AD7923: 内置序列器的4通道、200 kSPS、12位模数转换器,采用16引脚TSSOP封装
AD7923是一款12位、高速、低功耗、4通道、逐次逼近型ADC,采用2.7 V至5.25 V单电源供电,最高吞吐量达200 kSPS。该器件内置一个低噪声、宽带宽采样/保持放大器,可处理8 MHz以上的输入频率。AD7923转换过程和数据采集过程通过CS和串行时钟信号进行控制,从而为器件与微处理器或DSP轻松接口创造了条件。输入信号在CS的下降沿进行采样,而转换同时在此处启动。该器件无流水线延迟。AD7923采用先进的设计技术,可在最高吞吐量下实现极低的功耗。在最高吞吐量下,采用3 V电源时,AD7923的功耗为0.85 mA；采用5V电源时,功耗为1 mA。
The AD7923 is a 12-bit, high speed, low power, 4-channel, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 200 kSPS. The part contains a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 8 MHz.
The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.The AD7923 uses advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7923 consumes 0.85 mA with 3 V supplies and, with 5V supplies, the current consumption is 1 mA.
AD7923 特性
- 高吞吐量：200 kSPS
- 额定电压（VDD）：2.7 V至5.25 V
- 低功耗：
- 最大1.95 mW（200 kSPS、3 V电源）
- 最大5 mW（200 kSPS、5 V电源） - 4个带序列器的（单端）输入
- 灵活的功耗/串行时钟速度管理
- 宽输入带宽：信噪比69.5 dB（50 kHz输入频率）
- 无流水线延迟
- 高速串行接口：SPI(R)/QSPITM/MICROWIRETM/DSP兼容
- 关断模式：最大0.5 uA
- 16引脚TSSOP封装
- Fast Throughput Rate: 200 kSPS
- Specified for VDD of 2.7 V to 5.25 V
- Low Power:
- 1.95 mW max at 200 kSPS with 3 V Supplies
- 5 mW max at 200 kSPS with 5 V Supplies - Four (Single Ended) Inputs with Sequencer
- Flexible Power/Serial Clock Speed Management
- Wide Input Bandwidth: 69.5 dB SNR at 50 kHz Input Frequency
- No Pipeline Delays
- High Speed Serial Interface SPI(R) /QSPITM /MICROWIRETM /DSP Compatible
- Shutdown Mode: 0.5 uA max
- 16-Pin TSSOP Package
AD7923 技术指标
- Resolution (Bits): 12bit
- # Chan: 4
- Sample Rate: 200kSPS
- Interface: Ser,SPI
- Analog Input Type: SE-Uni
- Ain Range: Uni (Vref),Uni (Vref) x 2
- ADC Architecture: SAR
- Pkg Type: SOP
AD7923 功能框图
AD7923 芯片订购指南
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7923BRU | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7923BRU-REEL | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7923BRU-REEL7 | 量产 | 16 ld TSSOP | 16 | 工业 |
| AD7923BRUZ | 量产 | 16 ld TSSOP | 16 | 商业 |
| AD7923BRUZ-REEL | 量产 | 16 ld TSSOP | 16 | 商业 |
| AD7923BRUZ-REEL7 | 量产 | 16 ld TSSOP | 16 | 商业 |
| EVAL-AD7923CBZ | 量产 | 评估板 | - | 待定 |
AD7923 应用技术支持与电子电路设计开发资源下载
- AD7923 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