Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) uMAX 8

14-/16-Bit, Low-Power, Buffered Output,

Rail-to-Rail DACs with SPI Interface

MAX5214/MAX5216

19-5651; Rev 2; 7/13

General Description

The MAX5214/MAX5216 are pin-compatible, 14-bit

and 16-bit digital-to-analog converters (DACs). The

MAX5214/MAX5216 are single-channel, low-power, buff-

ered voltage-output DACs. The devices use a precision

external reference applied through the high resistance

input for rail-to-rail operation and low system power

consumption. The MAX5214/MAX5216 accept a wide

2.7V to 5.5V supply voltage range. Power consump-

tion is extremely low to accommodate most low-power

and low-voltage applications. These devices feature

a 3-wire SPI-/QSPIK-/MICROWIREM-/DSP-compatible

serial interface to save board space and to reduce

the complexity in isolated applications. The MAX5214/

MAX5216 minimize the digital noise feedthrough from

input to output with SCLK and DIN input buffers pow-

ered down after completion of each serial input frame.

On power-up, the MAX5214/MAX5216 reset the DAC

output to zero, providing additional safety for applica-

tions that drive valves or other transducers that need

to be off on power-up. The DAC output is buffered

resulting in a low supply current of 80FA (max) and

a low offset error of Q0.25mV. A zero level applied to

the CLR pin asynchronously clears the contents of the

input and DAC registers and sets the DAC output to

zero independent of the serial interface. The MAX5214/

MAX5216 are available in an ultra-small (3mm x 5mm),

8-pin FMAX

package and are specified over the

-40NC to +105NC extended industrial temperature range.

Applications

2-Wire Sensors

Communication Systems

Automatic Tuning

Gain and Offset Adjustment

Power Amplifier Control

Process Control and Servo Loops

Portable Instrumentation

Programmable Voltage and Current Sources

Automatic Test Equipment

Features

S Low-Power Consumption (80µA max)

S 14-/16-Bit Resolution in a 3mm x 5mm, 8-Pin

µMAX Package

S Relative Accuracy

±0.40 LSB INL (MAX5214, 14-Bit typ, ±1 LSB max)

±1.2 LSB INL (MAX5216, 16-Bit

typ, ±4 LSB max

)

S Guaranteed Monotonic Over All Operating Ranges

S Low Gain and Offset Error

S Wide 2.7V to 5.5V Supply Range

S Rail-to-Rail Buffered Output Operation

S Safe Power-On Reset (POR) to Zero DAC Output

S Fast 50MHz, 3-Wire, SPI/QSPI/MICROWIRE-

Compatible Serial Interface

S Schmitt-Trigger Inputs for Direct Optocoupler

Interface

S Asynchronous CLR Clears DAC Output to Code 0

S High Reference Input Resistance for Power

Reduction

S Buffered Voltage Output Directly Drives 10kI

Loads

QSPI is a trademark of Motorola, Inc.

MICROWIRE is a registered trademark of National

Semiconductor Corp.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Functional Diagram

EVALUATION KIT AVAILABLE

SERIAL-TO-

PARALLEL

CONVERTER

INPUT

DAC

CLR

POR

14-/16-BIT

DAC

BUFFER

SCLK

DIN

GND

OUT

MAX5214

MAX5216

REF

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

Summary of content (17 pages)

PAGE 1
EVALUATION KIT AVAILABLE MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface General Description The MAX5214/MAX5216 are pin-compatible, 14-bit and 16-bit digital-to-analog converters (DACs). The MAX5214/MAX5216 are single-channel, low-power, buffered voltage-output DACs. The devices use a precision external reference applied through the high resistance input for rail-to-rail operation and low system power consumption. The MAX5214/MAX5216 accept a wide 2.7V to 5.
PAGE 2
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface ABSOLUTE MAXIMUM RATINGS Maximum Current into Any Input or Output..................... Q50mA Operating Temperature Range......................... -40NC to +105NC Storage Temperature Range............................. -65NC to +150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC VDD to GND..........................
PAGE 3
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface ELECTRICAL CHARACTERISTICS (continued) (VDD = 2.7V to 5.5V, VREF = 2.5V to VDD, CL = 60pF, RL = 10kI, TA = -40NC to +105NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2) PARAMETER SYMBOL Resistive Load (Note 6) CONDITIONS RL MIN TYP MAX 5 Short-Circuit Current VDD = 5.
PAGE 4
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface ELECTRICAL CHARACTERISTICS (continued) (VDD = 2.7V to 5.5V, VREF = 2.5V to VDD, CL = 60pF, RL = 10kI, TA = -40NC to +105NC, unless otherwise noted. Typical values are at TA = +25NC.) (Note 2) PARAMETER SYMBOL CLR Pulse-Width Low CONDITIONS MIN TYP MAX UNITS tCLPW 20 ns tCSC 20 ns CLR Rise to CS Fall Note 2: Electrical specifications are production tested at TA = +25NC and TA = +105NC.
PAGE 5
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 0 -0.2 1 0 -0.2 -0.4 -0.4 -0.6 -0.6 -0.8 -0.8 -1 -2 -3 -1.0 -1.0 8192 12288 4096 0 16384 -1 -3 MAX5216 32768 49152 0.50 1.0 0.5 0 -0.5 -1.0 3 5 7 0 MIN 11 13 15 17 2.7 DEVICE NUMBER 3.5 3.9 4.3 4.7 SUPPLY VOLTAGE (V) INTEGRAL NONLINEARITY vs. TEMPERATURE INTEGRAL NONLINEARITY vs. TEMPERATURE MAX5214 0.
PAGE 6
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) MAX(ABS(INL)) DISTRIBUTION vs. TEMPERATURE 40 30 20 20 10 10 DIFFERENTIAL NONLINEARITY vs. DIGITAL INPUT CODE 0.5 0.1 -0.1 -0.5 0 -0.1 -0.2 -0.3 -0.3 -0.4 -0.4 -0.5 65536 16384 0 32768 49152 65536 DNL MIN/MAX (VREF = 5.0V/2.5V) DIFFERENTIAL NONLINEARITY vs. SUPPLY VOLTAGE DIFFERENTIAL NONLINEARITY vs.
PAGE 7
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) DIFFERENTIAL NONLINEARITY vs. TEMPERATURE 0.5 0.3 0.4 MAX5216 0.3 0.2 0.2 0.1 DNL (LSB) DNL (LSB) MAX5214 toc10b MAX5214 MAX 0 -0.1 MIN -0.2 0 -0.1 -0.3 -0.4 -0.4 -0.5 -20 0 20 MIN -0.2 -0.3 -40 MAX 0.1 40 60 80 -0.5 100 -40 -20 0 20 TEMPERATURE (°C) OFFSET ERROR vs. SUPPLY VOLTAGE 0.6 1.
PAGE 8
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) VREF = 2.5V -0.01 -40°C TO +105°C BOX METHOD 12 10 -0.02 COUNT (UNITS) GAIN ERROR (%FS) 14 MAX5214 toc15 0 MAX5214 toc16 GAIN ERROR DRIFT vs. TEMPERATURE DISTRIBUTION GAIN ERROR vs. TEMPERATURE -0.03 MAX5214 -0.04 8 6 4 -0.05 2 MAX5216 -0.06 -40 -20 0 20 40 60 80 0 100 0 0.10 0.20 0.30 0.
PAGE 9
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 74 MAX5216 72 70 68 MAX5214 66 64 65 MAX5214 60 55 50 MAX5216 45 62 60 2.7 3.1 3.5 3.9 4.3 4.7 5.1 40 5.5 2.7 3.1 3.5 3.9 4.3 4.7 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SUPPLY CURRENT vs. SUPPLY VOLTAGE (POWER-DOWN MODE) SUPPLY CURRENT (µA) 0.4 0.3 0.2 0.
PAGE 10
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.
PAGE 11
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE vs. OUTPUT CURRENT DIGITAL FEEDTHROUGH MAX5214 toc26 2.50 OUTPUT VOLTAGE (V) VOUT AC-COUPLED 1mV/div MAX5214 toc27 2.55 2.45 2.40 2.35 2.30 VSCLK 5V/div VDD = 5V VREF = 5V 2.25 0 40ns/div 1 2 3 4 5 6 OUTPUT CURRENT (mA) REFERENCE INPUT BANDWIDTH vs. FREQUENCY SUPPLY CURRENT vs.
PAGE 12
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Pin Configuration TOP VIEW REF 1 CS 2 SCLK 3 MAX5214 MAX5216 DIN 4 8 GND 7 VDD 6 OUT 5 CLR µMAX Pin Description PIN NAME 1 REF FUNCTION Reference Voltage Input. Bypass REF with a 0.1FF capacitor to GND. 2 CS 3 SCLK Active-Low Chip-Select Input 4 DIN Data In 5 CLR Active-Low Asynchronous Digital-Clear Input.
PAGE 13
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Serial Interface transfers its contents to the input registers after loading 16/24 bits of data and updates the DAC output immediately after the data is received on the 16-/24-bit falling edge of the clock. To initiate a new data transfer, drive CS high and keep CS high for a minimum of 20ns before the next write sequence. The SCLK can be either high or low between CS write pulses.
PAGE 14
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Writing to the Devices 1) Drive CS low, enabling the shift register. 2) Clock 16/24 bits of data into DIN (MSB first and LSB last), observing the specified setup and hold times. 3) After clocking in the last data bit, drive CS high. CS must remain high for 20ns before the next transmission is started. Figure 1 shows a write operation for the transmission of 16 bits.
PAGE 15
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Applications Information Power-On Reset (POR) When first power is applied to VDD, the input registers are set to zero so the DAC output is set to code zero. To optimize DAC linearity, wait until the supplies have settled. The MAX5214/MAX5216 output voltage range is 0 to VREF. Power Supplies and Bypassing Considerations Bypass VDD with high-quality 0.
PAGE 16
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Typical Operating Circuit POWER SUPPLY IN 100pF 100nF MAX6029 OUT 4.
PAGE 17
MAX5214/MAX5216 14-/16-Bit, Low-Power, Buffered Output, Rail-to-Rail DACs with SPI Interface Revision History REVISION NUMBER REVISION DATE 0 12/10 Initial release 1 6/13 Added an additional electrical grade for MAX5216. Made multiple text edits and updated the Typical Operating Characteristics. 1–17 2 7/13 Updated General Description, Features, and the Electrical Characteristics.