Datasheet > ADC1061

ADC1061

更新时间： 2024-01-09 17:35:26

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
11页	323K
描述
10-Bit High-Speed レP-Compatible A/D Converter with Track/Hold Function

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技术参数
数据手册

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ADC1061 技术参数

生命周期：	Obsolete	包装说明：	DIE,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
最长转换时间：	1.8 µs	转换器类型：	ADC, FLASH METHOD
JESD-30 代码：	R-XUUC-N20	最大线性误差 (EL)：	0.19%
模拟输入通道数量：	1	位数：	10
功能数量：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
输出位码：	BINARY	输出格式：	PARALLEL, WORD
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	RECTANGULAR	封装形式：	UNCASED CHIP
认证状态：	Not Qualified	采样并保持/跟踪并保持：	TRACK
标称供电电压：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

ADC1061 数据手册

Typical Performance Characteristics

Zero (Offset) Error

vs Reference Voltage

Linearity Error vs

Reference Voltage

DS010559-9

DS010559-10

Mode 1 Conversion Time

vs Temperature

Mode 2 Conversion Time

vs Temperature

DS010559-11

DS010559-12

mate is then used to control the multiplexer that connects the

MSB Ladder to the sixteen comparators on the right. Note

that the comparators on the left needn’t be very accurate;

they simply provide an estimate of the input voltage. Only the

sixteen comparators on the right and the six on the left are

necessary to perform the initial six-bit flash conversion, in-

stead of the 64 comparators that would be required using

conventional half-flash methods.

Functional Description

The ADC1061 digitizes an analog input signal to 10 bits ac-

curacy by performing two lower-resolution “flash” conver-

sions. The first flash conversion provides the six most signifi-

cant bits (MSBs) of data, and the second flash conversion

provides the four least significant bits (LSBs).

Figure 3 is a simplified block diagram of the converter. Near

the center of the diagram is a string of resistors. At the bot-

tom of the string of resistors are 16 resistors, each of which

has a value 1/1024th the resistance of the whole resistor

string. These lower 16 resistors (the LSB Ladder) therefore

have a voltage drop of 16/1024, or 1/64th of the total refer-

ence voltage (V_REF+− VREF−) across them. The remainder

of the resistor string is made up of eight groups of eight resis-

tors connected in series. These comprise the MSB Ladder.

Each section of the MSB Ladder has 1/8th of the total refer-

ence voltage across it, and each of the MSB resistors has

1/64th of the total reference voltage across it. Tap points

across all of these resistors can be connected, in groups, to

the sixteen comparators at the right of the diagram.

To perform a conversion, the estimator compares the input

voltage with the tap voltages on the seven resistors on the

left. The estimator decoder then determines which MSB Lad-

der tap points will be connected to the sixteen comparators

on the right. For example, assume that the estimator deter-

mines that V_INis between 11/16 and 13/16 of VREF. The es-

timator decoder will instruct the comparator mux to connect

the 16 comparators to the taps on the MSB Ladder between

10/16 and 14/16 of VREF. The 16 comparators will then per-

form the first flash conversion. Note that since the compara-

tors are connected to Ladder voltages that extend beyond

the range indicated by the estimator circuit, errors in the es-

timator as large as 1/16 of the reference voltage (64 LSBs)

will be corrected. This first flash conversion produces the six

most significant bits of data.

On the left side of the diagram is a string of seven resistors

connected between V_REF+− V_REF−. Six comparators com-

pare the input voltage with the tap voltages on the resistor

string to provide an estimate of the input voltage. This esti-

www.national.com

1...3 4 567 8 9...11

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与ADC1061相关器件

型号	品牌	描述	获取价格	数据表
ADC1061CIJ	TI	10-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP20, CERAMIC, DIP-20	获取价格
ADC1061CIJ	NSC	IC 10-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP20, CERAMIC, DIP-20, Analog to Digital Co	获取价格
ADC1061CIN	NSC	10-Bit High-Speed レP-Compatible A/D Converter	获取价格
ADC1061CIN/NOPB	ROCHESTER	1-CH 10-BIT FLASH METHOD ADC, PARALLEL ACCESS, PDIP20, DIP-20	获取价格
ADC1061CIWM	NSC	10-Bit High-Speed レP-Compatible A/D Converter	获取价格
ADC1061CIWMX	ETC	Analog-to-Digital Converter， 10-Bit	获取价格

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