Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) QSOP 16

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General Description

The MAX5130/MAX5131 are low-power, 13-bit, voltage-

output digital-to-analog converters (DACs) with an inter-

nal precision bandgap reference and output amplifier.

The MAX5130 operates on a single +5V supply with an

internal reference of +2.5V, and is capable of a +4.0955V

full-scale output. If necessary, the user can override the

on-chip, <10ppm/°C voltage reference with an external

reference. The MAX5131, operating on +3V, delivers its

+2.04775V full-scale output with an internal precision ref-

erence of +1.25V. Both devices draw only 500µA of sup-

ply current, which reduces to 3µA in power-down mode.

In addition, their power-up reset feature allows for a user-

selectable initial output state of either 0V or midscale and

minimizes output voltage glitches during power-up.

The serial interface is compatible with SPI™, QSPI™, and

MICROWIRE™, which makes the MAX5130/MAX5131

suitable for cascading multiple devices. Each DAC has a

double-buffered input organized as an input register fol-

lowed by a DAC register. A 16-bit shift register loads data

into the input register. The DAC register may be updated

independently or simultaneously with the input register.

Both devices are available in a 16-pin QSOP package

and are specified for the extended-industrial (-40°C to

+85°C) temperature range. For pin-compatible 14-bit

upgrades, see the MAX5170/MAX5172 data sheet;

for pin-compatible 12-bit versions, see the MAX5120/

MAX5121 data sheet.

Applications

Industrial Process Control

Automatic Test Equipment (ATE)

Digital Offset and Gain Adjustment

Motion Control

µP-Controlled Systems

Features

♦ Single-Supply Operation

+5V (MAX5130)

+3V (MAX5131)

♦ Full-Scale Output Range

+4.0955V (MAX5130)

+2.04775V (MAX5131)

♦ Built-In 10ppm/°C (max) Precision Bandgap

Reference

+2.5V (MAX5130)

+1.25V (MAX5131)

♦ Adjustable Output Offset

♦ SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial

Interface

♦ Pin-Programmable Shutdown Mode and Power-

Up Reset (0V or Midscale Output Voltage)

♦ Buffered Output Capable of Driving 5kΩ || 100pF

or 4–20mA Loads

♦ Space-Saving 16-Pin QSOP Package

♦ Pin-Compatible Upgrades to the 12-Bit

MAX5120/MAX5121

♦ Pin-Compatible 14-Bit Upgrades Available

(MAX5170/MAX5172)

MAX5130/MAX5131

+3V/+5V, 13-Bit, Serial Voltage-Output DACs

with Internal Reference

________________________________________________________________

Maxim Integrated Products

OS V

REFADJ

REF

AGND

UPO

DOUT

DGND

TOP VIEW

MAX5130

MAX5131

QSOP

OUT

RSTVAL

PDL

CLR

DIN

SCLK

19-1429; Rev 0; 2/99

Pin Configuration

Ordering Information

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART

MAX5130AEEE

MAX5130BEEE

INL

(LSB)

±0.5

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

16 QSOP

16 QSOP ±1

MAX5131AEEE

MAX5131BEEE

±1

-40°C to +85°C

-40°C to +85°C 16 QSOP

16 QSOP ±2

Summary of content (20 pages)

PAGE 1
9-1429; Rev 0; 2/99 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference The MAX5130/MAX5131 are low-power, 13-bit, voltageoutput digital-to-analog converters (DACs) with an internal precision bandgap reference and output amplifier. The MAX5130 operates on a single +5V supply with an internal reference of +2.5V, and is capable of a +4.0955V full-scale output. If necessary, the user can override the on-chip, <10ppm/°C voltage reference with an external reference.
PAGE 2
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference ABSOLUTE MAXIMUM RATINGS VDD to AGND, DGND ...............................................-0.3V to +6V AGND to DGND.....................................................-0.3V to +0.3V Digital Inputs to DGND.............................................-0.3V to +6V Digital Outputs (DOUT, UPO) to DGND .....-0.3V to (VDD + 0.3V) OUT to AGND.............................................-0.3V to (VDD + 0.3V) OS to AGND ............
PAGE 3
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference (VDD = +5V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DYNAMIC PERFORMANCE Voltage Output Slew Rate SR Output Settling Time To ±0.
PAGE 4
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX5131 (+3V) (continued) (VDD = +3V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL Input Leakage Current IIN Input Capacitance CIN CONDITIONS VIN = 0 or VDD MIN TYP MAX UNITS -1 0.
PAGE 5
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference (VDD = +3V ±10%, OS = AGND = DGND = 0V, 33nF capacitor at REFADJ, internal reference, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 6
Typical Operating Characteristics (continued) (VDD = +5V (MAX5130), VDD = +3V (MAX5131), RL = 5kΩ, CL = 100pF, OS = AGND, TA = +25°C, unless otherwise noted.) MAX5130 SUPPLY CURRENT vs. SUPPLY VOLTAGE 400 (CODE = 1555 HEX) 350 (CODE = 0000 HEX) 300 (CODE = 1555 HEX) 400 350 (CODE = 0000 HEX) 300 250 3.5 -60 -40 -20 0 20 40 60 80 100 4.5 5.0 5.5 6.0 MAX5130 FULL-SCALE OUTPUT vs. TEMPERATURE MAX5130 FULL-SCALE ERROR vs. RESISTIVE LOAD 4.097 4.096 4.095 4.094 2.
PAGE 7
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference MAX5131 DIFFERENTIAL NONLINEARITY vs. DIGITAL INPUT CODE 0.15 DNL (LSB) 0 0.05 -0.05 -0.1 -0.15 -0.2 0 2000 4000 6000 8000 4000 6000 8000 10,000 -60 -40 -20 0 20 40 60 80 100 DIGITAL INPUT CODE TEMPERATURE (°C) MAX5131 SUPPLY CURRENT vs. TEMPERATURE MAX5131 SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX5131 SHUTDOWN CURRENT vs.
PAGE 8
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference Typical Operating Characteristics (continued) (VDD = +5V (MAX5130), VDD = +3V (MAX5131), RL = 5kΩ, CL = 100pF, OS = AGND, TA = +25°C, unless otherwise noted.
PAGE 9
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference PDL PD DIN SCLK MAX5130/MAX5131 CS VDD AGND DGND SR CONTROL 16-BIT SHIFT REGISTER DOUT LOGIC OUTPUT UPO OS R RSTVAL DECODE CONTROL CLR 13 MAX5130 MAX5131 0.6384R INPUT REGISTER DAC REGISTER OUT DAC GAIN = 1.6384X BANDGAP 1.25V REFERENCE ( ) FOR MAX5131 ONLY 2X (1X) 4k 2.5V, (1.25V) REFERENCE BUFFER REFADJ REF Figure 1.
PAGE 10
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference reference voltage. Use the circuits shown in Figure 3a (MAX5130) and Figure 3b (MAX5131) to achieve these adjustments. Connect a 33nF capacitor from REFADJ to AGND to establish low-noise operation of the DAC. Larger capacitor values may be used, but will result in increased start-up delay.
PAGE 11
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference MAX5130/MAX5131 Table 1. Serial-Interface Programming Commands 16-BIT SERIAL WORD FUNCTION C2 C1 C0 D12 ............... D0 0 0 0 XXXXXXXXXXXXX No operation. 0 0 1 13-Bit DAC Data Load input register; DAC register unchanged. 0 1 0 13-Bit DAC Data Simultaneously load input and DAC registers; exit shutdown. 0 1 1 XXXXXXXXXXXXX Update DAC register from input register; exit shutdown.
PAGE 12
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference PIC16 with SSP Module and PIC17 Interface The 16-bit input word may be sent in two 1-byte packets (SPI-, MICROWIRE- and PIC16/PIC17-compatible), with CS low during this period. The control bits C2, C1, and C0 (Table 1) determine: • The clock edge on which DOUT is to be clocked out via the serial interface, • The state of the user-programmable logic output, • The configuration of the device after shutdown.
PAGE 13
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference CONTROL BIT MAX5130/MAX5131 SETTING SYNCHRONOUS SERIAL-PORT CONTROL REGISTER (SSPCON) WCOL BIT7 X Write Collision Detection Bit SSPOV BIT6 X Receive Overflow Detection Bit SSPEN BIT5 1 Synchronous Serial Port Enable Bit 0: Disables serial port and configures these pins as I/O port pins. 1: Enables serial port and configures SCK, SDO and SCI as serial-port pins. Clock Polarity Select Bit. CKP = 0 for SPI master-mode selection.
PAGE 14
__________Applications Information Definitions Integral Nonlinearity (INL) Integral nonlinearity (Figure 8a) is the deviation of the values on an actual transfer function from a straight line. This straight line can be either a best-straight-line fit (closest approximation to the actual transfer curve) or a line drawn between the endpoints of the transfer function, once offset and gain errors have been nullified. For a DAC, the deviations are measured at every single step.
PAGE 15
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference VDD Digital Feedthrough Digital feedthrough is noise generated on the DAC’s output when any digital input transitions. Proper board layout and grounding will significantly reduce this noise, but there will always be some feedthrough caused by the DAC itself. R MAX5130 MAX5131 0.6384R DAC OUT AGND Unipolar Output Figure 9 shows the MAX5130/MAX5131 setup for unipolar, Rail-to-Rail ® operation with a gain of 1.6384V/V. With its +2.
PAGE 16
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference Table 5. Unipolar Code Table (Gain = +1.6384V/V) ANALOG OUTPUT DAC CONTENTS MSB INTERNAL REFERENCE LSB EXTERNAL REFERENCE MAX5130 MAX5131 1 1111 1111 1111 +4.0955V +2.04775V +VREF (8191 / 8192) · 1.6384 1 0000 0000 0001 +2.0485V +1.02425V +VREF (4097 / 8192) · 1.6384 1 0000 0000 0000 +2.0480V +1.02400V +VREF (4096 / 8192) · 1.6384 0 1111 1111 1111 +2.0475V +1.02375V +VREF (4095 / 8192) · 1.
PAGE 17
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference = VDD). Bypass the power supply with a 4.7µF capacitor in parallel with a 0.1µF capacitor to AGND. Minimize lead lengths to reduce lead inductance. The MAX5130/MAX5131 have multiplying capabilities within the reference input voltage range specifications. Figure 14 shows a technique for applying a sinusoidal input to REF, where the AC signal is offset before being applied to the reference input.
PAGE 18
___________________Chip Information TRANSISTOR COUNT: 3308 SUBSTRATE CONNECTED TO AGND Package Information QSOP.
PAGE 19
+3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference ______________________________________________________________________________________ MAX5130/MAX5131 NOTES 19
PAGE 20
MAX5130/MAX5131 +3V/+5V, 13-Bit, Serial Voltage-Output DACs with Internal Reference NOTES Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.