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PDF MAX5352 Data sheet ( Hoja de datos )
| Número de pieza | MAX5352 | |
| Descripción | Low-Power / 12-Bit Voltage-Output DACs with Serial Interface | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1196; Rev 0; 2/97
Low-Power, 12-Bit Voltage-Output DACs
with Serial Interface
__________________General Description
The MAX5352/MAX5353 combine a low-power, voltage-
output, 12-bit digital-to-analog converter (DAC) and a
precision output amplifier in an 8-pin µMAX or DIP pack-
age. The MAX5352 operates from a single +5V supply,
and the MAX5353 operates from a single +3.3V supply.
Both devices draw 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 MAX5352/MAX5353 ideal for a wide range of appli-
cations, including industrial process control. Other fea-
tures include a software shutdown and power-on reset.
The serial interface is compatible with SPI™/QSPI™
and Microwire™. 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 opto-
couplers.
________________________Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
Remote Industrial Controls
Microprocessor-Controlled Systems
____________________Functional Diagram
______________________________Features
o 12-Bit DAC with Configurable Output Amplifier
o +5V Single-Supply Operation (MAX5352)
+3.3V Single-Supply Operation (MAX5353)
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 and Microwire Compatible
o Schmitt-Trigger Digital Inputs for Direct
Optocoupler Interface
o +3.3V MAX5353 Directly Interfaces with +5V Logic
_________________Ordering Information
PART*
TEMP. RANGE
PIN-PACKAGE
INL
(LSB)
MAX5352ACPA 0°C to +70°C 8 Plastic DIP
±1/2
MAX5352BCPA 0°C to +70°C 8 Plastic DIP
±1
MAX5352ACUA 0°C to +70°C 8 µMAX
±1/2
MAX5352BCUA 0°C to +70°C 8 µMAX
±1
Ordering Information continued at end of data sheet.
*Contact factory for availability of 8-pin SO package.
_______________________Pin Configuration
GND VDD
REF
CONTROL
DAC
REGISTER
INPUT
REGISTER
CS
DIN
SCLK
16-BIT
SHIFT
REGISTER
DAC
MAX5352
MAX5353
FB
OUT
TOP VIEW
OUT 1
CS 2
DIN 3
SCLK 4
MAX5352
MAX5353
8 VDD
7 GND
6 REF
5 FB
DIP/µMAX
SPI and QSPI are registered trademarks of Motorola, Inc. Microwire is a registered 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
1 page  
Low-Power, 12-Bit Voltage-Output DACs
with Serial Interface
ELECTRICAL CHARACTERISTICS: MAX5353 (continued)
(VDD = +3.15V to +3.6V, REF = 1.25V, GND = 0V, RL = 5kΩ, CL = 100pF, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at TA = +25°C. Output buffer connected in unity-gain configuration (Figure 8).)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
TIMING CHARACTERISTICS (Figure 6)
SCLK Clock Period
tCP
100 ns
SCLK Pulse Width High
tCH
40 ns
SCLK Pulse Width Low
CS Fall to SCLK Rise Setup Time
tCL
tCSS
40 ns
40 ns
SCLK Rise to CS Rise Hold Time tCSH
0 ns
DIN Setup Time
tDS
40 ns
DIN Hold Time
SCLK Rise to CS Fall Delay
tDH
tCS0
0 ns
40 ns
CS Rise to SCLK Rise Hold Time tCS1
40 ns
CS Pulse Width High
tCSW
100 ns
Note 4: Guaranteed from code 22 to code 4095 in unity-gain configuration.
Note 5: Accuracy is better than 1LSB for VOUT = 8mV to VDD - 150mV, guaranteed by a power-supply rejection test at the
end points.
Note 6: RL = ∞, digital inputs at GND or VDD.
_______________________________________________________________________________________ 5
5 Page 
Low-Power, 12-Bit Voltage-Output DACs
with Serial Interface
Table 1. Serial-Interface Programming Commands
16-BIT SERIAL WORD
S0
C2 C1
X0
X0
C0
0
1
D11...............D0
MSB
LSB
12 bits of data
12 bits of data
S0
0
0
X1
0
XXXXXXXXXXXX X
11
01
“X” = Don’t care
1
1
XXXXXXXXXXXX
XXXXXXXXXXXX
X
X
FUNCTION
Load input register; DAC register immediately updated (also exit shutdown).
Load input register; DAC register unchanged.
Update DAC register from input register (also exit shutdown; recall previ-
ous state).
Shutdown
No operation (NOP)
CS
SCLK
DIN
18
C2 C1 C0 D11 D10 D9 D8 D7
9 16
D6 D5 D4 D3 D2 D1 D0 S0
COMMAND
EXECUTED
Figure 5. Serial-Interface Timing Diagram
CS
SCLK
DIN
tCSO tCSS
tDS tDH
tCH
tCL
tCSW
tCP tCSH
tCS1
Figure 6. Detailed Serial-Interface Timing Diagram
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MAX5352.PDF ] | |
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