max5322 Maxim Integrated Products, Inc., max5322 Datasheet

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max5322

Manufacturer Part Number
max5322
Description
Max5322 ?10v, Dual, 12-bit, Serial, Voltage-output Dac
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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Part Number:
max5322EAI+
Manufacturer:
Maxim Integrated Products
Quantity:
135
The MAX5322 dual, 12-bit, serial-interface, digital-to-ana-
log converter (DAC) provides bipolar ±5V to ±10V out-
puts from ±12V to ±15V analog power-supply voltages, or
unipolar 5V to 10V outputs from a single 12V to 15V ana-
log power-supply voltage.
The MAX5322 features excellent linearity with both inte-
gral nonlinearity (INL) and differential nonlinearity (DNL)
guaranteed to ±1 LSB (max). The device also features a
fast 10µs to 0.5 LSB settling time, and a hardware-shut-
down feature that reduces current consumption to 2.8µA.
The output goes to midscale at power-up in bipolar
mode (0V), and to zero scale at power-up in unipolar
mode (0V). A clear input (CLR) asynchronously clears
the DAC register and sets the outputs to 0V. The outputs
can be asynchronously updated with the load DAC
(LDAC) input.
The device features a fast 10MHz SPI™-/QSPI™-
/MICROWIRE™-compatible serial interface that operates
with 3V or 5V logic. Additional features include a serial-
data output (DOUT) for daisy chaining and read-back
functions. The MAX5322 requires external reference volt-
ages of 2V to 5.25V and is available in a 28-pin SSOP
package that operates over the extended (-40°C to
+85°C) temperature range.
19-3150; Rev 2; 10/05
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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.
Motor Control
Industrial Process
Controls
Industrial Automation
±10V, Dual, 12-Bit, Serial, Voltage-Output DAC
________________________________________________________________ Maxim Integrated Products
UNI/BIPB
UNI/BIPA
General Description
DGND
SHDN
DOUT
LDAC
SCLK
REFA
REFB
CLR
DIN
V
CS
CC
Automatic Test
Equipment (ATE)
Analog I/O Boards
Data-Acquisition Systems
16-BIT SHIFT REGISTER
SERIAL INTERFACE
AND CONTROL
REGISTERS
DIGITAL
POWER
INPUT
12
Applications
12
REGISTERS
DAC
12
12
12-BIT
DAC A
12-BIT
DAC B
2R
2R
MAX5322
♦ Unipolar or Bipolar Output-Voltage Ranges
♦ Guaranteed INL ≤ ±1 LSB (max)
♦ Guaranteed Monotonic: DNL ≤ ±1 LSB (max)
♦ 10µs Settling Time to 0.5 LSB
♦ Low 2.8µA Shutdown Current
♦ Fast 10MHz SPI-/QSPI-/MICROWIRE-Compatible
♦ Power-On Reset Sets DAC Output to 0V
♦ Schmitt Trigger Inputs for Direct
♦ Serial-Data Output Allows Daisy-Chaining
♦ 28-Pin SSOP (8mm x 10mm)
SW1
SW4
Serial Interface
Optocoupler Interface
of Devices
MAX5322EAI
Unipolar: 0 to +2 x V
Bipolar: -2 x V
A1
A3
2R
2R
PART
SW3
SW6
SW2
SW5
REF
ANALOG
POWER
A2
A4
to +2 x V
Ordering Information
-40°C to +85°C
TEMP RANGE
Functional Diagram
REF
2R
2R
(Single or Dual Supply)
2R
2R
OUTA
SGNDA
OUTB
SGNDB
V
V
AGND
REF
SS
DD
(Dual Supply)
Features
28 SSOP
PIN-PACKAGE
1

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max5322 Summary of contents

Page 1

... The MAX5322 features excellent linearity with both inte- gral nonlinearity (INL) and differential nonlinearity (DNL) guaranteed to ±1 LSB (max). The device also features a fast 10µ ...

Page 2

Dual, 12-Bit, Serial, Voltage-Output DAC ABSOLUTE MAXIMUM RATINGS V to AGND..........................................................-0.3V to +17V AGND ..........................................................-17V to +0. ..........................................................................+34V DGND ...........................................................-0.3V to +6V CC AGND to DGND.....................................................-0.3V to +0.3V ...

Page 3

Dual, 12-Bit, Serial, Voltage-Output DAC ELECTRICAL CHARACTERISTICS (DUAL SUPPLY) (continued +15V ±5 -15V ±5 unless otherwise noted. Typical values are MIN MAX ...

Page 4

Dual, 12-Bit, Serial, Voltage-Output DAC ELECTRICAL CHARACTERISTICS (SINGLE SUPPLY +15V ±5 0V +5V ±10%, AGND = DGND = SGND_ = 0V unless otherwise ...

Page 5

Dual, 12-Bit, Serial, Voltage-Output DAC ELECTRICAL CHARACTERISTICS (SINGLE SUPPLY) (continued +15V ±5 0V +5V ±10%, AGND = DGND = SGND_ = 0V unless ...

Page 6

Dual, 12-Bit, Serial, Voltage-Output DAC TIMING CHARACTERISTICS (V = +15V -15V or 0V +2.7V to +5.5V, AGND = DGND = SGND_ = unless otherwise ...

Page 7

... B: OUT, 5.0V/div DIFFERENTIAL NONLINEARITY vs. INPUT CODE 0.5 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0 1024 2048 5.0 5.5 INPUT CODE (DECIMAL) BIPOLAR DNL vs. TEMPERATURE 0.5 WORST CASE 0.4 0.3 0.2 0 -40 - TEMPERATURE (°C) BIPOLAR MAJOR CARRY GLITCH ENERGY 250pF LOAD MAX5322 toc08 CS 5V/div V OUT 100mV/div t = 4.00µs/div = +5.0V, REF_ 3072 4096 60 85 MAX5322 toc09 7 ...

Page 8

... V = -15V for bipolar graphs output unloaded +25°C, all graphs apply to both unipolar and bipolar, unless otherwise noted.) A BIPOLAR MAJOR CARRY GLITCH C = 10pF LOAD MAX5322 toc10 CS 5V/div V OUT 100mV/div t = 4.00µs/div UNIPOLAR FULL-SCALE VOLTAGE vs. TEMPERATURE 10.000 CODE = 0XFFFhex 9.999 9 ...

Page 9

Dual, 12-Bit, Serial, Voltage-Output DAC (V = +15V -15V for bipolar graphs output unloaded +25°C, all graphs apply to both unipolar and bipolar, unless otherwise noted.) A UNIPOLAR SUPPLY CURRENT vs. TEMPERATURE ...

Page 10

... INTO REF_ P-P -20 4096 0.01 0 FREQUENCY (kHz) UNIPOLAR STARTUP RESPONSE 230pF LOAD 20V/div V DD 5V/div V CC 5V/div V REF V OUT 1V/div t = 10.0µs/div BIPOLAR STARTUP RESPONSE 230pF LOAD MAX5322 toc29B OUT t = 10.0µs/div = +5.0V, REF_ 100 1000 MAX5322 toc28B ...

Page 11

... BIPOLAR RELEASE FROM HARDWARE SHUTDOWN RESPONSE MAX5322 toc31 V OUT 5V/div V SHDN 2V/div t = 100µs/div DAC-TO-DAC CROSSTALK MAX5322 toc32B OUTB OUTA = +5.0V, REF_ UNIPOLAR SOFTWARE-SHUTDOWN RESPONSE MAX5322 toc32A CS 5V/div V OUT 5V/div t = 40.0µs/div MAX5322 toc33 1mV/div 0V 5V/div 100µs/div 11 ...

Page 12

Dual, 12-Bit, Serial, Voltage-Output DAC PIN NAME 1, 2, 13–16, N.C. No Connection. Not internally connected. 27, 28 DAC B Output-Mode Selection Input. Selects unipolar or bipolar output. Logic high = unipolar, logic 3 UNI/BIPB low = bipolar. In ...

Page 13

... SPI-/QSPI-/MICROWIRE-com- patible serial interface that operates with logic, an asynchronous load input, and a serial-data output. The device offers a CLR that sets the DAC outputs to 0V. Figure 1 shows the functional diagram of the MAX5322. Table 1. Control-Word Format CONTROL BITS MSB ...

Page 14

... LDAC Figure 3. Serial-Interface Timing Diagram 14 ______________________________________________________________________________________ The MAX5322 uses an inverted DAC ladder architec- ture to convert the digital input into an analog output voltage. The digital input controls weighted switches that connect the DAC-ladder nodes to either REFA (REFB) or GND (Figure 4). The sum of the weights pro- duces the analog equivalent of the digital-input word and is then buffered at the output ...

Page 15

... V The first amplifier generates the ±V the second amplifier gains two. When configured for bipolar operation, the MAX5322 must be driven with dual ±12V to ±15V power supplies. With UNI/BIPA (UNI/BIPB) forced high, switches SW1 − ...

Page 16

Dual, 12-Bit, Serial, Voltage-Output DAC (max), DOUT is high impedance, and OUTA and OUTB are pulled to SGNDA and SGNDB, respectively, through the internal feedback resistors of the output amplifier (Figure 1). When coming out of shutdown, or during ...

Page 17

... CC DOUT 9 SCLK 10 DIN N.C. 13 N.C. 14 SSOP ______________________________________________________________________________________ CS MAX5322 SCLK DIN DOUT TRANSISTOR COUNT: 5914 PROCESS: BiCMOS 28 N. OUTB 24 SGNDB 23 AGND 22 REFB REFA 19 SGNDA 18 OUTA 17 UNI/BIPA 16 N. OTHER SERIAL DEVICES MAX5322 SCLK DIN DOUT Chip Information 17 ...

Page 18

... D E 0.205 0.212 5.20 e 0.0256 BSC 0.65 BSC H 0.301 0.311 7.65 L 0.025 0.037 0.63 0∞ 8∞ 0∞ Printed USA is a registered trademark of Maxim Integrated Products, Inc. Package Information Package Information MAX INCHES MILLIMETERS MIN MAX MIN MAX N 1.99 D 0.239 0.249 6.07 6.33 14L 0.21 16L D 0.239 0.249 6 ...

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