AD7685是一款16位、电荷再分配、逐次逼近型模数转换器(ADC),采用2.3 V至5.5 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,该器件对IN+与IN-之间的模拟输入电压差进行采样,范围从0 V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以菊花链形式连结到单三线式总线上,或提供一个可选的忙闲指示功能。采用独立电源VIO时,该器件与1.8V、2.5V、3V或5V逻辑兼容。AD7685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 AD7685 is a 16-bit, charge redistribution successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.3 V to 5.5 V. 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, it 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. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate supply VIO.The AD7685 is housed in a 10-lead MSOP or a 10-lead QFN (LFCSP) with operation specified from -40°C to +85°C.
产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
---|---|---|---|---|
AD7685ACPZRL | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685ACPZRL7 | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685ARM | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685ARMRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685ARMZ | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685ARMZRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685BCPZRL | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685BCPZRL7 | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685BRM | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685BRMRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685BRMZ | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685BRMZRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685CCPZRL | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685CCPZRL7 | Prodn | 10 ld LFCSP (3x3mm) | 10 | 工业 |
AD7685CRM | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685CRMRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685CRMZ | Prodn | 10 ld MSOP | 10 | 工业 |
AD7685CRMZRL7 | Prodn | 10 ld MSOP | 10 | 工业 |
EVAL-AD7685CBZ | Prodn | EVALUATION BOARDS | 10 | 工业 |