MAX5138 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Low-Power, Single, 16-/12-Bit, Buffered Voltage-Output DACs

19-4428; Rev 1; 4/09
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Low-Power, Single, 16-/12-Bit,
Buffered Voltage-Output DACs
General Description
The MAX5138/MAX5139 are a family of single-channel
pin-compatible and software-compatible 16-bit and 12-
bit DACs. The MAX5138/MAX5139 are low-power, 16-
bit/12-bit, buffered voltage-output, high-linearity DACs.
They use a precision internal reference or a precision
external reference for rail-to-rail operation. The
MAX5138/MAX5139 accept a wide +2.7V to +5.25V sup-
ply-voltage range to accommodate most low-power and
low-voltage applications. These devices accept a 3-wire
SPI^TM-/QSPI^TM-/MICROWIRE^TM-/DSP-compatible serial
interface to save board space and reduce the complexi-
ty of optically isolated and transformer-isolated applica-
tions. The digital interface’s double-buffered hardware
and software LDAC provide simultaneous output update.
The serial interface features a READY output for easy
daisy-chaining of several MAX5138/MAX5139 devices
and/or other compatible devices. The MAX5138/MAX5139
include a hardware input to reset the DAC outputs to
zero or midscale 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 control and instrumentation applications.
The MAX5138/MAX5139 are available in an ultra-small
(3mm x 3mm), 16-pin TQFN package and are specified
over the -40°C to +105°C extended industrial tempera-
ture 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 Diagram 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
o 16-/12-Bit Resolution in a 3mm x 3mm, 16-Pin
TQFN Package
o Hardware-Selectable on Power-Up or Reset-to-
Zero/Midscale DAC Output
o Double-Buffered Input Registers
o LDAC Asynchronously Updates DAC Output
o READY Facilitates Daisy Chaining
o High-Performance 10ppm/°C Internal Reference
o Guaranteed Monotonic Over All Operating
Conditions
o Wide +2.7V to +5.25V Supply Range
o Rail-to-Rail Buffered Output Operation
o Low Gain Error (Less Than ±0.5% FS) and Offset
(Less Than ±10mV)
o 30MHz 3-Wire SPI-/QSPI-/MICROWIRE-/
DSP-Compatible Serial Interface
o CMOS-Compatible Inputs with Hysteresis
o Low Power Consumption (I_SHDN = 2µA max)
Ordering Information
PART
PIN-PACKAGE
RESOLUTION
(BITS)
MAX5138BGTE+
16 TQFN-EP*
16
MAX5139GTE+
16 TQFN-EP*
12
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Note: All devices are specified over the -40°C to +105°C operating
temperature range.
Pin Configuration
TOP VIEW
12 11 10 9
AVDD 13
8 AGND
REFI 14
REFO 15
AGND 16 ₊
1
MAX5138
MAX5139
*EP
234
7 DIN
6 CS
5 SCLK
*EXPOSED PAD
TQFN
3mm x 3mm
________________________________________________________________ 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.