[ThermOptics]

General Description
The DN1220 is a subminiature Bipolar Temperature Controller for Thermoelectric Coolers (TEC) used in fixed temperature OEM applications. The device is designed to operate with a Negative Temperature Coefficient (NTC) thermistor that senses the temperature of the object attached to the TEC. Temperature is set with a user selected resistor. Temperature stability of 0.01°C is achieved by the linear Proportional Integral (PI) control loop of the DN1220.

FEATUREs
• Proportional and Integral Control
• Gain and Integrator Time Constants set with Single Resistors. No External Integrator Capacitor Needed.
• Single Power Supply Operation. +5 to +12 Volts D.C.
• – 2 Ampere Drive Capability
• Independent Cool and Heat Current Limit Adjustments
• Temperature Stability Better Than 0.01°C
• Small Size Hybrid Circuit Construction