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VFC101KN PDF预览

VFC101KN

更新时间: 2024-01-28 15:42:06
品牌 Logo 应用领域
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页数 文件大小 规格书
10页 130K
描述
Synchronized VOLTAGE-TO-FREQUENCY CONVERTER

VFC101KN 数据手册

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®
VFC101  
Synchronized  
VOLTAGE-TO-FREQUENCY CONVERTER  
FEATURES  
DESCRIPTION  
FULL-SCALE FREQUENCY SET BY  
The VFC101 voltage-to-frequency converter uses the  
proven charge-balance technique with internal digital  
logic to control the critical reference integration pe-  
riod. Reference timing is derived from an external  
clock signal which accurately sets the full-scale fre-  
quency. This technique eliminates the errors and drift  
from external timing components which are required  
with other VFCs.  
SYSTEM CLOCK  
MULTIPLE INPUT RANGES:  
5V, 8V, 10V Full Scale  
ACCURATE 5V REFERENCE VOLTAGE  
LOW NONLINEARITY:  
0.02% max at 100kHz FS  
LOW GAIN DRIFT: 40ppm/°C  
Internal resistors provide accurate full-scale input  
ranges of 5V, 8V or 10V inputs without external  
resistors or trimming. An accurate 5V reference volt-  
age output is useful for bridge or sensor excitation.  
With simple pin interconnections, it can provide half-  
scale offset to allow bipolar input voltages.  
APPLICATIONS  
INTEGRATING A/D CONVERTER  
MULTICHANNEL DATA ACQUISITION  
FREQUENCY-TO-VOLTAGE CONVERSION  
VOLTAGE ISOLATION  
The open-collector frequency output interfaces easily  
to CMOS or TTL circuitry. Output one-shot circuitry  
may be used to optimize the output pulse width for  
optical couplers or transformers.  
The VFC101 is packaged in a surface-mount 20-pin  
PLCC (plastic leaded chip carrier) package.  
+VCC  
2
8
5
4
17  
13  
14  
10k  
10kΩ  
Integrator  
Comparator  
Clocked  
Logic  
Output  
One-Shot  
7
9
15  
16kΩ  
4kΩ  
1mA  
I1  
10  
6
5V  
Reference  
–VCC  
18  
11  
–VCC  
16  
20  
12  
International Airport Industrial Park  
Mailing Address: PO Box 11400  
Cable: BBRCORP  
Tucson, AZ 85734  
Street Address: 6730 S. Tucson Blvd.  
Tucson, AZ 85706  
Tel: (520) 746-1111 Twx: 910-952-1111  
Telex: 066-6491  
FAX: (520) 889-1510  
Immediate Product Info: (800) 548-6132  
© 1988 Burr-Brown Corporation  
PDS-779B  
Printed in U.S.A. October, 1993  

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