max5230beeet Maxim Integrated Products, Inc., max5230beeet Datasheet

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max5230beeet

Manufacturer Part Number
max5230beeet
Description
3v/5v, 12-bit, Serial Voltage-output Dual Dacs With Internal Reference
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX5230/MAX5231 low-power, dual 12-bit voltage-
output digital-to-analog converters (DACs) feature an
internal 3ppm/°C precision bandgap voltage reference
and precision output amplifiers. The MAX5231 operates
on a single 5V supply with an internal 2.5V reference and
features a 4.095V full-scale output range. The MAX5230
operates on a single 3V supply with an internal 1.25V ref-
erence and features a 2.0475V full-scale output range.
The MAX5231 consumes only 470µA while the MAX5230
consumes only 420µA of supply current. Both devices
feature low-power (2µA) software- and hardware-
enabled shutdown modes.
The MAX5230/MAX5231 feature a 13.5MHz SPI™-,
QSPI™-, and MICROWIRE™-compatible 3-wire serial
interface. An additional data output (DOUT) allows for
daisy-chaining and read back. Each DAC has a double-
buffered digital input. The MAX5230/MAX5231 feature
two software-selectable shutdown output impedances:
1kΩ or 200kΩ. A power-up reset feature sets DAC out-
puts at ground or at the midscale DAC code.
The MAX5230/MAX5231 are specified over the extended
temperature range (-40°C to +85°C) and are available in
16-pin QSOP packages.
19-2332; Rev 1; 9/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
3V/5V, 12-Bit, Serial Voltage-Output Dual DACs
TOP VIEW
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
µP-Controlled Systems
OUTA
LDAC
SCLK
RSTV
OSA
CLR
DIN
CS
________________________________________________________________ Maxim Integrated Products
1
2
6
3
4
5
7
8
General Description
MAX5230
MAX5231
QSOP
Pin Configuration
Applications
16
15
14
13
12
11
10
9
OSB
OUTB
V
AGND
REF
PDL
DOUT
DGND
DD
with Internal Reference
o Internal 3ppm/°C Precision Bandgap Reference
o 10ppm/°C (max) Full-Scale Output Range
o Single-Supply Operation
o Low Supply Current
o 13.5MHz SPI/QSPI/MICROWIRE-Compatible,
o Pin-Programmable Power-Up Reset State to Zero
o Programmable Shutdown Modes with 1kΩ or
o Recalls Output State Prior to Shutdown or Reset
o Buffered Output Drives 5kΩ || 100pF Loads
o Space-Saving 16-Pin QSOP Package
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
MAX5230AEEE
MAX5230BEEE
MAX5231AEEE
MAX5231BEEE
3-Wire Serial Interface
or Midscale Output Voltage
200kΩ Internal Output Loads
2.465V (MAX5231)
1.234V (MAX5230)
4.095V (MAX5231)
2.0475V (MAX5230)
5V (MAX5231)
3V (MAX5230)
470µA (MAX5231)
420µA (MAX5230)
PART
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
PIN-
PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
Features
(LSB)
±0.5
±0.5
INL
±1
±1
1

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max5230beeet Summary of contents

Page 1

Rev 1; 9/03 3V/5V, 12-Bit, Serial Voltage-Output Dual DACs General Description The MAX5230/MAX5231 low-power, dual 12-bit voltage- output digital-to-analog converters (DACs) feature an internal 3ppm/°C precision bandgap voltage reference and precision output amplifiers. The MAX5231 operates on a single ...

Page 2

Serial Voltage-Output Dual DACs with Internal Reference ABSOLUTE MAXIMUM RATINGS V to AGND, DGND ...............................................-0.3V to +6V DD AGND to DGND.....................................................-0.3V to +0.3V Digital Inputs to DGND.............................................-0.3V to +6V Digital Output (DOUT) to DGND...................-0. OUT_ to ...

Page 3

Serial Voltage-Output Dual DACs ELECTRICAL CHARACTERISTICS—MAX5231 (continued +4.5V to +5.5V, OS_ = AGND = DGND = are +25°C.) A PARAMETER Voltage-Output Settling Time Output-Voltage Swing (Note 5) OS_ Input Resistance ...

Page 4

Serial Voltage-Output Dual DACs with Internal Reference ELECTRICAL CHARACTERISTICS—MAX5230 (continued +2.7V to +3.6V, OS_ = AGND = DGND = are +25°C.) A PARAMETER Reference External Load Regulation Reference Short-Circuit Current ...

Page 5

Serial Voltage-Output Dual DACs ELECTRICAL CHARACTERISTICS—MAX5230 (continued +2.7V to +3.6V, OS_ = AGND = DGND = are +25°C.) A PARAMETER POWER SUPPLIES Power-Supply Voltage Power-Supply Current (Note 7) Power-Supply Current ...

Page 6

Serial Voltage-Output Dual DACs with Internal Reference TIMING CHARACTERISTICS—MAX5230 (V = +2.7V to +3.6V, AGND = DGND = (Figures 1 and 2) PARAMETER SYMBOL SCLK Clock Period SCLK Pulse Width High SCLK Pulse Width Low ...

Page 7

Serial Voltage-Output Dual DACs (V = +3V (MAX5230 +5V (MAX5231 +25°C, unless otherwise noted.) A DIFFERENTIAL NONLINEARITY vs. DIGITAL INPUT CODE (MAX5231) 0.15 0.10 0.05 0 -0.05 -0.10 -0.15 0 500 ...

Page 8

Serial Voltage-Output Dual DACs with Internal Reference (V = +3V (MAX5230 +5V (MAX5231 +25°C, unless otherwise noted.) A TWO-DACs SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE (MAX5231) 255 250 245 240 235 230 ...

Page 9

Serial Voltage-Output Dual DACs (V = +3V (MAX5230 +5V (MAX5231 +25°C, unless otherwise noted.) A DYNAMIC RESPONSE FALL TIME (MAX5231) MAX5230/MAX5231 toc22 V CS 5V/div V OUT 1V/div 2µs/div DIGITAL FEEDTHROUGH ...

Page 10

Serial Voltage-Output Dual DACs with Internal Reference PIN NAME 1 OSA DAC A Offset Adjust 2 OUTA DAC A Output Reset Value Input 3 RSTV 1: Connect Connect to DGND to select zero as the ...

Page 11

Serial Voltage-Output Dual DACs LDAC CS t CSO SCLK DIN DOUT Figure 2. Detailed Serial Interface Timing Detailed Description The MAX5230/MAX5231 12-bit, voltage-output DACs are easily configured with a 3-wire SPI-, QSPI-, MICROWIRE-compatible serial interface. The devices include ...

Page 12

Serial Voltage-Output Dual DACs with Internal Reference Table 1. Serial Data Format MSB <------------16-bits of serial data ------------> LSB 3 Control Bits MSB .. 12 Data Bits ... LSB C2…C0 D11 ..............................D0 The 3-wire serial interface (SPI, QSPI, ...

Page 13

Serial Voltage-Output Dual DACs Power-Down and Shutdown Modes As described in Tables 2 and 3, several serial interface commands put one or both of the DACs into shutdown mode. Shutdown modes are completely independent for each DAC. In ...

Page 14

Serial Voltage-Output Dual DACs with Internal Reference Applications Information Integral Nonlinearity (INL) Integral nonlinearity (Figure 6a) is the deviation of the val- ues on an actual transfer function from a straight line. This straight line can be either ...

Page 15

Serial Voltage-Output Dual DACs Table 4. Unipolar Code Table DAC CONTENTS ANALOG OUTPUT (V) MSB LSB MAX5230 1111 1111 1 111 (0) 2.04750 1000 0000 0 001 (0) 1.02425 1000 0000 0 000 (0) 1.02375 0111 1111 1 ...

Page 16

Serial Voltage-Output Dual DACs with Internal Reference DIN SCLK CS1 CS2 CS3 CS MAX5230 MAX5231 SCLK DIN Figure 9. Multiple MAX5230/MAX5231s Sharing a Common DIN Line SCLK CS CS MAX5230 MAX5231 SCLK DIN DOUT DIN Figure 10. Daisy-Chaining ...

Page 17

Serial Voltage-Output Dual DACs CS DIN SCLK SR PDL CONTROL LDAC RSTV CLR 1 INPUT REGISTERS BANDGAP 1.25V REFERENCE ______________________________________________________________________________________ with Internal Reference DOUT V AGND DD AMP A DAC A 16-BIT SHIFT REGISTER 1kΩ SHUTDOWN DECODE CONTROL ...

Page 18

Serial Voltage-Output Dual DACs with Internal Reference (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any ...

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