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ADN8835CP-EVALZ User Guide
UG-951
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel : 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the ADN8835 Ultracompact, 3 A Thermoelectric Cooler (TEC) Controller
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 13
FEATURES
Full featured evaluation board for the ADN8835; the device
includes the following features:
Complete TEC controller with integrated 3 A TEC driver
Operating voltage range: V
IN
= 2.7 V to 5.5 V
TEC voltage and current operation monitoring
Independent TEC heating and cooling current-limit settings
Programmable maximum TEC voltage
External synchronization from 1.85 MHz to 3.25 MHz
2.5 V reference output
Input for NTC thermistor connection
Output for TEC module wires
Disable jumper
45 mm × 25 mm evaluation board size
ADN8835CP-EVALZ EVALUATION BOARD
14342-001
Figure 1.
GENERAL DESCRIPTION
The ADN8835CP-EVALZ is a configurable evaluation board
designed to work with various TEC modules and thermistors.
The ADN8835, which is included on the evaluation board,
delivers and controls bidirectional current through a TEC
controller using two pairs of the complementary integrated
MOSFETs in an H bridge configuration.
The TEC cooling and heating current limits are set to 3 A, and
the maximum TEC voltage is programmed to 3.5 V using two
on-board resistor dividers. The temperature setpoint circuit is
optimized to work with a 10 kΩ negative thermal coefficient
(NTC) thermistor. The on-board proportional integral differential
(PID) compensation network components can be replaced by
soldering different value components that match the temperature
control loop characteristics with the thermal load to achieve the
required response time and temperature stability. The cooling and
heating TEC current limits and maximum TEC voltage setting
can also be modified by changing the values of the corresponding
components.
In addition, the board can be plugged into the ADN8835 base
board, which has adjustable components for the tunable analog
thermal PID network, the temperature setpoint, and the
maximum TEC current and TEC voltage limits.
Full specifications on the ADN8835 are available in the ADN8835
data sheet, which should be consulted in conjunction with this
user guide when working with the evaluation board.
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