ADCS7478 - 采用 SOT-23 和 LLP 封装的 1MSPS、12-/10-/8 位 A/D 转换器

ADCS7478是TI德州仪器公司的一款精密ADC(<=10MSPS)产品，ADCS7478是采用 SOT-23 和 LLP 封装的 1MSPS、12-/10-/8 位 A/D 转换器，本站介绍了ADCS7478的封装应用图解、特点和优点、功能等，并给出了与ADCS7478相关的TI元器件型号供参考。

ADCS7478 - 采用 SOT-23 和 LLP 封装的 1MSPS、12-/10-/8 位 A/D 转换器 - 精密ADC(<=10MSPS) - 模数转换器 - 德州仪器

产品描述

The ADCS7476, ADCS7477, and ADCS7478 are low power, monolithic CMOS 12-, 10- and 8-bit analog-to-digital converters that operate at 1 MSPS. The ADCS7476/77/78 are drop-in replacements for Analog Devices' AD7476/77/78. Each device is based on a successive approximation register architecture with internal track-and-hold. The serial interface is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces.

The ADCS7476/77/78 uses the supply voltage as a reference, enabling the devices to operate with a full-scale input range of 0 to VDD. The conversion rate is determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption. The ADCS7476/77/78 is operated with a single supply that can range from +2.7V to +5.25V. Normal power consumption during continuous conversion, using a +3V or +5V supply, is 2 mW or 10 mW respectively. The power down feature, which is enabled by a chip select (CS) pin, reduces the power consumption to under 5 µW using a +5V supply. All three converters are available in a 6-lead, SOT-23 package and in a 6-lead WSON, both of which provide an extremely small footprint for applications where space is a critical consideration. These products are designed for operation over the automotive/extended industrial temperature range of −40°C to +125°C.

产品特性

Variable Power Management
Packaged in 6-Lead, SOT-23 and WSON
Power Supply used as Reference
Single +2.7V to +5.25V Supply Operation
SPI™/QSPI™/MICROWIRE™/DSP Compatible

Key Specifications

Resolution with no Missing Codes 12/10/8 bits
Conversion Rate 1 MSPS
DNL +0.5, -0.3 LSB (typ)
INL ± 0.4 LSB (typ)
Power Consumption
- 3V Supply 2 mW (typ)
- 5V Supply 10 mW (typ)

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