电源供电
- 功耗：典型值为115 mW,100 SPS时为15 µW
- Dual, 16-Bit, 2-channel Simultaneous Sampling ADC
- 16 Bits Resolution with No Missing Codes
- Throughput:500 kSPS (Normal Mode) ;444 kSPS (Impulse Mode)
- INL: ±2.5 LSB Max (±0.0038% of Full-Scale)
- SNR: 90 dB Typ @ 100 kHz
- THD: -96 dB @ 100 kHz
- Analog Input Voltage Range: 0 to 5 V
- No Pipeline Delay
- Parallel and Serial 5 V/3 V Interface
- SPI®/QSPI™/MICROWIRE™/DSP Compatible
- Single 5 V Supply Operation
- Power Dissipation: 115 mW Typical, 15 µW @ 100 SPS
AD7654 技术指标
- Resolution (Bits): 16bit
- # Chan: 4
- Sample Rate: 500kSPS
- Interface: Par,Ser,SPI
- Analog Input Type: SE-Uni
- Ain Range: Uni (Vref) x 2,Uni 5.0V
- ADC Architecture: SAR
- Pkg Type: CSP,QFP
AD7654 建议配套产品
- 推荐AD7654使用的驱动放大器
- 推荐AD7654使用的高精度、精密基准电压源(2.5V)
- 推荐AD7654使用的电压调节器
- 推荐电源解决方案
- 欲选择电压调节器产品，请使用 ADIsimPower。
- 欲选择电源监控器产品，请使用 电源监控器参数搜索。
AD7654 功能框图
AD7654 芯片订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7654ACP | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD7654ACPRL | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD7654ACPZ | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD7654ACPZRL | Prodn | 48 ld LFCSP 7x7mm (5.25EP) | 48 | 工业 |
| AD7654AST | Prodn | 48 ld LQFP | 48 | 工业 |
| AD7654ASTRL | Prodn | 48 ld LQFP | 48 | 工业 |
| AD7654ASTZ | Prodn | 48 ld LQFP | 48 | 工业 |
| AD7654ASTZRL | Prodn | 48 ld LQFP | 48 | 工业 |
| EVAL-AD7654CB | Prodn | Evaluation Boards | - | 工业 |
| EVAL-AD7654CBZ | Prodn | EVALUATION BOARDS | - | 工业 |
AD7654 应用技术支持与电子电路设计开发资源下载
- AD7654 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
