GENERAL DESCRIPTION

The AD7273/AD7274 are 10-/12-bit, high speed, low power, successive approximation ADCs, respectively. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. Each part contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 MHz.

The AD7273/AD7274 use advanced design techniques to achieve very low power dissipation at high throughput rates.

The reference for the parts is applied externally and can be in the range of 1.4 V to VDD. This allows the widest dynamic input range to the ADC.

FEATURES

Throughput rate: 3 MSPS

Specified for VDD of 2.35 V to 3.6 V

Power consumption

11.4 mW at 3 MSPS with 3 V supplies

Wide input bandwidth

70 dB SNR at 1 MHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface

SPI?-/QSPI?-/MICROWIRE?-/DSP-compatible

Temperature range: ?40°C to +125°C

Power-down mode: 0.1 μA typ

8-lead TSOT package

8-lead MSOP package

AD7277屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7277模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對(duì)模擬信號(hào)進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號(hào)。一般來說，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。