IZ8005 Datasheet, PDF (4/6 Pages) Integral Corp. – CLINICAL THERMOMETER

Electrical Characteristics
IZ8005
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V_DD
I_DD
I_STB
F_OSC
R°C
Operating Voltage
Operating Current
Standby Current
Oscillating Frequency
Temperature Measurement
Accuracy at Range 35°C~39°C
—
V_DD = 1.5V, No load
V_DD = 1.5V
V_DD = 1.5V, R_OSC = 820kOhm
—
LCD Electrode Pattern
1.3 1.5
— 60
— 0.3
25.6 32
– 0.1 —
1.65 V
100 mkA
1.0 mkA
38.4 kHz
0.1 °C
SA1 SA2 SA3 SB1 SB2 SB3 SC1 SC2 SC3 SD1 SD2 SD3 SE1
COM1 F1 A1 B1 F2 A2 B2 F3 A3 B3 F4 A4 B4 A5
COM2 E1 G1 C1 E2 G2 C2 E3 G3 C3 E4 G4 C4 B5
COM3 H1 D1 —
— D2 H2 — D3 —
I4
D4 H4 C5
Note: 1/3 duty, 1/2 bias (LCD uses 3V)
Functional Description
• Power sw: push switch to turn the power on or off.
• When power on: push the switch, then it will generate a “beep” sound for 0.125 sec.
a. First displays all the segments on for 2 sec.
b. After a., as described above, then shows the last-time measured temperature for 2.8 sec.
c. After b., shows the self-test temperature (37.00±0.01°C ) for 1 sec. The °C mark
will flash at a speed of
1Hz.
d. After c., displays the highest measured temperature, then the °C mark will flash at a speed of 1Hz.
e. If the temperature is < 32.00°C, the display shows Lo °C.
f. If the temperature is . 43.00°C, the display shows Hi °C.
g. The display always shows the higher temperature during the temperature measurement.
h. If the measured temperature does not change for more than 8 sec, the measurement is over and
the °C mark flash stops.
i. When measurement is over, if the temperature > 37.50°C the buzzer alarms
“beep-beep-beep---beep-beep-beep---” for 4 sec, as follows:
BI ———
BI ———
BI ——— ———
(0.175S) (0.175S) (0.175S) (0.175S) (0.175S) (0.175S) (0.375S)
if the temperature . 37.50°C, the buzzer alarms “beep-beep-beep-beep-” for 4 sec, as follows:
BI ——
(0.5S) (0.5S)
j. It will automatically turn the power off when measurement is over for 8 min 40 sec.
k. When measurement is over, but if the temperature rises within 8 min 40 sec, the °C mark will flash
again ( repeat from step 2-d), and starts to count 8 min 40 sec again.
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