Rainbow Electronics MAX5139 - Manual

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
Features
♦ 16-/12-Bit Resolution in a 3mm x 3mm, 16-Pin
TQFN Package
♦ Hardware-Selectable on Power-Up or Reset-to-
Zero/Midscale DAC Output
♦ Double-Buffered Input Registers
♦ LDAC Asynchronously Updates DAC Output
♦ 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 (I
SHDN = 2µA max)
MAX5138/MAX5139
Low-Power, Single, 16-/12-Bit,
Buffered Voltage-Output DACs
________________________________________________________________ Maxim Integrated Products 1
15
16
14
13
5
6
7
LDAC
N.C.
8
N.C.
READY N.C. OUT
1 3
REFI
4
12 10 9
REFO
AGND
AGND
DIN
CS
SCLK *EP
*EXPOSED PAD
MAX5138
MAX5139
M/Z
DVDD
2
11
AVDD
TQFN
3mm x 3mm
+
TOP VIEW
Pin Configuration
19-4428; Rev 1; 4/09
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.
EVALUATION KIT
AVAILABLE
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.
Ordering Information
+ 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.
PART PIN-PACKAGE
RESOLUTION
(BITS)
MAX5138BGTE+ 16 TQFN-EP* 16
MAX5139GTE+ 16 TQFN-EP* 12