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PDF MAX5712 Data sheet ( Hoja de datos )
| Número de pieza | MAX5712 | |
| Descripción | Rail to Rail Voltage-Output Serial DAC | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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MAX5712
Low-Power, 12-Bit, Rail to Rail
Voltage-Output Serial DAC in SOT23
General Description
Features
The MAX5712 is a small footprint, low-power, 12-bit digi-
tal-to-analog converter (DAC) that operates from a single
+2.7V to +5.5V supply. The MAX5712 on-chip precision
output amplifier provides rail-to-rail output swing. Drawing
only 85µA supply current at +3V, the MAX5712 is ideally
suited for portable battery-operated equipment.
The MAX5712 utilizes a 3-wire serial-interface that is com-
patible with SPI/QSPI™/MICROWIRE® and DSP-interface
standards. All logic inputs are CMOS-logic compatible
and buffered with Schmitt triggers to allow direct interfac-
ing to optocouplers. The MAX5712 incorporates a power-
on reset (POR) circuit that ensures the DAC begins in a
zero-volt-state upon power-up. A power-down mode that
reduces current consumption to 0.3µA may be initiated
through a software command.
o Wide -40°C to +125°C Operating Temperature
Range
o Low 85µA Supply Current
o Ultra Low 0.3µA Power-Down Supply Current
o Single +2.7V to +5.5V Supply Voltage
o Fast 20MHz 3-Wire SPI/QSPI/MICROWIRE and
DSP-Compatible Serial Interface
o Schmitt-Triggered Inputs for Direct Interfacing to
Optocouplers
o Rail-to-Rail Output Buffer
o Tiny 6-Pin SOT23 Package
The MAX5712 is available in a small 6-pin SOT23 pack-
age. For dual and quad 12-bit versions, see the MAX5722
and MAX5742 data sheets. For single, dual, and quad
10-bit versions, see the MAX5711, MAX5721 and
MAX5741 data sheets. The MAX5712 is specified over
the automotive temperature range of -40°C to +125°C.
Applications
o Power-On Reset to 0V
o Three Software-Selectable Power-Down Output
Impedances (100kΩ, 1kΩ, Hi-Z)
Ordering Information
Automatic Tuning
Gain and Offset Adjustment
Power Amplifier Control
Process Control I/O Boards
Battery-Powered Equipment
VCO Control
PART
TEMP RANGE
PIN-
PACKAGE
MAX5712EUT+T -40°C to +85°C 6 SOT23
MAX5712AUT+T -40°C to +125°C 6 SOT23
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration appears at end of data sheet.
TOP
MARK
ABCQ
AAUD
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor, Corp.
Functional Diagram
DAC
REGISTER
INPUT
CONTROL
LOGIC
VDD GND
REF+ REF-
12-BIT
DAC
OUTPUT
BUFFER
POWER-DOWN
CONTROL
LOGIC
MAX5712
OUT
100kΩ 1kΩ
CS SCLK DIN
POWER-ON
RESET
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2126; Rev 3; 8/13
1 page  
MAX5712
12-Bit, Low-Power, Rail-to-Rail
Voltage-Output Serial DAC in SOT23
(TA = +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
120
CODE = FFF HEX
100
80
CODE = 000
60
40
20
0
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
Typical Operating Characteristics (continued)
POWER-DOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
300
250
200
150
100
50
0
2.7
3.2 3.7 4.2 4.7
SUPPLY VOLTAGE (V)
5.2
900
800
700
600
500
400
300
200
100
0
0
SUPPLY CURRENT
vs. CS INPUT VOLTAGE
VDD = +5V
VDD = +3V
1234
CS INPUT VOLTAGE (V)
5
FULL-SCALE SETTLING TIME
(VDD = +5V)
MAX5712 toc16
VSCLK
5V/div
FULL-SCALE SETTLING TIME
(VDD = +5V)
MAX5712 toc17
VSCLK
5V/div
HALF-SCALE SETTLING TIME
(VDD = +3V)
MAX5712 toc18
VSCLK
5V/div
VOUT
1V/div
CODE 000 TO FFF HEX
RL = 5kΩ
CL = 200pF
1μs/div
CODE FFF HEX TO 000
RL = 5kΩ
CL = 200pF
2μs/div
VOUT
1V/div
VOUT
1V/div
CODE 400 HEX
TO C00 HEX
RL = 5kΩ
CL = 200pF
1μs/div
HALF-SCALE SETTLING TIME
(VDD = +3V)
MAX5712 toc19
VSCLK
5V/div
EXITING POWER-DOWN
(VDD = +5V)
MAX5712 toc20
VSCLK
5V/div
DIGITAL-TO-ANALOG
GLITCH IMPULSE (VDD = +5V)
MAX5712 toc21
VOUT
1V/div
CODE C00 HEX
TO 400 HEX
RL = 5kΩ
CL = 200pF
1μs/div
Maxim Integrated
CODE 800 HEX
VOUT
5μs/div
1V/div
RL = 5kΩ
CL = 200pF
VOUT
10mV/div
CODE 800 HEX
TO 7FF HEX
RL = 5kΩ
CL = 200pF
500ns/div
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MAX5712.PDF ] | |
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