GENERAL DESCRIPTION

The AD7625 is a 16-bit, 6 MSPS, charge redistribution successive approximation register (SAR) based architecture analog-to-digital converter (ADC). SAR architecture allows unmatched performance both in noise (93 dB SNR) and in linearity (1 LSB). The AD7625 contains a high speed, 16-bit sampling ADC, an internal conversion clock, and an internal buffered reference. On the CNV± rising edge, it samples the voltage difference between the IN+ and IN? pins. The voltages on these pins swing in opposite phase between 0 V and REF. The 4.096 V reference voltage, REF, can be generated internally or applied externally.

FEATURES

?? Throughput: 6 MSPS

?? SNR: 93 dB

?? INL: ±0.45 LSB typical, ±1 LSB maximum

?? DNL: ±0.3 LSB typical, ±0.5 LSB maximum

?? Power dissipation: 135 mW

?? 32-lead LFCSP (5 mm × 5 mm)

?? SAR architecture

????? No latency/no pipeline delay

?? 16-bit resolution with no missing codes

?? Zero error: ±1.5 LSB

?? Differential input voltage: ±4.096 V

?? Serial LVDS interface

????? Self-clocked mode

????? Echoed-clock mode

????? Can use LVDS or CMOS for conversion control (CNV signal)

?? Reference options

????? Internal: 4.096 V

????? External (1.2 V) buffered to 4.096 V

????? External: 4.096 V

??

APPLICATIONS

?? High dynamic range telecommunications

?? Receivers

?? Digital imaging systems

?? High speed data acquisition

?? Spectrum analysis

?? Test equipment

AD7984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AD7984模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進(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。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。