Specifications

139Calibration and Automated Calibration: Recommended Solutions
Recommended Solutions
*Future product—contact the factory for availability.
Part Description Features Benefits
CDPots
MAX5481 1024-tap (10-bit) CDPot with SPI or
up/down interface
1.0µA (max) in standby, 400µA
(max) during memory write
Minimal power use for battery-
operated portable devices.
MAX5477 Dual, 256-step (8-bit) CDPot with
I
2
C interface
EEPROM write protection, single-
supply operation (2.7V to 5.25V)
EEPROM protection retains
calibration data for safety.
MAX5422 Single, 256-step (8-bit) CDPot with
SPI interface
Tiny (3mm x 3mm) TDFN package Saves PCB space for portable
products.
MAX5427 32-step (5-bit), OTP CDPot OTP or OTP plus adjustment Versatile, reduces component
count by performing two
functions.
DS3502 128-step (7-bit) CDPot with I
2
C
interface
High output voltage range (up to
15.5V)
Permits direct calibration of high-
voltage circuits.
CDACs
MAX5105, MAX5115 Quad, 8-bit CDACs with
independent high and low
reference inputs
Rail-to-rail output buffers, choice
of I
2
C or SPI interface
Selectable voltage range improves
granularity and prevents unsafe
adjustments.
MAX5106 Quad, 8-bit CDAC with
independently adjustable voltage
ranges
Allows customization of calibration
granularity, small 5mm x 6mm
package
Saves PCB space for portable
products.
MAX5214/MAX5216 Ultra-low-power, 1-channel,
14-/16-bit voltage-output DACs
Quiescent current < 80µA max, SPI
interface
High resolution and external
reference provides fine granularity
and flexibility for automated
calibration systems.
MAX5715* Quad, 8-/10-/12-bit DACs with
internal reference
8-/10-/12-bit voltage-output DAC,
three-voltage-selectable internal
reference, SPI interface
High integration provides multiple
calibration points in a small space.
MAX5725* Octal, 12-bit DAC with watchdog
timer and internal reference
8-/10-/12-bit resolution, selectable
internal reference, watchdog timer,
SPI interface
Watchdog timer allows resets to
defined calibration levels in event
of communication failure.
CRefs and E
2
Refs
MAX6160 Adjustable CRef (1.23V to 12.4V) Low 200mV dropout, 75µA supply
current is virtually independent of
input-voltage variations
Longer battery life in portable
equipment.
MAX6037 Adjustable CRef (1.184V to 5V) Shutdown mode (500nA, max), low
100mV (max) dropout at 1mA load,
5-pin SOT23 (9mm
2
)
Battery friendly and small size for
portable applications.
MAX6173 Precise voltage reference with
temperature sensor
±0.05% (max) initial accuracy,
±3ppm/°C (max) temperature
stability
Allows analog system gain trim
while maintaining the digital
accuracy of ADCs and DACs.
MAX6220 Low-noise, precision voltage
reference
8V to 40V input-voltage range,
ultra-low 1.5µV
P-P
noise (0.1Hz to
10Hz)
Dependable operation from
unstable power (batteries,
automotive power, or emergency
power generators).
DS4303
Electronically programmable
voltage reference
Wide, adjustable output voltage
range can be set within 300mV
of the supply rails with ±1mV
accuracy
A calibration voltage is memorized
forever using one simple GPIO pin.