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PDF MAX5304 Data sheet ( Hoja de datos )
| Número de pieza | MAX5304 | |
| Descripción | 10-Bit Voltage-Output DAC in 8-Pin MAX | |
| Fabricantes | Maxim Integrated | |
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Hay una vista previa y un enlace de descarga de MAX5304 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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19-1562; Rev 0; 10/99
10-Bit Voltage-Output DAC
in 8-Pin µMAX
General Description
The MAX5304 combines a low-power, voltage-output,
10-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
sensing, and high output-current capability. This makes
the MAX5304 ideal for a wide range of applications,
including industrial process control. Other features
include a software shutdown and power-on reset.
The serial interface is SPI™/QSPI™/MICROWIRE™
compatible. The DAC has a double-buffered input,
organized as an input register followed by a DAC regis-
ter. A 16-bit serial word loads data into the input regis-
ter. 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 optocou-
plers.
Applications
Digital Offset and Gain Adjustment
Industrial Process Control
Microprocessor-Controlled Systems
Portable Test Instruments
Remote Industrial Control
Features
o 10-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
_________________Ordering Information
PART
MAX5304CUA
MAX5304EUA
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 µMAX
Functional Diagram
GND VDD
REF
CONTROL
DAC
REGISTER
INPUT
REGISTER
DAC
FB
OUT
CS
DIN
SCLK
16-BIT
SHIFT
REGISTER
MAX5304
TOP VIEW
Pin Configuration
OUT 1
CS 2
DIN 3
SCLK 4
MAX5304
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  
10-Bit Voltage-Output DAC
in 8-Pin µMAX
____________________________Typical Operating Characteristics (continued)
(VDD = +5V, RL = 5kΩ, CL = 100pF, TA = +25°C, unless otherwise noted.)
MAJOR-CARRY TRANSITION
DIGITAL FEEDTHROUGH (fSCLK = 100kHz)
CS
5V/div
SCLK
2V/div
OUT
AC-COUPLED
100mV/div
10µs/div
OUT
AC-COUPLED
10mV/div
CODE = 512
CS = 5V
2µs/div
OUT
1V/div
DYNAMIC RESPONSE
GND
10µs/div
GAIN = +2V/V, SWITCHING FROM CODE 0 TO 1005
_______________________________________________________________________________________ 5
5 Page 
10-Bit Voltage-Output DAC
in 8-Pin µMAX
R1
REF
+5V
VDD
FB
DAC
OUT
MAX5304
GND
Figure 10. Bipolar Output Circuit
R2
V+
VOUT
V-
R1 = R2 = 10kΩ ±0.1%
+5V
AC 26k
REFERENCE
INPUT
+5V
500mVp-p
10k
MAX495
REF VDD
DAC
OUT
MAX5304
GND
Figure 11. AC Reference Input Circuit
+5V
REF
VDD
DAC
MAX5304
VL
IOUT
OUT 2N3904
FB
GND
R
Figure 12. Digitally Programmable Current Source
Power-Supply Considerations
On power-up, the input and DAC registers are cleared
(set to zero code). For rated MAX5304 performance,
REF must be at least 1.4V below VDD. Bypass VDD with
a 4.7µF capacitor in parallel with a 0.1µF capacitor to
GND. Use short lead lengths, and place the bypass
capacitors as close to the supply pins as possible.
Grounding and Layout Considerations
Digital or AC transient signals on GND can create noise
at the analog output. Connect GND to the highest-qual-
ity ground available. Good PC board ground layout
minimizes crosstalk between the DAC output, reference
input, and digital input. Reduce crosstalk by keeping
analog lines away from digital lines. Wire-wrapped
boards are not recommended.
___________________Chip Information
TRANSISTOR COUNT: 3053
SUBSTRATE CONNECTED TO AGND
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX5304.PDF ] | |
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