Datasheet

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TLC0834C, TLC0834I, TLC0838C, TLC0838I

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

SLAS094E – MARCH 1995 – REVISED OCTOBER 2000

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

8-Bit Resolution

Easy Microprocessor Interface or

Stand-Alone Operation

Operates Ratiometrically or With 5-V

Reference

4- or 8-Channel Multiplexer Options With

Address Logic

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

Remote Operation With Serial Data Link

Inputs and Outputs Are Compatible With

TTL and MOS

Conversion Time of 32 µs at

clock

= 250 kHz

Functionally Equivalent to the ADC0834

and ADC0838 Without the Internal Zener

Regulator Network

Total Unadjusted Error . . . ±1 LSB

description

These devices are 8-bit successive- approximation analog-to-digital converters, each with an

input-configurable multichannel multiplexer and serial input/output. The serial input/ output is configured to

interface with standard shift registers or microprocessors. Detailed information on interfacing with most popular

microprocessors is readily available from the factory.

The TLC0834 (4-channel) and TLC0838 (8-channel) multiplexer is software-configured for single-ended or

differential inputs as well as pseudodifferential input assignments. 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 of any smaller analog voltage span to the full 8 bits of resolution.

The TLC0834C and TLC0838C are characterized for operation from 0°C to 70°C. The TLC0834I and TLC0838I

are characterized for operation from –40°C to 85°C. The TLC0834Q is characterized for operation from –40°C

to 125°C.

CH0

CH1

CH2

CH3

DGTL GND

CLK

SARS

REF

ANLG GND

TLC0834 ...D OR N PACKAGE

(TOP VIEW)

CH0

CH1

CH2

CH3

DGTL GND

SARS

REF

ANLG GND

TLC0834 ...PW PACKAGE

(TOP VIEW)

NC – No internal connection

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

COM

DGTL GND

CLK

SARS

REF

ANLG GND

TLC0838 ...PW, DW, OR N PACKAGE

(TOP VIEW)

AVAILABLE OPTIONS

PACKAGE

SMALL

OUTLINE

(D)

SMALL

OUTLINE

(DW)

PLASTIC DIP

(N)

TSSOP

(PW)

0°C to 70°C TLC0834CD TLC0838CDW TLC0834CN TLC0838CN TLC0834CPW TLC0838CPW

–40°C to 85°C TLC0834ID TLC0838IDW TLC0834IN TLC0838IN TLC0834IPW TLC0838IPW

–40°C to 125°C — — TLC0834QN — —

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.

Summary of content (19 pages)

PAGE 1
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 D D D D D D D 8-Bit Resolution Easy Microprocessor Interface or Stand-Alone Operation Operates Ratiometrically or With 5-V Reference 4- or 8-Channel Multiplexer Options With Address Logic Input Range 0 to 5 V With Single 5-V Supply Remote Operation With Serial Data Link D D D Inputs and Outputs Are Compatible With TTL and MOS Conversion Time of 32 µs at fclock = 250
PAGE 2
CS DI (see Note A) Start Flip-Flop 16 18 CS 18 CLK 17 15 R D SARS S 5-Bit Shift Register R CLK SELECT0 SELECT1 TLC0838 Only SE POST OFFICE BOX 655303 TLC0834 TLC0838 • DALLAS, TEXAS 75265 CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 COM 1 2 3 4 5 6 7 8 9 ODD\ EVEN SGL\ DIF START To Internal Circuits CLK Analog MUX S Time Delay 18 EN CS Comparator REF R Ladder and Decoder SAR Logic and Latch 12 Bits 0–7 One Shot CS 18 CS 18 EN R CLK Bits 0–7 Bit 1 MSB First NOTES A: For the TLC0834
PAGE 3
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 functional description The TLC0834 and TLC0838 use a sample-data-comparator structure that converts differential analog inputs by a successive-approximation routine. Operation of both devices is similar with the exception of SE, an analog common input, and multiplexer addressing.
PAGE 4
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 sequence of operation TLC0834 1 2 3 4 5 6 10 7 11 12 13 14 15 18 19 20 21 CLK tc CS tsu Start Bit +Sign SELECT Bit Bit 1 SGL ODD Don’t Care DI DIF EVEN 1 Hi-Z SARS Mux Settling Time MSB-First Data DO Hi-Z LSB-First Data Hi-Z MSB 7 LSB 6 2 1 0 MSB 1 2 6 TLC0834 MUX-ADDRESS CONTROL LOGIC TABLE MUX ADDRESS CHANNEL NUMBER CH0 CH1 CH2 CH3
PAGE 5
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 sequence of operation TLC0838 1 2 3 4 5 6 7 11 8 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 CLK tc tsu CS Mux Addressing tsu + Sign SEL Start Bit Bit Bit SGL ODD 1 SEL Bit 0 Don’t Care DI DIF EVEN 1 0 Hi-Z Hi-Z SARS SE LSB-First Data MSB-First Data Hi-Z Hi-Z 7 MSB LSB MSB DO 6 2 1 0 1 2 3 4 5 6 7 SE Used to Cont
PAGE 6
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 TLC0838 MUX-ADDRESS CONTROL LOGIC TABLE SELECTED CHANNEL NUMBER MUX ADDRESS SELECT 0 SGL/DIF ODD/EVEN 1 0 CH0 CH1 L L L L + – L L L H L L H L L L H H L H L L L H L H L H H L L H H H H L L L H L L H H L H L H L H H H H L L H H L H H H H L H H H H – 1 CH2 CH3 + – 2 CH4 CH5 + – 3 CH6 CH7
PAGE 7
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 recommended operating conditions Supply voltage, VCC High-level input voltage, VIH MIN NOM MAX 4.5 5 5.5 2 Clock duty cycle (see Note 2) V V Low-level input voltage, VIL Clock frequency, f(clock) UNIT 0.
PAGE 8
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 electrical characteristics over recommended range of operating free-air temperature, VCC = 5 V, f(clock) = 250 kHz (unless otherwise noted) (continued) analog and converter section PARAMETER VIC Common-mode input voltage g On channel II(stdby) I( tdb ) Off channel Standby input current (see Note 4) On channel Off channel TEST CONDITIONS† MIN See Note 3 – 0.
PAGE 9
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 PARAMETER MEASUREMENT INFORMATION VCC CLK 50% 50% GND tsu tsu VCC CS 0.4 V GND th th VCC 2V 2V DI 0.4 V 0.4 V GND Figure 1. Data-Input Timing VCC CLK 50% 50% GND tpd tpd VCC DO 50% 50% GND tsu VCC 50% SE GND Figure 2.
PAGE 10
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 PARAMETER MEASUREMENT INFORMATION VCC Test Point S1 RL From Output Under Test CL (see Note A) S2 LOAD CIRCUIT tr tr VCC CS 50% 90% 10% CS 10% GND S1 Open S2 Closed VCC 90% DO and SARS S1 Closed S2 Open GND VOLTAGE WAVEFORMS –VCC 10% VOLTAGE WAVEFORMS NOTE A: CL includes probe and jig capacitance. Figure 3.
PAGE 11
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 TYPICAL CHARACTERISTICS LINEARITY ERROR vs REFERENCE VOLTAGE UNADJUSTED OFFSET ERROR vs REFERENCE VOLTAGE 1.5 VCC = 5 V f(CLK) = 250 kHz 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 0.75 0.5 0.25 2 0 0 0.01 0.
PAGE 12
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs CLOCK FREQUENCY SUPPLY CURRENT vs FREE-AIR TEMPERATURE 1.5 1.5 VCC = 5 V TA = 25°C I CC – Supply Current – mA I CC – Supply Current – mA f(CLK) = 250 kHz CS = High VCC = 5.5 V VCC = 5 V 1 VCC = 4.5 V 0.5 – 50 1 0.
PAGE 13
TLC0834C, TLC0834I, TLC0838C, TLC0838I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL SLAS094E – MARCH 1995 – REVISED OCTOBER 2000 Differential Nonlinearity – LSB TYPICAL CHARACTERISTICS 1 0.5 0 Vref = 5 V TA = 25°C f(CLK) = 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 f(CLK) = 250 kHz VDD = 5 V 0.5 0 –0.
PAGE 14
PACKAGE OPTION ADDENDUM www.ti.
PAGE 15
PACKAGE OPTION ADDENDUM www.ti.
PAGE 16
PACKAGE OPTION ADDENDUM www.ti.com 24-Jan-2013 PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details.
PAGE 17
PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TLC0834CDR Package Package Pins Type Drawing SOIC SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) D 14 2500 330.0 16.4 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 6.5 9.0 2.1 8.0 16.0 Q1 TLC0834IDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 TLC0838CPWR TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 26-Mar-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLC0834CDR SOIC D 14 2500 367.0 367.0 38.0 TLC0834IDR SOIC D 14 2500 367.0 367.0 38.0 TLC0838CPWR TSSOP PW 20 2000 367.0 367.0 38.0 TLC0838IDWR SOIC DW 20 2000 367.0 367.0 45.0 TLC0838IDWR SOIC DW 20 2000 367.0 367.0 45.0 TLC0838IPWR TSSOP PW 20 2000 367.0 367.0 38.
PAGE 19
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.