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ADN8834ACBZ-R7 Datasheet(PDF) 10 Page - Analog Devices

Part # ADN8834ACBZ-R7
Description  Ultracompact, 1.5 A Thermoelectric Cooler (TEC) Controller
PDF  27 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADN8834ACBZ-R7 Datasheet(HTML) 10 Page - Analog Devices

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ADN8834
Data Sheet
Rev. B | Page 10 of 27
–20
–15
–10
–5
0
5
10
15
20
0.5
1.0
1.5
2.0
2.5
TEC VOLTAGE (V)
VIN = 3.3V
VIN = 5V
Figure 16. VTEC Voltage Reading Error vs. TEC Voltage in Cooling Mode
–
20
–
15
–
10
–
5
0
5
10
15
20
–2.5
–2.0
–1.5
–1.0
–0.5
TEC VOLTAGE (V)
VIN = 3.3V
VIN = 5V
Figure 17. VTEC Voltage Reading Error vs. TEC Voltage in Heating Mode
CH1 500mV
CH2 500mV
M200ms
A CH4
–108mA
T
–28.000ms
B
W
B
W
CH4 200mA
Ω BW
4
1
PWM (TEC–)
TEC CURRENT
LDO (TEC+)
Figure 18. Cooling to Heating Transition
4
1
CH1 500mV
CH2 500mV
M10ms
A CH4
–8mA
T
5.4ms
B
W
B
W
CH3 300mA
Ω BW
PWM (TEC–)
TEC CURRENT
LDO (TEC+)
Figure 19. Zero Crossing TEC Current Zoom in from Heating to Cooling
4
1
CH1 500mV
CH2 500mV
M10ms
A CH4
12mA
T
5.4ms
B
W
B
W
CH3 200mA
Ω BW
PWM (TEC–)
TEC CURRENT
LDO (TEC+)
Figure 20. Zero Crossing TEC Current Zoom in from Cooling to Heating
EN
TEC CURRENT
LDO (TEC–)
PWM (TEC+)
CH1 1V
CH2 1V
M20.0ms
A CH3
800mV
T
40ms
B
W
B
W CH3 2V
B
W
CH4 500mA
Ω BW
3
4
1
Figure 21. Typical Enable Waveforms in Cooling Mode,
VIN = 3.3 V, Load = 2 Ω, TEC Current = 1 A



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