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ICL7135C Datasheet(PDF) 1 Page - Texas Instruments

Part No. ICL7135C
Description  4 1/2-DIGIT PRECISION ANALOG-TO-DIGITAL CONVERTERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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ICL7135C Datasheet(HTML) 1 Page - Texas Instruments

 
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ICL7135C, TLC7135C
4 1/2-DIGIT PRECISION
ANALOG-TO-DIGITAL CONVERTERS
SLAS074B – DECEMBER 1986 – REVISED MAY 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Zero Reading for 0-V Input
D Precision Null Detection With True Polarity
at Zero
D 1-pA Typical Input Current
D True Differential Input
D Multiplexed Binary-Coded-Decimal (BCD)
Output
D Low Rollover Error: ±1 Count Max
D Control Signals Allow Interfacing With
UARTs or Microprocessors
D Autoranging Capability With Over-and
Under-Range Signals
D TTL-Compatible Outputs
D Direct Replacement for Teledyne TSC7135,
Intersil ICL7135, Maxim ICL7135, and
Siliconix Si7135
D CMOS Technology
description
The ICL7135C and TLC7135C converters are manufactured with Texas Instruments highly efficient CMOS
technology. These 4 1/2-digit, dual-slope-integrating, analog-to-digital converters (DACs) are designed to
provide interfaces to both a microprocessor and a visual display. The digit-drive outputs D1 through D4 and
multiplexed binary-coded-decimal outputs B1, B2, B4, and B8 provide an interface for LED or LCD
decoder/drivers as well as microprocessors.
The ICL7135C and TLC7135C offer 50-ppm (one part in 20,000) resolution with a maximum linearity error of
one count. The zero error is less than 10
µV and zero drift is less than 0.5 µV/°C. Source-impedance errors are
minimized by low input current (less than 10 pA). Rollover error is limited to
±1 count.
The BUSY, STROBE, RUN/HOLD, OVER RANGE, and UNDER RANGE control signals support
microprocessor-based measurement systems. The control signals also can support remote data acquisition
systems with data transfer through universal asynchronous receiver transmitters (UARTs).
The ICL7135C and TLC7135C are characterized for operation from 0
°C to 70°C.
AVAILABLE OPTIONS
PACKAGE
TA
PLASTIC DIP
(N)
SMALL OUTLINE
(DW)
0
°Cto70°C
ICL7135CN
0
°C to 70°C
TLC7135CN
TLC7135CDW
Caution. These devices have limited built-in protection. The leads should be shorted together or the device placed in conductive foam
during storage or handlilng to prevent electrostatic damage to the MOS gates.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
© 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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VCC–
REF
ANLG COMMON
INT OUT
AUTO ZERO
BUFF OUT
Cref–
Cref+
IN –
IN +
VCC+
D5
B1
B2
UNDER RANGE
OVER RANGE
STROBE
RUN/HOLD
DGTL GND
POLARITY
CLK
BUSY
D1
D2
D3
D4
B8
B4
DW OR N PACKAGE
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