Datasheet

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TLC0831C, TLC0831I

TLC0832C, TLC0832I

8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL

SLAS107B – JANUARY 1995 – REVISED APRIL 1996

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

8-Bit Resolution

Easy Microprocessor Interface or

Standalone Operation

Operates Ratiometrically or With 5-V

Reference

Single Channel or Multiplexed Twin

Channels With Single-Ended or Differential

Input Options

Input Range 0 to 5 V With Single 5-V Supply

Inputs and Outputs Are Compatible With

TTL and MOS

Conversion Time of 32 µs at

clock

= 250 kHz

Designed to Be Interchangeable With

National Semiconductor ADC0831 and

ADC0832

Total Unadjusted Error...±1 LSB

description

These devices are 8-bit successive-approximation analog-to-digital converters. The TLC0831 has single input

channels; the TLC0832 has multiplexed twin input channels. The serial output is configured to interface with

standard shift registers or microprocessors.

The TLC0832 multiplexer is software configured for single-ended or differential inputs. The differential analog

voltage input allows for common-mode rejection or offset of the analog zero input voltage value. In addition, the

voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of

resolution.

The operation of the TLC0831 and TLC0832 devices is very similar to the more complex TLC0834 and TLC0838

devices. Ratiometric conversion can be attained by setting the REF input equal to the maximum analog input

signal value, which gives the highest possible conversion resolution. Typically, REF is set equal to V

(done

internally on the TLC0832).

The TLC0831C and TLC0832C are characterized for operation from 0°C to 70°C. The TLC0831I and TLC0832I

are characterized for operation from –40°C to 85°C.

AVAILABLE OPTIONS

PACKAGE

SMALL OUTLINE

(D)

PLASTIC DIP

(P)

0°C to 70°C TLC0831CD TLC0832CD TLC0831CP TLC0832CP

–40°C to 85°C TLC0831ID TLC0832ID TLC0831IP TLC0832IP

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.

IN+

IN–

GND

CLK

REF

TLC0831 ...D OR P PACKAGE

(TOP VIEW)

CH0

CH1

GND

/REF

CLK

TLC0832 ...D OR P PACKAGE

(TOP VIEW)

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.

Summary of content (20 pages)

PAGE 1
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 D D D D D D D D D 8-Bit Resolution Easy Microprocessor Interface or Standalone Operation Operates Ratiometrically or With 5-V Reference Single Channel or Multiplexed Twin Channels With Single-Ended or Differential Input Options Input Range 0 to 5 V With Single 5-V Supply Inputs and Outputs Are Compatible With TTL and MOS Conversion Time of 32 µs at fclock = 250 kHz Desi
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TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 functional block diagram Start Flip-Flop CLK CS CLK Shift Register ODD/EVEN D DI (TLC0832 only) S R Start CLK To Internal Circuits CLK SGL/DIF CH0/IN+ CH1/IN – Analog MUX S Comparator R Time Delay EN CS CS CS CS CS EN REF (TLC0831 only) Ladder and Decoder Bits 0–7 R EN SAR Logic and Latch CLK Bits 0–7 Bit 1 MSB First 9-Bit Shift Register LSB Firs
PAGE 3
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 functional description The TLC0831 and TLC0832 use a sample-data-comparator structure that converts differential analog inputs by a successive-approximation routine. The input voltage to be converted is applied to an input terminal and is compared to ground (single ended), or to an adjacent input (differential).
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TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 sequence of operation TLC0831 1 2 3 4 5 6 7 8 9 10 CLK tsu tconv CS MSB-First Data MUX Settling Time Hi-Z DO MSB 7 Hi-Z LSB 6 5 4 3 2 1 0 TLC0832 1 2 3 4 5 6 10 11 12 13 14 18 19 20 21 CLK tconv tsu CS +Sign Bit Start ODD SGL Bit DI (TLC0832 only) Don’t Care DIF EVEN MSB-First Data LSB-First Data MUX Settling Time DO Hi-Z MSB 7
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TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 absolute maximum ratings over recommended operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V Input voltage range, VI: Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 electrical characteristics over recommended range of operating free-air temperature, VCC = 5 V, fclock = 250 kHz (unless otherwise noted) digital section TEST CONDITIONS† PARAMETER VCC = 4.75 V, VCC = 4.75 V, IOH = – 360 µA IOH = – 10 µA VCC = 4.75 V, VIH = 5 V IOL = 1.
PAGE 7
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 operating characteristics VCC = Vref = 5 V, fclock = 250 kHz, tr = tf = 20 ns, TA = 25°C (unless otherwise noted) TEST CONDITIONS† PARAMETER Supply-voltage variation error Total unadjusted error (see Note 5) Common-mode error MSB-first data tpd d Propagation delay g y time,, output data after CLK↑ (see Note 6) tdi dis Output disable time, time DO after CS↑ tconv C
PAGE 8
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 PARAMETER MEASUREMENT INFORMATION VCC CLK 50% 50% GND VCC tsu tsu CLK VCC 50% GND CS tpd 0.4 V GND th 2V VOH th DO 50% VOL VCC 2V DI 0.4 V 0.4 V Figure 2. Data-Output Timing GND Figure 1.
PAGE 9
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 TYPICAL CHARACTERISTICS UNADJUSTED OFFSET ERROR vs REFERENCE VOLTAGE LINEARITY ERROR vs REFERENCE VOLTAGE 1.5 VCC = 5 V fclock = 1 MHz TA = 25°C VI+ = VI – = 0 V 14 1.25 12 E L – Linearity Error – LSB EO(unadj) – Unadjusted Offset Error – LSB 16 10 8 6 4 1.0 0.75 0.5 0.25 2 0 0.01 0.1 1.
PAGE 10
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 TYPICAL CHARACTERISTICS TLC0831 TLC0831 SUPPLY CURRENT vs FREE-AIR TEMPERATURE SUPPLY CURRENT vs CLOCK FREQUENCY 1.5 1.5 VCC = 5 V TA = 25°C I CC – Supply Current – mA I CC – Supply Current – mA fclock = 1 MHz CS = High VCC = 5.5 V VCC = 5 V 1 VCC = 4.5 V 0.5 – 50 1 0.
PAGE 11
TLC0831C, TLC0831I TLC0832C, TLC0832I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS107B – JANUARY 1995 – REVISED APRIL 1996 Differential Nonlinearity – LSB TYPICAL CHARACTERISTICS 1 0.5 0 Vref = 5 V TA = 25°C FCLK = 250 kHz VDD = 5 V –0.5 –1 0 32 64 96 128 160 192 224 256 224 256 Output Code Figure 11. Differential Nonlinearity With Output Code Integral Nonlinearity – LSB 1 Vref = 5 V TA = 25°C FCLK = 250 kHz VDD = 5 V 0.5 0 –0.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 24-Jan-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TLC0831CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TLC0831IDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TLC0832CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TLC0832IDR SOIC D 8 2500 330.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLC0831CDR SOIC D 8 2500 367.0 367.0 35.0 TLC0831IDR SOIC D 8 2500 367.0 367.0 35.0 TLC0832CDR SOIC D 8 2500 367.0 367.0 35.0 TLC0832IDR SOIC D 8 2500 367.0 367.0 35.
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