ADS7945
- Sample Rate: 2 MSPS
- 14-Bit, Pin-Compatible with 8/10/12-bit ADS7947/8/9 Family (ADS7946)
- Outstanding Performance:
- SNR: 84 dB (ADS7945)
- No Missing Codes
- INL: 1.5 LSB (max) (ADS7945)
- Low Power:
- 11.6 mW at 2 MSPS Operation
- Auto Power-Down at Lower Speeds: 7.2 mW at 500 kSPS1.4 mW at 100 kSPS0.3 mW at 20 kSPS
- Wide Supply Range:
- Analog: 2.7 V to 5.25 V
- Digital: 1.65 V to AVDD
- Simple Serial Interface (SPI)
- Fully Specified from –40°C to +125°C
- Tiny Footprint: 3 mm × 3 mm QFN
The ADS7945/6 are 14-bit, 2 MSPS analog-to-digital converters (ADCs), with differential and single-ended inputs, respectively. The devices operate at a 2 MSPS sample rate with a standard 16-clock data frame. The devices feature both outstanding dc precision and excellent dynamic performance; the ADS7946 is pin-compatible with the 8/10/12-bit ADS7947/8/9 devices. The devices include a two-channel input multiplexer and a low-power successive approximation register (SAR) ADC with an inherent sample-and-hold (S/H) input stage.
The ADS7945/6 support a wide analog supply range that allows the full-scale input range to extend to ±5 V differential or 5 V single-ended. A simple SPI™, with a digital supply that can operate as low as 1.65 V, allows for easy interfacing to a wide variety of digital controllers. Automatic power-down can be enabled when operating at slower speeds to dramatically reduce power consumption.
Offered in a tiny 3 mm × 3 mm QFN package, the ADS7945/6 are fully specified over the extended temperature range of –40°C to +125°C and are suitable for a wide variety of data acquisition applications where high performance, low power, and small package size are key.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | 14-Bit, 2-MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power ADCs datasheet (Rev. B) | 2011年 9月 15日 | |
Circuit design | ±12-V voltage sensing circuit with an isolated amplifier and differential input (Rev. A) | PDF | HTML | 2024年 6月 6日 | |
EVM User's guide | ADS794xEVM and ADS794xEVM-PDK User Guide (Rev. B) | 2017年 9月 7日 | ||
E-book | Best of Baker's Best: Precision Data Converters -- SAR ADCs | 2015年 5月 21日 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 2 | 2011年 3月 17日 | ||
Application note | Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) | 2010年 11月 10日 |
設計與開發
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ADS7945EVM-PDK — ADS7945 性能展示套件
The ADS794xEVM-PDK is designed to evaluate the ADS7945 and ADS7946 analog-to-digital converters. These converters are 14-bit dual-channel differential SAR converters with a maximum throughput rate of 2MSPS. The ADS7945 offers fully-differential input voltages while the ADS7946’s pseudo (...)
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
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