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TC850ILW

更新时间： 2024-10-01 22:33:47
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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TC850ILW 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：PLASTIC, LCC-44Reach Compliance Code：unknown
风险等级：5.73Is Samacsys：N
最大模拟输入电压：3.28 V转换器类型：ADC, MULTI-SLOPE
JESD-30 代码：S-PQCC-J44JESD-609代码：e0
最大线性误差 (EL)：0.0061%标称负供电电压：-5 V
模拟输入通道数量：1位数：15
功能数量：1端子数量：44
最高工作温度：85 °C最低工作温度：-25 °C
输出位码：BINARY输出格式：PARALLEL, 8 BITS
封装主体材料：PLASTIC/EPOXY封装代码：QCCJ
封装等效代码：LDCC44,.7SQ封装形状：SQUARE
封装形式：CHIP CARRIER电源：+-5 V
认证状态：Not Qualified子类别：Analog to Digital Converters
最大压摆率：3.5 mA标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：OTHER端子面层：Tin/Lead (Sn/Pb)
端子形式：J BEND端子节距：1.27 mm
端子位置：QUADBase Number Matches：1

TC850ILW 数据手册

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3
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 ........................................... 30µVP-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  
C
R
INT  
INT  
+
REF  
2
–5V  
22  
+5V  
40  
+
–
REF  
REF  
1
INT OUT  
23  
BUF  
25  
INT IN  
24  
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  
–
+
+
–
32  
31  
30  
IN  
IN  
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  
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  
– 25°C to +85°C  
7
6
3
4
1
2
.
.
.
.
8
17  
18  
5
15  
TC850ILW  
OSC  
OSC  
CONT/ L/H OVR/ WR RD CS CE  
DEMAND POL  
DB0  
DB7  
1
2
TC850-4 11/5/96  
TELCOM SEMICONDUCTOR, INC.  
3-77  
1234567...14

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