TC826CBUTR

更新时间： 2024-01-02 20:38:33

品牌	Logo	应用领域
美国微芯 - MICROCHIP		转换器
页数	文件大小	规格书
18页	473K
描述
1-CH DUAL-SLOPE ADC, PQFP64, PLASTIC, QFP-64

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中文翻译

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技术参数
数据手册

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TC826CBUTR 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	QFP	包装说明：	QFP, QFP64,.66SQ,32
针数：	64	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.7	最大模拟输入电压：	2 V
转换器类型：	ADC, DUAL-SLOPE	JESD-30 代码：	S-PQFP-G64
JESD-609代码：	e3	长度：	14 mm
最大线性误差 (EL)：	2.5%	模拟输入通道数量：	1
功能数量：	1	端子数量：	64
最高工作温度：	70 °C	最低工作温度：
输出位码：	BINARY	封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP	封装等效代码：	QFP64,.66SQ,32
封装形状：	SQUARE	封装形式：	FLATPACK
峰值回流温度（摄氏度）：	260	电源：	9 V
认证状态：	Not Qualified	座面最大高度：	3.3 mm
子类别：	Analog to Digital Converters	标称供电电压：	9 V
表面贴装：	YES	技术：	BIPOLAR
温度等级：	COMMERCIAL	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	40
宽度：	14 mm	Base Number Matches：	1

TC826CBUTR 数据手册

TC826

Analog-to-Digital Converter with Bar Graph Display Output

Features

General Description

• Bipolar A/D Conversion

In many applications, a graphical display is preferred

over a digital display. Knowing a process or system

operates, for example, within design limits is more valu-

able than a direct system variable read out. A bar or

moving dot display supplies information precisely with-

out requiring further interpretation by the viewer.

• 2.5% Resolution

• Direct LCD Display Drive

• ‘Thermometer’ BAR or DOT Display

• 40 Data Segments Plus Zero

• Over Range Plus Polarity Indication

• Precision On-Chip Reference: 35ppm/°C

• Differential Analog Input

The TC826 is a complete analog-to-digital converter

with direct liquid crystal (LCD) display drive. The 40

LCD data segments plus zero driver give a 2.5% reso-

lution bar display. Full scale differential input voltage

range extends from 20mV to 2V. The TC826 sensitivity

is 500µV. A low drift 35ppm/°C internal reference, LCD

backplane oscillator and driver, input polarity LCD

driver, and over range LCD driver make designs simple

and low cost. The CMOS design required only 125µA

from a 9V battery. In +5V systems, a TC7660 DC to DC

converter can supply the -5V supply. The differential

analog input leakage is a low 10pA.

• Low Input Leakage: 10pA

• Display Flashes on Over Range

• Display HOLD Mode

• Auto-Zero Cycle Eliminates Zero Adjust

Potentiometer

• 9V Battery Operation

• Low Power Consumption: 1.1mW

• 20mV to 2.0V Full Scale Operation

• Non-Multiplexed LCD Drive for Maximum

Viewing Angle

Two display formats are possible. The BAR mode dis-

play is like a ‘thermometer’ scale. The LCD segment

driver that equals the input, plus all below it are on. The

DOT mode activates only the segment equal to the

input. In either mode, the polarity signal is active for

negative input signals. An over range input signal

causes the display to flash and activates the over range

annunciator. A HOLD mode can be selected that

freezes the display and prevents updating.

Device Selection Table

Part Number

Package

Temperature Range

TC826CBU

64-Pin PQFP

0°C to +70°C

The dual slope integrating conversion method with

auto-zero phase maximizes noise immunity and elimi-

nates zero scale adjustment potentiometers. Zero

scale drift is a low 5µV/°C. Conversion rate is typically

5 per second and is adjustable by a single external

resistor.

A compact, 0.5" square, flat package minimizes PC

board area. The high pin count LSI package makes

multiplexed LCD displays unnecessary. Low cost,

direct drive LCD displays offer the widest viewing angle

and are readily available. A standard display is avail-

able now for TC826 prototyping work.

2002 Microchip Technology Inc.

DS21477B-page 1

12 3 4 5 6 7...18

中文翻译

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