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PDF MAX5137 Data sheet ( Hoja de datos )
| Número de pieza | MAX5137 | |
| Descripción | (MAX5134 - MAX5137) Voltage-Output DACs | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-4209; Rev 1; 10/08
EVAALVUAAILTAIOBNLEKIT
Pin-/Software-Compatible,
16-/12-Bit, Voltage-Output DACs
www.datasheet4u.com
General Description
The MAX5134–MAX5137 is a family of pin-compatible
and software-compatible 16-bit and 12-bit DACs. The
MAX5134/MAX5135 are low-power, quad 16-/12-bit,
buffered voltage-output, high-linearity DACs. The
MAX5136/MAX5137 are low-power, dual 16-/12-bit,
buffered voltage-output, high-linearity DACs. They use
a precision internal reference or a precision external ref-
erence for rail-to-rail operation. The MAX5134–MAX5137
accept a wide +2.7V to +5.25V supply-voltage range to
accommodate most low-power and low-voltage applica-
tions. These devices accept a 3-wire SPITM-/QSPITM-
/MICROWIRETM-/DSP-compatible serial interface to save
board space and reduce the complexity of optically iso-
lated and transformer-isolated applications. The digital
interface’s double-buffered hardware and software
LDAC provide simultaneous output updates. The serial
interface features a READY output for easy daisy-chain-
ing of several MAX5134–MAX5137 devices and/or other
compatible devices. The MAX5134–MAX5137 include a
hardware input to reset the DAC outputs to zero or mid-
scale upon power-up or reset, providing additional safety
for applications that drive valves or other transducers
that need to be off during power-up. The high linearity of
the DACs makes these devices ideal for precision con-
trol and instrumentation applications. The MAX5134–
MAX5137 are available in an ultra-small (4mm x 4mm),
24-pin TQFN package and are specified over the -40°C
to +105°C extended industrial temperature range.
Applications
Automatic Test Equipment
Automatic Tuning
Communication Systems
Data Acquisition
Gain and Offset Adjustment
Portable Instrumentation
Power-Amplifier Control
Process Control and Servo Loops
Programmable Voltage and Current Sources
Functional Diagrams and Typical Operating Circuit appear
at end of data sheet.
SPI and QSPI are trademarks of Motorola Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Features
♦ 16-/12-Bit Resolution in a 4mm x 4mm, 24-Pin
TQFN Package
♦ Hardware-Selectable to Zero/Midscale DAC
Output on Power-Up or Reset
♦ Double-Buffered Input Registers
♦ LDAC Asynchronously Updates DAC Outputs
Simultaneously
♦ READY Facilitates Daisy Chaining
♦ High-Performance 10ppm/°C Internal Reference
♦ Guaranteed Monotonic Over All Operating
Conditions
♦ Wide +2.7V to +5.25V Supply Range
♦ Rail-to-Rail Buffered Output Operation
♦ Low Gain Error (Less Than ±0.5%FS) and Offset
(Less Than ±10mV)
♦ 30MHz 3-Wire SPI-/QSPI-/MICROWIRE-/
DSP-Compatible Serial Interface
♦ CMOS-Compatible Inputs with Hysteresis
♦ Low-Power Consumption (ISHDN = 2µA max)
Ordering Information
PART
PIN-
PACKAGE
RESOLUTION INL
(BITS)
(LSB)
MAX5134AGTG+ 24 TQFN-EP*
16 Quad
±8
MAX5135GTG+ 24 TQFN-EP*
12 Quad
±1
MAX5136AGTG+ 24 TQFN-EP*
16 Dual
±8
MAX5137GTG+ 24 TQFN-EP*
12 Dual
+Denotes a lead-free/RoHS-compliant package.
±1
*EP = Exposed pad.
Note: All devices are specified over the -40°C to +105°C operating
temperature range.
Pin Configuration
TOP VIEW
18 17 16 15 14 13
GND 19
12 SCLK
N.C. 20
11 N.C.
REF0 21
REFI 22
N.C. 23
AVDD 24
+1
MAX5134–
MAX5137
*EP
10 CS
9 DIN
8 N.C.
7 GND
2 3 4 56
THIN QFN
*EXPOSED PAD.
4mm x 4mm
**N.C. FOR THE MAX5136/MAX5137.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
www.datasheet4u.com
(TA = +25°C, unless otherwise noted.)
Pin-/Software-Compatible,
16-/12-Bit, Voltage-Output DACs
Typical Operating Characteristics
MAX5134/MAX5136 INTEGRAL
NONLINEARITY vs. DIGITAL INPUT CODE
9
6
3
0
-3
-6
-9
0 16384 32768 49152 65536
DIGITAL INPUT CODE (LSB)
MAX5134/MAX5136 DIFFERENTIAL
NONLINEARITY vs. DIGITAL INPUT CODE
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
16384 32768 49152
DIGITAL INPUT CODE (LSB)
65536
MAX5134/MAX5136 OFFSET ERROR
vs. ANALOG SUPPLY VOLTAGE
10
8
6
4
2
0
-2
-4
-6
-8
-10
2.7 3.2 3.7 4.2 4.7 5.2
AVDD ( V )
MAX5134/MAX5136 INTEGRAL
NONLINEARITY vs. ANALOG SUPPLY VOLTAGE
9
7
5
3
1
-1
-3
-5
-7
-9
2.7 3.2 3.7 4.2 4.7 5.2
AVDD ( V )
MAX5134/MAX5136 INTEGRAL
NONLINEARITY vs. TEMPERATURE
9
7
5
3
1
-1
-3
-5
-7
-9
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
MAX5134/MAX5136 DIFFERENTIAL
NONLINEARITY vs. ANALOG SUPPLY VOLTAGE
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
2.7 3.2 3.7 4.2 4.7 5.2
AVDD ( V )
MAX5134/MAX5136 DIFFERENTIAL
NONLINEARITY vs. TEMPERATURE
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-40 -20
0 20 40 60
TEMPERATURE (°C)
80 100
MAX5135/MAX5137 DIFFERENTIAL
NONLINEARITY vs. DIGITAL INPUT CODE
0.10
0.08
0.06
0.04
0.02
0
-0.02
-0.04
-0.06
-0.08
-0.10
0
1024 2048 3072
DIGITAL INPUT CODE (LSB)
4096
MAX5135/MAX5137 INTEGRAL
NONLINEARITY vs. DIGITAL INPUT CODE
1.00
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
0
1024 2048 3072
DIGITAL INPUT CODE (LSB)
4096
_______________________________________________________________________________________ 5
5 Page 
Pin-/Software-Compatible,
16-/12-Bit, Voltage-Output DACs
www.daTtahseheMet4AuX.c5o1m34/MAX5136 DAC code is unipolar binary
with VOUT_ = (code/65,536) x VREF. The MAX5135/
MAX5137 DAC code is unipolar binary with VOUT_ =
(code/4096) x VREF. See Table 1 for the serial interface
commands.
Connect the MAX5134–MAX5137 DVDD supply to the
supply of the host DSP or microprocessor. The AVDD
supply may be set to any voltage within the operating
range of 2.7V to 5.25V, but must be greater than or
equal to the DVDD supply.
Writing to the Devices
Write to the MAX5134–MAX5137 using the following
sequence:
1) Drive CS low, enabling the shift register.
2) Clock 24 bits of data into DIN (C7 first and D0 last),
observing the specified setup and hold times. Bits
D15–D0 are the data bits that are written to the
internal register.
3) After clocking in the last data bit, drive CS high. CS
must remain high for 33ns before the next transmis-
sion is started.
Figure 1 shows a write operation for the transmission of
24 bits. If CS is driven high at any point prior to receiving
24 bits, the transmission is discarded.
READY
Connect READY to a microcontroller (µC) input to moni-
tor the serial interface for valid communications. The
READY pulse appears 24 clock cycles after the nega-
tive edge of CS (Figure 4). Since the MAX5134–
MAX5137 look at the first 24 bits of the transmission fol-
lowing the falling edge of CS, it is possible to daisy
chain devices with different command word lengths.
READY goes high 16ns after CS is driven high.
+5V
SCLK
SK
MAX5134– DIN
MAX5137
READY*
SO
MICROWIRE
PORT
SI*
CS I/O
*THE READY-TO-SI CONNECTION IS NOT REQUIRED FOR WRITING TO THE DEVICES
*BUT MAY BE USED FOR TRANSMISSION VERIFICATION.
Figure 2. Connections for MICROWIRE
READY*
SS
MISO*
MAX5134– DIN
MAX5137
SCLK
MOSI
SPI/QSPI
PORT
SCK
CS I/O
*THE READY-TO-MISO CONNECTION IS NOT REQUIRED FOR WRITING TO THE
DEVICES BUT MAY BE USED FOR TRANSMISSION VERIFICATION.
Figure 3. Connections for SPI/QSPI
CS
DIN
SCLK
READY 1
READY 2
READY 3
SLAVE 1 DATA
SLAVE 2 DATA
SLAVE 3 DATA
1234
20 21 22 23 24 1 2 3 4 5
21 22 23 24 1 2 3 4 5
21 22 23 24
Figure 4. READY Timing
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX5137.PDF ] | |
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