ADS52J91屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由美國德州儀器公司制造生產(chǎn)的ADS52J91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。

1 Features

? 16-Channel ADC configurable to convert

8, 16, or 32 inputs

? Maximum ADC Conversion Rate:

– 125 MSPS in 10-bit mode

– 100 MSPS in 12-bit mode

– 65 MSPS in 14-bit mode

? Supplies: 1.2 V, 1.8 V

? Differential or single-ended input Clock

? Signal-to-noise ratio (SNR):

– 61 dBFS in 10-bit mode

– 69 dBFS in 12-bit mode

– 73.5 dBFS in 14-Bit Mode

? Power at 125 MSPS: 48.6 mW/channel

? 16 ADCs configurable to convert:

– 8 Inputs with a sampling rate of a 2X ADC

conversion rate

– 16 Inputs with a sampling rate of a 1X ADC

conversion rate

– 32 Inputs with a sampling rate of a 0.5X ADC

conversion rate

? 1 Gbps LVDS interface with 16X, 14X, 12X, and

10X serialization

? 5 Gbps JESD interface:

– JESD204B Subclass 0, 1, and 2

– 2, 4, or 8 Channels per JESD lane

? Package: NFBGA-198 (9 mm × 15 mm)

2 Applications

? Ultrasound imaging

? Portable instrumentation

? Sonar and Radar

? High-speed multichannel data acquisition

3 Description

The ADS52J91 is a low-power, high-performance,

16-channel, analog-to-digital converter (ADC). The

conversion rate of each ADC goes up to a maximum

of 125 MSPS in 10-bit mode. The maximum

conversion rate reduces when the ADC resolution is

set to a higher value.

The device can be configured to accept 8, 16, or

32 inputs. In 32-input mode, each ADC alternately

samples and converts two different inputs each at

an effective sampling rate that is half of the ADC

conversion rate. In 8-bit input mode, two ADCs

convert the same input in an interleaved manner,

resulting in an effective sampling rate that is twice the

ADC conversion rate. The ADC is designed to scale

its power with the conversion rate.