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. Battery-powered equipment Medical instruments Mobile communications Personal digital assistants (PDAs) Data acquisition Instrumentation Process controls
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.
Data Sheet, Rev. B, 3/07
产品特点和性能优势1.4 μW @ 2.5 V/100 SPS 1.35 mW @ 2.5 V/100 kSPS, 4 mW @ 5 V/100 kSPS | 模数转换器 (ADC)AD7685 IBIS Models
参考电路
软件代码及系统需求
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| AD7685: 16-Bit, 250 kSPS PulSAR ADC in MSOP Data Sheet (Rev. D) | PDF 634 kB |
| 文档 | 备注 |
| 8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog | PDF 1885 kB |
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| 产品型号 | 封装 | 包装数量 | 温度范围 | 美金报价 100-499 | 美金报价 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD7685ACPZRL7 量产 | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 至 85至 | 0 | 6.58 | Y |
| AD7685ARMZ 量产 | 10 ld MSOP | OTH 50 | -40 至 85至 | 7.28 | 6.58 | Y |
| AD7685ARMZRL7 量产 | 10 ld MSOP | REEL 1000 | -40 至 85至 | 0 | 6.58 | Y |
| AD7685BCPZRL7 量产 | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 至 85至 | 0 | 8.1 | Y |
| AD7685BRMZ 量产 | 10 ld MSOP | OTH 50 | -40 至 85至 | 8.96 | 8.1 | Y |
| AD7685BRMZRL7 量产 | 10 ld MSOP | REEL 1000 | -40 至 85至 | 0 | 8.1 | Y |
| AD7685CCPZRL 最后一次采购 | 10 ld LFCSP (3x3mm) | REEL 5000 | -40 至 85至 | 0 | 9.72 | Y |
| AD7685CCPZRL7 量产 | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 至 85至 | 0 | 9.72 | Y |
| AD7685CRMZ 量产 | 10 ld MSOP | OTH 50 | -40 至 85至 | 10.75 | 9.72 | Y |
| AD7685CRMZRL7 量产 | 10 ld MSOP | REEL 1000 | -40 至 85至 | 0 | 9.72 | Y |
| 产品型号 | 描述 | 美金报价 | RoHS |
|---|---|---|---|
| EVAL-AD7685-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7685SDZ | Evaluation Board SDP Interface | 99 | Y |
| EVAL-AD7686-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7687-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7688-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7690-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7691-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7693-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7942-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7946-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7980-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7982-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7983-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7984-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7988-1-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-AD7988-5-PMDZ | Evaluation Board PMOD compatible form factor | 27 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board SDP | 99 | Y |
| SDP-PMD-IB1Z | Evaluation Interposer Board PMOD to SDP w/ Power Supply | 55 | Y |
