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ADN8834CB-EVALZ/ADN8834CP-EVALZ
UG-858
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 ADN8834 Ultracompact 1.5 A Thermoelectric Cooler (TEC) Controller
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 16
FEATURES
Full featured evaluation boards for the ADN8834
Complete TEC controller with integrated 1.5 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
Input for NTC thermistor connection
Output for TEC module wires
2.5 V reference output
Disable jumper
40 mm × 25 mm WLCSP evaluation board size
45 mm × 25 mm LFCSP evaluation board size
DOCUMENTS NEEDED
ADN8834 data sheet
ADN8834CB-EVALZ AND ADN8834CP-EVALZ
EVALUATION BOARDS
Figure 1. ADN8834CB-EVALZ WLCSP Evaluation Board
Figure 2. ADN8834CP-EVALZ LFCSP Evaluation Board
GENERAL DESCRIPTION
The ADN8834CB-EVAL Z and ADN8834CP-EVALZ are
configurable evaluation boards designed to work with various
TEC modules and thermistors. The ADN8834 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 1.5 A,
and the maximum TEC voltage is programmed to 3 V using
two on-board resistor dividers. The temperature setpoint circuit
is optimized to work with a 10 kΩ NTC thermistor. The on-board
proportional integral differential (PID) compensation network
components can be replaced by soldering different value compo-
nents that match the temperature control loop characteristic
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 ADN8834 base
board, which has adjustable components for the tunable analog
thermal PID network, the temperature setpoint, and maximum
TEC current and TEC voltage limits.
13315-001
13315-002
