TLC7135CDW

Manufacturer Part NumberTLC7135CDW
DescriptionIC 4-1/2 DIGIT A/D CONV 28-SOIC
ManufacturerTexas Instruments
TLC7135CDW datasheet
 


Specifications of TLC7135CDW

Display TypeLED, LCDInterfaceBCD
Digits Or CharactersA/D 4.5 DigitsVoltage - Supply4 V ~ 6 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case28-SOIC (7.5mm Width)Lead Free Status / RoHS StatusLead free / RoHS Compliant
Current - Supply-Configuration-
Other names296-2185-5  
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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
Second Source to 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 (ADCs) 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 V and zero drift is less than 0.5 V/ 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.
T A
0 C to 70 C
0 C to 70 C
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.
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.
ANALOG TO DIGITAL CONVERTERS
SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003
V
CC −
REF
ANLG COMMON
INT OUT
AUTO ZERO
BUFF OUT
C
ref −
C
ref +
IN −
IN +
V
CC +
AVAILABLE OPTIONS
PACKAGE
PLASTIC DIP
SMALL OUTLINE
(N)
(DW)
ICL7135CN
TLC7135CN
TLC7135CDW
Copyright
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ICL7135C, TLC7135C
4 1/2 DIGIT PRECISION
DW OR N PACKAGE
(TOP VIEW)
UNDER RANGE
1
28
OVER RANGE
2
27
STROBE
3
26
RUN/HOLD
4
25
DGTL GND
5
24
POLARITY
6
23
CLK
7
22
8
21
BUSY
9
20
D1
10
19
D2
11
18
D3
12
17
D5
D4
13
16
B1
B8
14
15
B2
B4
1999−2003, Texas Instruments Incorporated
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TLC7135CDW Summary of contents

  • Page 1

    ... BUFF OUT C ref − C ref + IN − AVAILABLE OPTIONS PACKAGE PLASTIC DIP SMALL OUTLINE (N) (DW) ICL7135CN TLC7135CN TLC7135CDW Copyright POST OFFICE BOX 655303 DALLAS, TEXAS 75265 ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION PACKAGE (TOP VIEW) UNDER RANGE 1 28 OVER RANGE 2 27 STROBE 3 26 ...

  • Page 2

    ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003 FUNCTIONAL BLOCK DIAGRAM 23 POLARITY Polarity From Analog Flip-Flop Section Zero Cross Detect 22 CLK 25 RUN/HOLD 27 OVER RANGE 28 UNDER ...

  • Page 3

    ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range unless otherwise noted (1) Supply voltage (V CC+ with respect − ) Analog input voltage (IN − Reference voltage range Clock input voltage range Operating free-air ...

  • Page 4

    ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003 OPERATING CHARACTERISTICS − ref = clock = ...

  • Page 5

    Digital Scan for OVER-RANGE 1000 Counts Integrator Output AUTO ZERO Signal Int 10,000 10,001 Counts Counts Full Measurement Cycle BUSY OVER RANGE When Applicable UNDER RANGE When Applicable POST OFFICE BOX 655303 ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 ...

  • Page 6

    ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003 STROBE AUTO ZERO Digit Scan D5 † for OVER RANGE † First D5 of AUTO ZERO and deintegrate is ...

  • Page 7

    DESCRIPTION OF ANALOG CIRCUITS Input Signal Range The common mode range of the input amplifier extends from 1 V above the negative supply below the positive supply. Within this range, the common-mode rejection ratio (CMRR) is typically ...

  • Page 8

    ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003 BUSY Output The BUSY output goes high at the beginning of the signal integrate phase. BUSY remains high until the first clock ...

  • Page 9

    Integrating Capacitor The product of the integrating resistor and capacitor should be selected to give the maximum voltage swing without causing the integrating amplifier output to saturate and get too close to the power supply voltages. When the amplifier output ...

  • Page 10

    ICL7135C, TLC7135C 4 1/2 DIGIT PRECISION ANALOG TO DIGITAL CONVERTERS SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003 Minimum Clock Frequency The minimum clock frequency limitations result from capacitor leakage from the auto-zero and reference capacitors. Measurement cycles as high ...

  • Page 11

    ... ACTIVE ICL7135CNG4 ACTIVE TLC7135CDW ACTIVE TLC7135CDWG4 ACTIVE TLC7135CDWR ACTIVE TLC7135CDWRG4 ACTIVE TLC7135CN ACTIVE TLC7135CNG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. ...

  • Page 12

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TLC7135CDWR SOIC DW PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 28 1000 330.0 32.4 11.35 Pack Materials-Page 1 11-Mar-2008 B0 (mm) K0 (mm Pin1 (mm) (mm) Quadrant 18.67 3 ...

  • Page 13

    ... Device Package Type TLC7135CDWR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 1000 Pack Materials-Page 2 11-Mar-2008 Width (mm) Height (mm) 346.0 346.0 49.0 ...

  • Page 14

    ...

  • Page 15

    N (R-PDIP-T**) 24 PIN SHOWN 0.060 (1,52) TYP 0.021 (0,53) 0.010 (0,25) 0.015 (0,38) PINS ** DIM A MAX A MIN NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change ...

  • Page 16

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...