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TLV5620C, TLV5620I

QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS

SLAS110B – JANUARY 1995 – REVISED APRIL 1997

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Four 8-Bit Voltage Output DACs

3-V Single-Supply Operation

Serial Interface

High-Impedance Reference Inputs

Programmable for 1 or 2 Times Output

Range

Simultaneous Update Facility

Internal Power-On Reset

Low-Power Consumption

Half-Buffered Output

applications

Programmable Voltage Sources

Digitally Controlled Amplifiers/Attenuators

Mobile Communications

Automatic Test Equipment

Process Monitoring and Control

Signal Synthesis

description

The TLV5620C and TLV5620I are quadruple 8-bit voltage output digital-to-analog converters (DACs) with

buffered reference inputs (high impedance). The DACs produce an output voltage that ranges between either

one or two times the reference voltages and GND; and, the DACs are monotonic. The device is simple to use,

because it runs from a single supply of 3 V to 3.6 V. A power-on reset function is incorporated to ensure

repeatable start-up conditions.

Digital control of the TLV5620C and TLV5620I is over a simple three-wire serial bus that is CMOS compatible

and easily interfaced to all popular microprocessor and microcontroller devices. The 11-bit command word

comprises eight bits of data, two DAC select bits, and a range bit, the latter allowing selection between the times

1 or times 2 output range. The DAC registers are double buffered, allowing a complete set of new values to be

written to the device, then all DAC outputs update simultaneously through control of LDAC. The digital inputs

feature Schmitt triggers for high noise immunity.

The 14-terminal small-outline (SO) package allows digital control of analog functions in space-critical

applications. The TLV5620C is characterized for operation from 0°C to 70°C. The TLV5620I is characterized

for operation from –40°C to 85°C. The TLV5620C and TLV5620I do not require external trimming.

AVAILABLE OPTIONS

PACKAGE

SMALL OUTLINE

(D)

PLASTIC DIP

(N)

0°C to 70°C TLV5620CD TLV5620CN

–40°C to 85°C TLV5620ID TLV5620IN

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.

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.

GND

REFA

REFB

REFC

REFD

DATA

CLK

LDAC

DACA

DACB

DACC

DACD

LOAD

D OR N PACKAGE

(TOP VIEW)

Summary of content (16 pages)

PAGE 1
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 D D D D D D D D D D OR N PACKAGE (TOP VIEW) Four 8-Bit Voltage Output DACs 3-V Single-Supply Operation Serial Interface High-Impedance Reference Inputs Programmable for 1 or 2 Times Output Range Simultaneous Update Facility Internal Power-On Reset Low-Power Consumption Half-Buffered Output GND REFA REFB REFC REFD DATA CLK 1 14 2 13 3 12 4 11 5 10 6 9 7 8 VDD LDAC DACA DACB DACC DAC
PAGE 2
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 functional block diagram REFA 2 + – DAC 8 REFB 3 Latch + – DAC 8 REFC 4 DATA LOAD Latch Latch 8 DAC Latch ×2 + – 12 ×2 + – 11 ×2 + – 10 ×2 + – 9 DACA DACB DACC 5 + – DAC 8 CLK Latch 8 + – 8 REFD Latch 8 Latch Latch 8 DACD 7 6 Serial Interface 8 13 LDAC Power-On Reset Terminal Functions TERMINAL I/O DESCRIPTION 7 I Serial interface clock.
PAGE 3
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 detailed description The TLV5620 is implemented using four resistor-string DACs. The core of each DAC is a single resistor with 256 taps, corresponding to the 256 possible codes listed in Table 1. One end of each resistor string is connected to GND and the other end is fed from the output of the reference input buffer. Monotonicity is maintained by use of the resistor strings.
PAGE 4
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 CLK tsu(DATA-CLK) tsu(LOAD-CLK) tv(DATA-CLK) DATA A1 A0 RNG D7 D6 D5 D4 D3 D2 D1 D0 tsu(CLK-LOAD) tw(LOAD) LOAD DAC Update Figure 1. LOAD-Controlled Update (LDAC = Low) CLK tsu(DATA-CLK) tv(DATA-CLK) DATA A1 A0 RNG D7 D6 D5 D4 D3 D2 D1 D0 tsu(LOAD-LDAC) LOAD tw(LDAC) LDAC DAC Update Figure 2.
PAGE 5
CLK Low CLK DATA ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ A1 A0 ÎÎÎÎ ÎÎÎÎ RNG D7 D6 D5 D4 D3 ÎÎÎÎ ÎÎÎÎ D2 D1 D0 D2 D1 D0 LOAD LDAC Figure 3. Load Controlled Update Using 8-Bit Serial Word (LDAC = Low) CLK DATA ÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎ A1 A0 ÎÎÎ ÎÎÎ RNG D7 D6 D5 D4 D3 ÎÎÎÎÎ ÎÎÎÎÎ LOAD LDAC Figure 4.
PAGE 6
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 linearity, offset, and gain error using single-end supplies When an amplifier is operated from a single supply, the voltage offset can still be either positive or negative. With a positive offset voltage, the output voltage changes on the first code change. With a negative offset the output voltage may not change with the first code depending on the magnitude of the offset voltage.
PAGE 7
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 equivalent inputs and outputs INPUT CIRCUIT OUTPUT CIRCUIT VDD VDD Input from Decoded DAC Register String Vref Input _ + DAC Voltage Output ×1 84 kΩ Output Range × 2 Select To DAC Resistor String ISINK 60 µA Typical 84 kΩ GND GND absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage (VDD – GND) . . . . . . . . . . . . . . . . . . . .
PAGE 8
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 electrical characteristics over recommended operating free-air temperature range, VDD = 3 V to 3.
PAGE 9
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 PARAMETER MEASUREMENT INFORMATION TLV5620 DACA DACB DACC DACD 10 kΩ CL = 100 pF Figure 6. Slew, Settling Time, and Linearity Measurements TYPICAL CHARACTERISTICS NEGATIVE FALL TIME AND SETTLING TIME 3 3 2.5 2.5 2 2 VO – Output Voltage – V VO – Output Voltage – V POSITIVE RISE TIME AND SETTLING TIME 1.5 1 VDD = 3 V TA = 25°C Code 00 to FF Hex Range = ×2 Vref = 1.25 V (see Note A) 0.
PAGE 10
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 TYPICAL CHARACTERISTICS DAC OUTPUT VOLTAGE vs OUTPUT LOAD DAC OUTPUT VOLTAGE vs OUTPUT LOAD 1.6 3 1.4 VO – DAC Output Voltage – V VO – DAC Output Voltage – V 2.8 2.6 2.4 2.2 2 1.8 1.6 VDD = 3 V, Vref = 1.5 V, Range = 2x 1.4 1.2 1 0.8 0.6 0.4 VDD = 3 V, Vref = 1.5 V, Range = 1x 0.2 1.
PAGE 11
TLV5620C, TLV5620I QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS SLAS110B – JANUARY 1995 – REVISED APRIL 1997 APPLICATION INFORMATION _ TLV5620 DACA DACB DACC DACD + VO R NOTE A: Resistor R w 10 kΩ Figure 12.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device TLV5620IDR Package Package Pins Type Drawing SOIC D 14 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 9.0 2.1 8.0 W Pin1 (mm) Quadrant 16.
PAGE 15
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) TLV5620IDR SOIC D 14 2500 367.0 367.0 38.
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