The AD7866 is a dual 12-bit high-speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 10 MHz.
The conversion process and data acquisition are controlled using standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. There are no pipelined delays with the part.
The AD7866 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 3 V supplies and 1 MSPS throughput rate, the part consumes a maximum of 3.8 mA. With 5 V supplies and 1 MSPS, the current consumption is a maximum of 4.8 mA. The part also offers flexible power/throughput rate management when operating in sleep mode.
AD7866是一款双核、12位、高速、低功耗、逐次逼近型ADC,采用单电源工作,电源电压为2.7 V至5.25 V,最高吞吐量可达1 MSPS。该器件内置两个ADC,两者之前均配有一个低噪声、宽带宽采样保持放大器,可处理10 MHz以上的输入频率。
转换过程和数据采集过程均通过标准控制输入进行控制,可与微处理器或DSP轻松连接。输入信号在CS的下降沿进行采样,而转换同时在此处启动。转换时间取决于SCLK频率。该器件无流水线延迟。
AD7866采用先进的设计技术,可在高吞吐量的情况下实现极低的功耗。当电源电压为3 V、吞吐量为1 MSPS时,最大功耗为3.8 mA。当电源电压为5 V、吞吐量为1 MSPS时,最大功耗为4.8 mA。在休眠模式下工作时,还提供灵活的功耗/吞吐量管理功能
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD7866ARU | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866ARU-REEL7 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866ARUZ | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866ARUZ-REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866ARUZ-REEL7 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866BRU | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866BRU-REEL7 | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866BRUZ | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866BRUZ-REEL | 量产 | 20 ld TSSOP | 20 | 工业 |
| AD7866BRUZ-REEL7 | 量产 | 20 ld TSSOP | 20 | 工业 |
| EVAL-AD7866CBZ | 量产 | EVALUATION BOARDS | - | TBD |