AD22105ARZ Analog Devices Inc, AD22105ARZ Datasheet - Page 8

• Manufacturer Part Number: AD22105ARZ
• Description: IC TEMP SENSOR/SWITCH LV 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD22105ARZ

• Sensing Temperature: -40°C ~ 150°C
• Output Type: Open Collector
• Voltage - Supply: 2.7 V ~ 7 V
• Accuracy: ±0.5°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Ic Output Type: Switch
• Sensing Accuracy Range: ± 0.5°C
• Supply Current: 120µA
• Supply Voltage Range: 2.7V To 7V
• Sensor Case Style: SOIC
• No. Of Pins: 8
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD22105
Leakage at the R
Leakage currents at the R
moist environment or printed circuit board contamination, can
have an adverse effect on the programmed setpoint temperature
of the AD22105. Depending on its source, leakage current can
flow into or out of the R
setpoint temperature could be higher or lower than the intended
setpoint temperature by about 1 C for each 75 nA of leakage.
With a 5 V power supply, an isolation resistance of 100 M
would create 50 nA of leakage current giving a setpoint
temperature error of about 0.7 C (the R
potential). A guard ring can be placed around the R
protect against leakage from the power supply pin (as shown in
Figure 13).
OUT
Figure 13. Suggested PCB Layout
SET
PIN 1
Pin
SET
C1
SET
pin. Consequently, the actual
pin, such as those generated from a
V
S
SET
R
SET
pin is near ground
GND
SET
node to
–8–
0.1574 (4.00)
0.1497 (3.80)
0.0098 (0.25)
0.0040 (0.10)
SEATING
PLANE
PIN 1
Dimensions shown in inches and (mm).
0.1968 (5.00)
0.1890 (4.80)
0.0500
(1.27)
BSC
8
1
OUTLINE DIMENSIONS
0.0192 (0.49)
0.0138 (0.35)
0.0688 (1.75)
0.0532 (1.35)
5
4
8-Lead SOIC
0.2440 (6.20)
0.2284 (5.80)
(SO-8)
0.0098 (0.25)
0.0075 (0.19)
8
0
0.0196 (0.50)
0.0099 (0.25)
0.0500 (1.27)
0.0160 (0.41)
x 45
REV. 0