Datasheet > ADC12QS065EVAL

ADC12QS065EVAL

更新时间： 2024-11-26 08:18:47

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器
页数	文件大小	规格书
18页	691K
描述
Quad 12-Bit 65 MSPS A/D Converter with LVDS Serialized Outputs

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ADC12QS065EVAL 数据手册

PRELIMINARY

November 2005

ADC12QS065

Quad 12-Bit 65 MSPS A/D Converter with LVDS

Serialized Outputs

General Description

This is Preliminary Information for a product currently in

development. ALL specifications are design targets and

are subject to change.

Features

n Single +3.0V supply operation

n Internal sample-and-hold

n Internal reference

The ADC12QS065 is a low power, high performance CMOS

4-channel analog-to-digital converter with LVDS serialized

outputs. The ADC12QS065 digitizes signals to 12 bits reso-

lution at sampling rates up to 65 MSPS while consuming a

typical 200 mW/ADC from a single 3.0V supply. Sampled

data is transformed into high speed serial LVDS output data

streams. Clock and frame LVDS pairs aid in data capture.

The ADC12QS065’s six differential pairs transmit data over

backplanes or cable and also make PCB design easier. In

addition, the reduced cable, PCB trace count, and connector

size tremendously reduce cost.

n Low power consumption

n Power down mode

n Clock and Data Frame Timing

n 780 Mbps serial LVDS data rate (at 65 MHz clock)

n LVDS serial output rated for 100 Ohm load

Key Specifications

n Resolution

12 Bits

n DNL

0.3 LSB (typ)

68.5 dB (typ)

85 dB (typ)

n SNR (f_IN= 10 MHz)

n SFDR (f_IN= 10 MHz)

n ENOB (at Nyquist)

n Power Consumption

n -- Operating, 65 MSPS, per ADC

n -- Power Down Mode

No missing codes performance is guaranteed over the full

operating temperature range. The pipeline ADC architecture

11 Bits (typ)

achieves 11 Effective Bits over the entire Nyquist band at

65 MSPS.

200 mW (typ)

3 mW (typ)

The ADC12QS065 output pins can be put into a high imped-

ance state. The serializer PLL can lock to frequencies be-

tween 20 MHz and 65 MHz.

Applications

n Ultrasound

n Medical Imaging

n Communications

n Portable Instrumentation

n Digital Video

When not converting, power consumption can be reduced by

pulling the PD (Power Down) pin high, placing the converter

into a low power state where it typically consumes less than

3 mW total, and from which recovery is less than 5 ms. The

ADC12QS065’s speed, resolution and single supply opera-

tion makes it well suited for a variety of applications in

ultrasound, imaging, video and communications. Operating

over the industrial (-40˚C to +85˚C) temperature range, the

ADC12QS065 is available in a 64 pin TQFP package.

Connection Diagram

20106801

DS201068

www.national.com

12 3 4 5 6 7...18

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