Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsData collecting ICsData acquisition IC - DA converter (DAC) SOIC 8 N

 2002-2012 Microchip Technology Inc. DS21386C-page 1

TC1320

Features

• 8-bit Digital-to-Analog Converter

• ±2 LSB INL

• ±0.8 LSB DNL

• 2.7-5.5V Single Supply Operation

• Simple SMBus/I

Serial Interface

•Low Power: 350A Operation, 0.5A Shutdown

• 8-Pin SOIC and 8-Pin MSOP Packages

Applications

• Programmable Voltage Sources

• Digital Controlled Amplifiers/Attenuators

• Process Monitoring and Control

Device Selection Table

General Description

The TC1320 is a serially accessible 8-bit voltage output

digital-to-analog converter (DAC). The DAC produces

an output voltage that ranges from ground to an exter-

nally supplied reference voltage. It operates from a sin-

gle power supply that can range from 2.7V to 5.5V,

making it ideal for a wide range of applications. Built

into the part is a Power-on Reset function that ensures

that the device starts at a known condition.

Communication with the TC1320 is accomplished via a

simple 2-wire SMBus/I

C™ compatible serial port with

the TC1320 acting as a slave only device. The host can

enable the SHDN bit in the CONFIG register to activate

the Low Power Standby mode.

Package Type

Typical Application

Part

Number

Package

Temperature

Range

TC1320EOA 8-Pin SOIC (Narrow) -40°C to +85°C

TC1320EUA 8-Pin MSOP -40°C to +85°C

GND

SDA

REF

SCL

OUT

DAC-OUT

TC1320

8-Pin MSOP and

8-Pin SOIC (Narrow)

Microcontroller

Serial Port

SDAT

SCLK

ADJUS

(1)

(8)

(3)

(2)

DAC

REF

(5)

OUT

TC1320

–

(2)

8-Bit Digital-to-Analog Converter with Two-Wire Interface

Summary of content (16 pages)

PAGE 1
TC1320 8-Bit Digital-to-Analog Converter with Two-Wire Interface Features General Description • • • • • • • The TC1320 is a serially accessible 8-bit voltage output digital-to-analog converter (DAC). The DAC produces an output voltage that ranges from ground to an externally supplied reference voltage. It operates from a single power supply that can range from 2.7V to 5.5V, making it ideal for a wide range of applications.
PAGE 2
TC1320 Functional Block Diagram VDD TC1320 Configuration Register SDA SCL Serial Port Interface Data Register Control DAC-OUT VREF DS21386C-page 2 VOUT DAC GND  2002-2012 Microchip Technology Inc.
PAGE 3
TC1320 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* Supply Voltage (VDD) ............................................. +6V Voltage on any Pin .. (GND – 0.3V) to (VDD + 0.3V) Current on any Pin ............................................ ±50mA Package Thermal Resistance (JA)............ 330°C C/W Operating Temperature (TA)........................ See Below Storage Temperature (TSTG) ..............
PAGE 4
TC1320 TC1320 ELECTRICAL SPECIFICATIONS (CONTINUED) Electrical Characteristics: VDD = 2.7V to 5.5V, -40°C  TA  +85°C, VREF = 1.2V unless otherwise noted. Symbol Parameter Min Typ Max Unit Test Conditions Serial Port AC Timing fSMB SMBus Clock Frequency 10 — 100 kHz tIDLE Bus Free Time Prior to New Transition 4.7 — — sec tH(START) START Condition Hold Time 4.0 — — sec tSU(START) START Condition Setup Time 4.
PAGE 5
TC1320 2.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Pin Number Symbol Type 1 VREF Input 2 SDA Bi-Directional Description Input. Voltage Reference Input can range from 0V to 1.2V below VDD. Bi-directional. Serial data is transferred on the SMBus in both directions using this pin. 3 SCL Input 4 GND Power Input. SMBus serial clock. Clocks data into and out of the TC1320. Ground. 5 VOUT Output Output.
PAGE 6
TC1320 3.0 DETAILED DESCRIPTION 3.2 Output Amplifier The TC1320 is a monolithic 8-bit digital-to-analog converter, that is designed to operate from a single supply that can range from 2.7V to 5.5V. The DAC consists of a data register (DATA), a configuration register (CONF), and a current output amplifier. The TC1320 uses an external reference, which also determines the maximum output voltage.
PAGE 7
TC1320 4.0 SERIAL PORT OPERATION 4.1 START Condition (START) The Serial Clock input (SCL) and bi-directional data port (SDA) form a 2-wire bi-directional serial port for programming and interrogating the TC1320. The following conventions are used in this bus architecture: The TC1320 continuously monitors the SDA and SCL lines for a START condition (a HIGH to LOW transition of SDA while SCL is HIGH), and will not respond until this condition is met. TABLE 4-1: 4.
PAGE 8
TC1320 FIGURE 4-1: TIMING DIAGRAMS SMBus Write Timing Diagram A B ILOW IHIGH C D E F G H I K J SCL SDA tSU(START) tH(START) tSU(STOP) tSU-DATA A = START Condition B = MSB of Address Clocked into Slave C = LSB of Address Clocked into Slave D = R/W Bit Clocked into Slave tIDLE I = Acknowledge Clock Pulse E = Slave Pulls SDA Line Low F = Acknowledge Bit Clocked into Master J = STOP Condition K = New START Condition G = MSB of Data Clocked into Master H = LSB of Data Clocked into Master SMBUS
PAGE 9
TC1320 TABLE 4-4: DATA REGISTER (DATA), 8-BIT, READ/WRITE 4.7 The TC1320’s register set is summarized in Table 4-5 below. All registers are 8-bits wide. Data Register (DATA) D[7] D[6] D[5] D[4] D[3] D[2] D[1] MSB X X X X X X Register Set Summary D[0] TABLE 4-5: LSB The DAC output voltage is a function of reference voltage and the binary value of the contents of the Data register.
PAGE 10
TC1320 5.0 PACKAGING INFORMATION 5.1 Package Marking Information Package marking data not available at this time. 5.
PAGE 11
TC1320 5.3 Package Dimensions Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 8-Pin MSOP PIN 1 .122 (3.10) .114 (2.90) .197 (5.00) .189 (4.80) .026 (0.65) TYP. .122 (3.10) .114 (2.90) .043 (1.10) MAX. .016 (0.40) .010 (0.25) .006 (0.15) .002 (0.05) .008 (0.20) .005 (0.13) 6° MAX. .028 (0.70) .016 (0.40) Dimensions: inches (mm)  2002-2012 Microchip Technology Inc.
PAGE 12
TC1320 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging 8-Pin SOIC PIN 1 .157 (3.99) .150 (3.81) .244 (6.20) .228 (5.79) .050 (1.27) TYP. .197 (5.00) .189 (4.80) .069 (1.75) .053 (1.35) .020 (0.51) .010 (0.25) .013 (0.33) .004 (0.10) .010 (0.25) .007 (0.18) 8° MAX.. .050 (1.27) .016 (0.40) Dimensions: inches (mm) DS21386C-page 12  2002-2012 Microchip Technology Inc.
PAGE 13
TC1320 6.0 REVISION HISTORY Revision C (November 2012) Added a note to each package outline drawing.  2002-2012 Microchip Technology Inc.
PAGE 14
TC1320 SALES AND SUPPORT Data Sheets Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recommended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following: 1. 2. Your local Microchip sales office The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
PAGE 15
Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature.
PAGE 16
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