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TLV5626

2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG

CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN

SLAS236A –JUNE 1999 – REVISED JUNE 2000

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

features

Dual 8-Bit Voltage Output DAC

Programmable Internal Reference

Programmable Settling Time:

0.8 µs in Fast Mode ,

2.8 µs in Slow Mode

Compatible With TMS320 and SPI Serial

Ports

Differential Nonlinearity <0.1 LSB Typ

Monotonic Over Temperature

applications

Digital Servo Control Loops

Digital Offset and Gain Adjustment

Industrial Process Control

Machine and Motion Control Devices

Mass Storage Devices

description

The TLV5626 is a dual 8-bit voltage output DAC with a flexible 3-wire serial interface.The serial interface allows

glueless interface to TMS320 and SPI, QSPI, and Microwire serial ports. It is programmed with a 16-bit

serial string containing 2 control and 8 data bits.

The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class AB

output stage to improve stability and reduce settling time. The programmable settling time of the DAC allows

the designer to optimize speed versus power dissipation. With its on-chip programmable precision voltage

reference, the TLV5626 simplifies overall system design.

Because of its ability to source up to 1 mA, the reference can also be used as a system reference. Implemented

with a CMOS process, the device is designed for single supply operation from 2.7 V to 5.5 V. It is available in

an 8-pin SOIC package to reduce board space in standard commercial and industrial temperature ranges.

AVAILABLE OPTIONS

PACKAGE

SOIC

(D)

0°C to 70°C TLV5626CD

–40°C to 85°C TLV5626ID

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.

DIN

SCLK

OUTA

OUTB

REF

AGND

D PACKAGE

(TOP VIEW)

SPI and QSPI are trademarks of Motorola, Inc.

Microwire is a trademark of National Semiconductor Corporation.

Summary of content (19 pages)

PAGE 1
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 features D D D D D D D PACKAGE (TOP VIEW) Dual 8-Bit Voltage Output DAC Programmable Internal Reference Programmable Settling Time: 0.8 µs in Fast Mode , 2.8 µs in Slow Mode Compatible With TMS320 and SPI Serial Ports Differential Nonlinearity <0.
PAGE 2
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 functional block diagram REF AGND VDD PGA With Output Enable Voltage Bandgap Power-On Reset Power and Speed Control 2 2 2-Bit Control Latch x2 OUTA x2 OUTB DIN 8-Bit DAC A Latch 8 SCLK Serial Interface and Control CS 8 8 Buffer 8 8-Bit DAC B Latch 8 Terminal Functions TERMINAL NAME NO.
PAGE 3
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage (VDD to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Reference input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 4
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 electrical characteristics over recommended operating conditions (unless otherwise noted) power supply PARAMETER IDD TEST CONDITIONS No load, All inputs = AGND or VDD, DAC latch = 0x800 Power supply current TYP MAX VDD = 5 V, Int. ref. Fast MIN 4.2 7 mA Slow 2 3.6 mA VDD = 3 V, Int. ref. Fast 3.7 6.3 mA Slow 1.7 3.
PAGE 5
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 electrical characteristics over recommended operating conditions (unless otherwise noted) (Continued) reference pin configured as output (REF) PARAMETER Vref(OUTL) Vref(OUTH) Low reference voltage Iref(source) Iref(sink) Output source current TEST CONDITIONS High reference voltage VDD > 4.75 V MIN TYP MAX UNIT 1.003 1.024 1.045 V 2.027 2.
PAGE 6
TLV5626 2.7-V TO 5.
PAGE 7
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREE-AIR TEMPERATURE SUPPLY CURRENT vs FREE-AIR TEMPERATURE 4.5 4.5 4 Fast Mode I DD – Supply Current – mA I DD – Supply Current – mA 4 3.5 3 2.5 2 Slow Mode 1.5 Fast Mode 3.5 3 2.5 2 Slow Mode 1.5 VDD = 5 V Vref = Int. 2 V Input Code = 1023 (Both DACs) 1 VDD = 3 V Vref = Int.
PAGE 8
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs LOAD CURRENT OUTPUT VOLTAGE vs LOAD CURRENT 3 4.128 VDD = 5 V Vref = Int. 2 V Input Code = 4095 Fast Mode 2.5 VO – Output Voltage – V VO – Output Voltage – V 4.126 VDD = 3 V Vref = Int. 1 V Input Code = 0 4.124 Slow Mode 4.122 4.12 4.118 Fast Mode 2 1.5 1 0.5 4.116 Slow Mode 0 4.114 0 0.5 1 1.
PAGE 9
TLV5626 2.7-V TO 5.
PAGE 10
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 TYPICAL CHARACTERISTICS INL – Integral Nonlinearity – LSB INTEGRAL NONLINEARITY vs DIGITAL OUTPUT CODE 1.0 0.8 0.6 0.4 0.2 –0.0 –0.2 –0.4 –0.6 –0.8 –1.
PAGE 11
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 APPLICATION INFORMATION Notes on SPI and Microwire: Before the controller starts the data transfer, the software has to generate a falling edge on the I/O pin connected to CS. If the word width is 8 bits (SPI and Microwire), two write operations must be performed to program the TLV5626.
PAGE 12
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 APPLICATION INFORMATION data bits: CONTROL D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X X X X X X X X REF1 REF0 X: don’t care REF1 and REF0 determine the reference source and, if internal reference is selected, the reference voltage. reference bits REF1 REF0 REFERENCE 0 0 External 0 1 1.024 V 1 0 2.
PAGE 13
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 APPLICATION INFORMATION examples of operation: (continued) D Set DAC A value, set DAC B value, update both simultaneously, select slow mode, select internal reference at 1.024 V: 1. Set reference voltage to 1.
PAGE 14
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 APPLICATION INFORMATION This offset error, not the linearity error, produces this breakpoint. The transfer function would have followed the dotted line if the output buffer could drive below the ground rail.
PAGE 15
TLV5626 2.7-V TO 5.5-V LOW-POWER DUAL 8-BIT DIGITAL-TO-ANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SLAS236A –JUNE 1999 – REVISED JUNE 2000 MECHANICAL DATA D (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0.050 (1,27) 0.020 (0,51) 0.014 (0,35) 14 0.010 (0,25) M 8 0.008 (0,20) NOM 0.244 (6,20) 0.228 (5,80) 0.157 (4,00) 0.150 (3,81) Gage Plane 0.010 (0,25) 1 7 0°– 8° A 0.044 (1,12) 0.016 (0,40) Seating Plane 0.069 (1,75) MAX 0.010 (0,25) 0.004 (0,10) PINS ** 0.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TLV5626CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TLV5626IDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TLV5626CDR SOIC D 8 2500 346.0 346.0 29.0 TLV5626IDR SOIC D 8 2500 346.0 346.0 29.
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