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PDF MAX5302 Data sheet ( Hoja de datos )
| Número de pieza | MAX5302 | |
| Descripción | Low-Power / 12-Bit Voltage-Output DAC with Serial Interface | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX5302 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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19-1559; Rev 0; 10/99
Low-Power, 12-Bit Voltage-Output DAC
with Serial Interface
__________________General Description
The MAX5302 combines a low-power, voltage-output,
12-bit digital-to-analog converter (DAC) and a precision
output amplifier in an 8-pin µMAX package. It operates
from a single +5V supply, drawing less than 280µA of
supply current.
The output amplifier’s inverting input is available to the
user, allowing specific gain configurations, remote sens-
ing, and high output current capability. This makes the
MAX5302 ideal for a wide range of applications, includ-
ing industrial process control. Other features include a
software shutdown and power-on reset.
The serial interface is SPI™/QSPI™/MICROWIRE™ com-
patible. The DAC has a double-buffered input, organized
as an input register followed by a DAC register. A 16-bit
serial word loads data into the input register. The DAC
register can be updated independently or simultaneously
with the input register. All logic inputs are TTL/CMOS-
logic compatible and buffered with Schmitt triggers to
allow direct interfacing to optocouplers.
Applications
Industrial Process Control
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Control
Microprocessor-Controlled Systems
Functional Diagram
Features
o 12-Bit DAC with Configurable Output Amplifier
o +5V Single-Supply Operation
o Low Supply Current: 0.28mA Normal Operation
2µA Shutdown Mode
o Available in 8-Pin µMAX
o Power-On Reset Clears DAC Output to Zero
o SPI/QSPI/MICROWIRE Compatible
o Schmitt-Trigger Digital Inputs for Direct
Optocoupler Interface
PART
MAX5302CUA
MAX5302EUA
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 µMAX
Pin Configuration
GND VDD
REF
CONTROL
DAC
REGISTER
INPUT
REGISTER
CS
DIN
SCLK
16-BIT
SHIFT
REGISTER
DAC
MAX5302
FB
OUT
TOP VIEW
OUT 1
CS 2
DIN 3
SCLK 4
MAX5302
8 VDD
7 GND
6 REF
5 FB
µMAX
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1 page  
Low-Power, 12-Bit Voltage-Output DAC
with Serial Interface
Typical Operating Characteristics (continued)
(VDD = +5V, RL = 5kΩ, CL = 100pF, TA = +25°C, unless otherwise noted.)
MAJOR-CARRY TRANSITION
CS
5V/div
DIGITAL FEEDTHROUGH (fSCLK = 100kHz)
SCLK
2V/div
OUT
AC-COUPLED
100mV/div
10µs/div
OUT
AC-COUPLED
10mV/div
CODE = 2048
CS = 5V
2µs/div
OUT
1V/div
DYNAMIC RESPONSE
GND
10µs/div
GAIN = 2, SWITCHING FROM CODE 0 TO 4020
_______________________________________________________________________________________ 5
5 Page 
Low-Power, 12-Bit Voltage-Output DAC
with Serial Interface
+5V
AC 26k
REFERENCE
INPUT
+5V
500mVp-p
10k
MAX495
REF VDD
DAC OUT
MAX5302
GND
+5V REF
VDD
DAC
MAX5302
VL
IOUT
OUT 2N3904
FB
GND
R
Figure 11. AC Reference Input Circuit
Figure 12. Digitally Programmable Current Source
Chip Information
TRANSISTOR COUNT: 3053
SUBSTRATE CONNECTED TO AGND
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX5302.PDF ] | |
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