MAX5250BEAP+ Maxim Integrated Products, MAX5250BEAP+ Datasheet

IC DAC 10BIT QUAD 5V LP 20-SSOP

MAX5250BEAP+

Manufacturer Part Number
MAX5250BEAP+
Description
IC DAC 10BIT QUAD 5V LP 20-SSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX5250BEAP+

Settling Time
10µs
Number Of Bits
10
Data Interface
Serial
Number Of Converters
4
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SSOP
Number Of Dac Outputs
4
Resolution
10 bit
Interface Type
Serial (SPI)
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Maximum Power Dissipation
640 mW
Minimum Operating Temperature
- 40 C
Supply Current
850 uA
Voltage Reference
External
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power Dissipation (max)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The +5V MAX5250 combines four low-power, voltage-
output, 10-bit digital-to-analog converters (DACs) and
four precision output amplifiers in a space-saving, 20-
pin package. 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
MAX5250 ideal for industrial-process-control applica-
tions. Other features include software shutdown, hard-
ware shutdown lockout, an active-low reset that 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
3-wire serial interface is compatible with SPI™/QSPI™
and MICROWIRE™. It allows the input and DAC regis-
ters to be updated independently or simultaneously with
a single software command. All logic inputs are
TTL/CMOS-logic compatible.
__________________General Description
________________________Applications
19-1171; Rev 1; 10/02
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.
_________________________________________________________________________Functional Diagram
Low-Power, Quad, 10-Bit Voltage-Output DAC
Digital Offset and Gain Adjustment
Microprocessor-Controlled Systems
Industrial Process Controls
Automatic Test Equipment
Remote Industrial Controls
Motion Control
________________________________________________________________ Maxim Integrated Products
DOUT
CS DIN SCLK
REGISTER
CONTROL
16-BIT
SHIFT
SR
CL
OUTPUT
CONTROL
DECODE
LOGIC
UPO
PDL
DGND
REGISTER A
REGISTER B
REGISTER C
REGISTER D
INPUT
INPUT
INPUT
INPUT
AGND
V
DD
REGISTER B
REGISTER C
REGISTER D
REGISTER A
DAC
DAC
DAC
DAC
______________________________Features
o Four 10-Bit DACs with Configurable
o +5V Single-Supply Operation
o Low Supply Current: 0.85mA Normal Operation
o Available in 20-Pin SSOP and DIP Packages
o Power-On Reset Clears all Registers and
o SPI/QSPI and MICROWIRE Compatible
o Simultaneous or Independent Control of DACs
o User-Programmable Digital Output
o Schmitt-Trigger Inputs for Direct Optocoupler
o 12-Bit Upgrade Available: MAX525
Ordering Information continued on last page.
Pin Configuration appears at end of data sheet.
_________________Ordering Information
MAX5250ACPP
MAX5250BCPP
MAX5250ACAP
MAX5250BCAP
MAX5250
Output Amplifiers
DACs to Zero
through 3-Wire Serial Interface
Interface
with Serial Interface
PART
DAC C
DAC A
DAC B
DAC D
REFCD
REFAB
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
10µA Shutdown Mode
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
PIN-PACKAGE
FBA
OUTA
FBB
OUTB
FBC
OUTC
FBD
OUTD
±1/2
±1
±1/2
±1
(LSB)
INL
1

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MAX5250BEAP+ Summary of contents

Page 1

... OUTPUT CS DIN SCLK UPO 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 ...

Page 2

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface ABSOLUTE MAXIMUM RATINGS V to AGND............................................................-0. DGND ...........................................................-0.3V to +6V DD AGND to DGND ..................................................................±0.3V REFAB, REFCD to AGND ...........................-0. OUT_, FB_ to AGND...................................-0.3V to ...

Page 3

Low-Power, Quad, 10-Bit Voltage-Output DAC ELECTRICAL CHARACTERISTICS (continued +5V ±10%, AGND = DGND = 0V, REFAB = REFCD = 2.5V noted. Typical values are +25°C. Output buffer connected in unity-gain configuration (Figure 9).) ...

Page 4

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface ELECTRICAL CHARACTERISTICS (continued +5V ±10%, AGND = DGND = 0V, REFAB = REFCD = 2.5V noted. Typical values are +25°C. Output buffer connected in unity-gain ...

Page 5

Low-Power, Quad, 10-Bit Voltage-Output DAC ____________________________Typical Operating Characteristics (continued +5V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 1000 950 900 850 800 750 700 650 CODE = FFC HEX 600 4.0 4.2 ...

Page 6

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface ____________________________Typical Operating Characteristics (continued +5V 2.5V 5kΩ 100pF, T REF MAJOR-CARRY TRANSITION 10µs/div ANALOG CROSSTALK GND 10µs/div DAC A CODE SWITCHING ...

Page 7

Low-Power, Quad, 10-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

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface REF_ AGND SHOWN FOR ALL 1s ON DAC Figure 1. Simplified DAC Circuit Diagram _______________Detailed Description The MAX5250 contains four 10-bit, voltage-output ...

Page 9

Low-Power, Quad, 10-Bit Voltage-Output DAC In power-down mode, the MAX5250 output amplifiers and the reference inputs enter a high-impedance state. The serial interface remains active. Data in the input registers is retained in power-down, allowing the MAX5250 to recall the ...

Page 10

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface Table 1. Serial-Interface Programming Commands 16-BIT SERIAL WORD D9................. MSB.............LSB 10-bit DAC data 10-bit DAC data ...

Page 11

Low-Power, Quad, 10-Bit Voltage-Output DAC CS SCLK 1 A0 DIN A1 C1 DOUT (MODE 0) MSB FROM PREVIOUS WRITE DOUT (MODE 1) MSB FROM PREVIOUS WRITE Figure 5. Serial-Interface Timing Diagram CS t CSS ...

Page 12

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface MAX5250 SCLK SCLK DIN DOUT DIN CS CS Figure 7. Daisy-Chaining MAX5250s DIN SCLK CS1 CS2 CS3 CS MAX5250 SCLK DIN Figure 8. Multiple MAX5250s Sharing a Common DIN Line 12 ______________________________________________________________________________________ ...

Page 13

Low-Power, Quad, 10-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 MAX5250 unipolar output circuit, which is also the typi- cal operating circuit. Table ...

Page 14

Low-Power, Quad, 10-Bit Voltage-Output DAC with Serial Interface +5V REFERENCE INPUTS MAX5250 V REFAB REFCD DD DAC A DAC B DAC C DAC D AGND DGND 2.5V REFAB REFCD Figure 10. Unipolar Rail-to-Rail Output Circuit R1 ...

Page 15

Low-Power, Quad, 10-Bit Voltage-Output DAC REF_ MAX5250 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

... 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. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2002 Maxim Integrated Products ...

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