Datasheet > TC850

TC850

更新时间： 2024-11-30 22:42:27

品牌	Logo	应用领域
TELCOM		转换器
页数	文件大小	规格书
14页	165K
描述
15-BIT, FAST-INTEGRATING CMOS ANALOG-TO-DIGITAL CONVERTER

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中文翻译

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TC850 数据手册

TC850

15-BIT, FAST-INTEGRATING CMOS ANALOG-TO-DIGITAL

CONVERTER

GENERAL DESCRIPTION

FEATURES

The TC850 is a monolithic CMOS analog-to-digital

converter (ADC) with resolution of 15-bits plus sign. It

combines a chopper-stabilized buffer and integrator with a

unique multiple-slope integration technique that increases

conversion speed. The result is 16 times improvement in

speed over previous 15-bit, monolithic integrating ADCs

(from 2.5 conversions per sec up to 40 per sec). Faster

conversion speed is especially welcome in systems with

human interface, such as digital scales.

The TC850 incorporates an ADC and a µP-compatible

digital interface. Only a voltage referenceand a few noncriti-

cal passive components are required to form a complete 15-

bit plus sign ADC.

CMOS processing provides the TC850 with high-

impedance differential inputs. Input bias current is typically

only 30pA, permitting direct interface to sensors. Input

sensitivity of 100µV per least significant bit (LSB) eliminates

the need for precision external amplifiers. The internal

amplifiersareauto-zeroed,guaranteeingazerodigitaloutput

with 0V analog input. Zero adjustment potentiometers or

calibrations are not required.

The TC850 outputs data on an 8-bit, 3-state bus. Digital

inputs are CMOS compatible; outputs are TTL/CMOS com-

patible. Chip-enable and byte-select inputs combined with

an end-of-conversion output ensures easy interfacing to a

wide variety of microprocessors. Conversions can be per-

formed continuously or on command. In continuous mode,

data is read as three consecutive bytes and manipulation of

address lines is not required.

■ 15-bit Resolution Plus Sign Bit

■ Up to 40 Conversions per Second

■ 12 Conversions per Second Guaranteed

■ Integrating ADC Technique

— Monotonic

— High Noise Immunity

— Auto-Zeroed Amplifiers Eliminate Offset

Trimming

■ Wide Dynamic Range ...................................... 96dB

■ Low Input Bias Current ................................... 30pA

■ Low Input Noise ........................................... 30µV_P-P

■ Sensitivity....................................................... 100µV

■ Flexible Operational Control

— Continuous or On-Demand Conversions

— Data Valid Output

■ Bus Compatible, 3-State Data Outputs

— 8-Bit Data Bus

— Simple µP Interface

— Two Chip Enables

— Read ADC Result Like Memory

■ ± 5V Power Supply Operation ...................... 20mW

■ 40-Pin Dual-in-Line or 44-Pin PLCC Packages

FUNCTIONAL BLOCK DIAGRAM

INT

REF

–5V

+5V

–

REF

INT OUT

BUF

INT IN

Operatingfrom±5Vsupplies, theTC850dissipatesonly

20mW. It is packaged in 40-pin plastic or ceramic dual-in-

line packages (DIPs) and in a 44-pin plastic leaded chip

carrier (PLCC), surface-mount package.

39 34 36

–

COMPARATOR

–

ANALOG

MUX

BUFFER

–

COMMON

INTEGRATOR

TC850

6-BIT

9-BIT

ORDERING INFORMATION

UP/DOWN UP/DOWN

COUNTER COUNTER

A/D

CONTROL

SEQUENCER

Part No.

Package

Temperature Range

DATA LATCH

÷4

TC850CLW

TC850CPL

TC850IJL

44-Pin PLCC

0°C to +70°C

BUS INTERFACE

DECODE LOGIC

OCTAL 2-INPUT MUX

CLOCK

OSCILLATOR

40-Pin Plastic DIP

40-Pin CerDIP

44-Pin PLCC

3-STATE DATA BUS

– 25°C to +85°C

TC850ILW

OSC

CONT/ L/H OVR/ WR RD CS CE

DEMAND POL

DB0

DB7

TC850-4 11/5/96

TELCOM SEMICONDUCTOR, INC.

3-77

12 3 4 5 6 7...14

中文翻译

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与TC850相关器件

型号	品牌	获取价格	描述	数据表
TC850_13	MICROCHIP	获取价格	15-Bit, Fast Integrating CMOS A/D Converter
TC8500	NXP	获取价格	Sistemas de Conmutador-Control Microprocesador-Base Allegiant
TC85011F	TOSHIBA	获取价格	IC CRT CHAR DSPL CTLR, PQFP100, 14 X 20 MM, PLASTIC, QFP-100, Display Controller
TC8505AF	TOSHIBA	获取价格	IC CRT CHAR DSPL CTLR, PQFP44, 14 X 14 MM, MINI, PLASTIC, QFP-44, Display Controller
TC8505AP	TOSHIBA	获取价格	IC CRT CHAR DSPL CTLR, PDIP40, 0.600 INCH, PLASTIC, DIP-40, Display Controller
TC8507M	TOSHIBA	获取价格	TC8507M
TC850CLW	MICROCHIP	获取价格	15-Bit, Fast Integrating CMOS A/D Converter
TC850CLW	TELCOM	获取价格	15-BIT, FAST-INTEGRATING CMOS ANALOG-TO-DIGITAL CONVERTER
TC850CLW713	MICROCHIP	获取价格	1-CH 15-BIT MULTI-SLOPE ADC, PARALLEL ACCESS, PQCC44
TC850CLWTR	MICROCHIP	获取价格	暂无描述

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