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MAX5253A Datasheet

Download or read online Maxim Integrated MAX5253A 3V, Quad, 12-Bit, Voltage-Output DAC with Serial Interface pdf datasheet.



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19-1123; Rev 1; 10/02
+3V, Quad, 12-Bit Voltage-Output DAC
__________________General Description
The MAX5253 combines four low-power, voltage-output,
12-bit digital-to-analog converters (DACs) and four pre-
cision output amplifiers in a space-saving, 20-pin pack-
age. In addition to the four voltage outputs, each
amplifier’s negative input is also available to the user.
This facilitates specific gain configurations, remote
sensing, and high output drive capacity, making the
MAX5253 ideal for industrial-process-control applica-
tions. Other features include software shutdown, hard-
ware shutdown lockout, an active-low reset which clears
all registers and DACs to zero, a user-programmable
logic output, and a serial-data output.
Each DAC has a double-buffered input organized as an
input register followed by a DAC register. A 16-bit serial
word loads data into each input/DAC register. The serial
interface is compatible with SPI™/QSPI™ and
MICROWIRE™. It allows the input and DAC registers to
be updated independently or simultaneously with a sin-
gle software command. The DAC registers can be
simultaneously updated through the 3-wire serial inter-
face. All logic inputs are TTL/CMOS-logic compatible.
________________________Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-Controlled Systems
_________________________________________________________________________Functional Diagram
DOUT
CL
DECODE
CONTROL
16-BIT
SHIFT
REGISTER
SR
LOGIC
CONTROL
OUTPUT
CS DIN SCLK
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
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.
with Serial Interface
______________________________Features
o Four 12-Bit DACs with Configurable
Output Amplifiers
o +3.0V to +3.6V Single-Supply Operation
o Low Supply Current: 0.82mA Normal Operation
o Reference Inputs are High Impedance in Shutdown
o Available in 20-Pin SSOP
o Power-On Reset Clears all Registers and
DACs to Zero
o SPI/QSPI and MICROWIRE Compatible
o Simultaneous or Independent Control of DACs
Through 3-Wire Serial Interface
o User-Programmable Digital Output
_________________Ordering Information
PART
MAX5253ACPP
MAX5253BCPP
MAX5253ACAP
MAX5253BCAP
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
V
AGND
PDL
DGND
DD
MAX5253
INPUT
DAC A
REGISTER A
REGISTER A
INPUT
DAC B
REGISTER B
REGISTER B
INPUT
DAC C
REGISTER C
REGISTER C
INPUT
DAC D
REGISTER D
REGISTER D
UPO
3µA Shutdown Mode
TEMP RANGE
PIN-PACKAGE
0°C to +70°C
20 Plastic DIP
0°C to +70°C
20 Plastic DIP
0°C to +70°C
20 SSOP
0°C to +70°C
20 SSOP
REFAB
FBA
OUTA
DAC A
FBB
OUTB
DAC B
FBC
OUTC
DAC C
FBD
OUTD
DAC D
REFCD
INL
(LSB)
±1/2
±1
±1/2
±1
1

Summary of Contents

Page 1

... Power-On Reset Clears all Registers and DACs to Zero o SPI/QSPI and MICROWIRE Compatible o Simultaneous or Independent Control of DACs Through 3-Wire Serial Interface o User-Programmable Digital Output ___Ordering Information PART MAX5253ACPP MAX5253BCPP MAX5253ACAP MAX5253BCAP Ordering Information continued at end of data sheet. Pin Configuration appears at end of data sheet. V AGND PDL DGND DD MAX5253 ...

Page 2

... MAX5253_E_P ...-40°C to 85°C 0.3V) MAX5253BMJP ...-55°C to 125° 0.3V) Storage Temperature Range ...-65°C to 150°C DD Lead Temperature (soldering, 10s) ...300°C 0.3V 5kΩ 100pF CONDITIONS MAX5253AC/E MAX5253BC/E MAX5253BMJP Guaranteed monotonic (Note 3.0V to 3.6V DD Code-dependent, minimum at code 555 hex unless otherwise A MIN MAX ...

Page 3

Quad, 12-Bit Voltage-Output DAC ELECTRICAL CHARACTERISTICS (continued 3.0V to 3.6V, AGND DGND 0V, REFAB REFCD 1.25V noted. Typical values are 25°C. Output buffer connected in unity-gain configuration (Figure ...

Page 4

Quad, 12-Bit Voltage-Output DAC with Serial Interface TIMING CHARACTERISTICS (V 3.0V to 3.6V, AGND DGND 0V, REFAB REFCD 1.25V noted. Typical values are 25°C. Output buffer connected in unity-gain configuration ...

Page 5

Quad, 12-Bit Voltage-Output DAC ___Typical Operating Characteristics (continued 3.3V 25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 1000 950 900 850 800 750 700 650 600 550 CODE FFF HEX 500 ...

Page 6

Quad, 12-Bit Voltage-Output DAC with Serial Interface ___Typical Operating Characteristics (continued 3.3V 25°C, unless otherwise noted MAJOR-CARRY TRANSITION 10µs/div V 1.25V 5kΩ 100pF REF L L ANALOG CROSSTALK ...

Page 7

Quad, 12-Bit Voltage-Output DAC ___Pin Description PIN NAME 1 AGND Analog Ground 2 FBA DAC A Output Amplifier Feedback 3 OUTA DAC A Output Voltage 4 OUTB DAC B Output Voltage 5 FBB DAC B Output Amplifier Feedback 6 ...

Page 8

Quad, 12-Bit Voltage-Output DAC with Serial Interface D10 REF_ AGND SHOWN FOR ALL 1s ON DAC Figure 1. Simplified DAC Circuit Diagram ___Detailed Description The MAX5253 contains four 12-bit, voltage-output ...

Page 9

Quad, 12-Bit Voltage-Output DAC In shutdown mode, the MAX5253 output amplifiers and the reference inputs enter a high-impedance state. The serial interface remains active. Data in the input regis- ters is retained in shutdown, allowing the MAX5253 to recall ...

Page 10

Quad, 12-Bit Voltage-Output DAC with Serial Interface Table 1. Serial-Interface Programming Commands 16-BIT SERIAL WORD D11... MSB 12-bit DAC data 12-bit DAC data ...

Page 11

Quad, 12-Bit Voltage-Output DAC CS SCLK DIN A1 C0 DOUT (MODE 0) MSB FROM PREVIOUS WRITE DOUT D11 D10 D9 (MODE 1) MSB FROM PREVIOUS WRITE Figure 5. ...

Page 12

Quad, 12-Bit Voltage-Output DAC with Serial Interface MAX5253 SCLK SCLK DIN DIN CS CS Figure 7. Daisy-Chaining MAX5253s DIN SCLK CS1 CS2 CS3 CS MAX5253 SCLK DIN Figure 8. Multiple MAX5253s Sharing a Common DIN Line 12 ___ MAX5253 ...

Page 13

Quad, 12-Bit Voltage-Output DAC ___Applications Information For a unipolar output, the output voltages and the refer- ence inputs have the same polarity. Figure 9 shows the MAX5253 unipolar output circuit, which is also the typi- cal operating circuit. Table ...

Page 14

Quad, 12-Bit Voltage-Output DAC with Serial Interface 3.3V REFERENCE INPUTS MAX5253 REFAB V REFCD DD DAC A DAC B DAC C DAC D AGND DGND 1.25V REFAB REFCD Figure 10. Unipolar Rail-to-Rail Output Circuit R1 ...

Page 15

Quad, 12-Bit Voltage-Output DAC REF_ MAX5253 DAC_ Figure 13. Digitally Programmable Current Source Power-Supply Considerations On power-up, all input and DAC registers are cleared (set to zero code) and DOUT is in Mode 0 (serial data is shifted out ...

Page 16

... Quad, 12-Bit Voltage-Output DAC with Serial Interface _Ordering Information (continued) PART TEMP RANGE PIN-PACKAGE MAX5253BC/D 0°C to 70°C Dice MAX5253AEPP -40°C to 85°C 20 Plastic DIP MAX5253BEPP -40°C to 85°C 20 Plastic DIP MAX5253AEAP -40°C to 85°C 20 SSOP MAX5253BEAP -40°C to 85°C 20 SSOP MAX5253BMJP -55° ...

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