ADN8830ACPZ Analog Devices Inc, ADN8830ACPZ Datasheet
ADN8830ACPZ
Specifications of ADN8830ACPZ
Q2376189
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ADN8830ACPZ Summary of contents
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FEATURES High Efficiency Small Size LFCSP Low Noise: <0.5% TEC Current Ripple Long-Term Temperature Stability: Temperature Lock Indication Temperature Monitoring Output Oscillator Synchronization with an External Signal Clock Phase Adjustment for Multiple Controllers Programmable Switching Frequency ...
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ADN8830–SPECIFICATIONS Parameter TEMPERATURE STABILITY Long-Term Stability PWM OUTPUT DRIVERS Output Transition Time t Nonoverlapping Clock Delay Output Resistance R Output Voltage Swing OUT A Output Voltage Ripple Output Current Ripple LINEAR OUTPUT AMPLIFIER Output Resistance R R Output Voltage Swing ...
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ABSOLUTE MAXIMUM RATINGS* Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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ADN8830 Pin No. Mnemonic Type 1 THERMFAULT Digital Output 2 THERMIN Analog Input SD 3 Digital Input 4 TEMPSET Analog Input 5 TEMPLOCK Digital Output VREF Analog Output 8 AVDD Power 9 OUT B Analog Input 10 ...
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TIME (20ns/DIV) TPC 1. N1 and P1 Rise Time TIME (20ns/DIV) ...
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ADN8830 1,000 150k 990 FREQ 980 970 960 950 940 930 920 –40 –15 10 TEMPERATURE ( C) TPC 7. Switching Frequency vs. Temperature –40 ...
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APPLICATION NOTES Principle of Operation The ADN8830 is a controller for a TEC and is used to set and stabilize the temperature of the TEC. A voltage applied to the input of the ADN8830 corresponds to a target temperature setpoint. ...
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ADN8830 response of the TEC’s temperature either in terms of settling time or maximum current change. Details of how to adjust the compen- sation network are given in the Compensation Loop section. The ADN8830 can be easily integrated with a ...
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Although the thermistor has a nonlinear relationship to tem- perature, near optimal linearity over a specified temperature range can be achieved with the proper value of R resistance of the thermistor must be known, where ...
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ADN8830 To eliminate the resolution of the DAC as the principal source of system error, the step size of each bit, V than the desired system resolution. A practical value for absolute DAC resolution is the equivalent of 0.05 C. ...
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The phase adjusted output from the ADN8830 is available at SYNCOUT (Pin 28). This pin can be used as a master clock signal for driving other ADN8830 devices. Multiple ADN8830 devices can be either driven from a single master ADN8830 ...
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ADN8830 The unity-gain crossover frequency of the feedforward amplifier is given TEC GAIN ensure stability, the unity-gain crossover frequency should be lower than the thermal time constant of ...
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Using TEMPOUT to Measure Temperature The TEMPOUT pin is a voltage that is proportional to the difference between the target temperature and the measured thermistor temperature. The full equation for the voltage at TEMPOUT is TEMPOUT ...
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ADN8830 Inductor Selection In addition to the external transistors, the PWM amplifier requires an inductor and a capacitor at its output to filter the switched output waveform. Proper inductor selection is important to achieve the best efficiency. The duty cycle ...
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PVDD Figure 14. Equivalent Circuit for PWM Amplifier and Filter In this circuit the TEC resistance the parasitic L resistance of the inductor combined with the ...
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ADN8830 The gate drive outputs for the PWM amplifier at P1 (Pin 21) and N1 (Pin 22) have a typical nonoverlap delay of 65 ns. This is done to ensure that one FET is completely off before the other FET ...
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Although the FETs that drive OUT A alternate between Q1 and Q2 being on, they have an equivalent series resistance that is equal to a weighted average of their r DS – EQIV ...
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ADN8830 The voltmeter to the TEC or output load should include the series ammeter since the power delivered to the ammeter is considered part of the total output power. However, the voltmeter measuring the voltage delivered to the ADN8830 circuit ...
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Power Supply Ripple Minimizing ripple on the power supply voltage can be an impor- tant consideration, particularly in signal source laser applications. If the laser diode is operated from the same supply rail as the TEC controller, ripple on the ...
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ADN8830 R3 82.5 4.99k R3 82.5 RTD Figure 22. Using an RTD for Temperature Feedback to the ADN8830 If the voltage at V drops below turned off and the SY X VLIM pin ...
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Using an RTD for Temperature Sensing The ADN8830 can be used with a resistive temperature device (RTD) as the temperature feedback sensor. The resistance of an RTD is linear with respect to temperature, offering an advan- tage over thermistors that ...
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ADN8830 PIN 1 INDICATOR 12 MAX 1.00 0.85 0.80 SEATING PLANE OUTLINE DIMENSIONS 32-Lead Lead Frame Chip Scale Package [LFCSP] (CP-32-1) Dimensions shown in millimeters 5.00 BSC SQ 0.60 MAX 0.50 BSC 4.75 TOP BSC SQ VIEW 0.50 0.40 0.30 ...
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Revision History Location 11/03—Data Sheet Changed from REV REV. C. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . ...
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