Datasheet

9-13
Typical Performance Curves
FIGURE 3. ICM7211 OPERATING SUPPLY CURRENT AS A
FUNCTION OF SUPPLY VOLTAGE
FIGURE 4. ICM7211 BACKPLANE FREQUENCY AS A
FUNCTION OF SUPPLY VOLTAGE
FIGURE 5. ICM7212 LED SEGMENT CURRENT AS A
FUNCTION OF OUTPUT VOLTAGE
FIGURE 6. ICM7212 LED SEGMENT CURRENT AS A
FUNCTION OF BRIGHTNESS CONTROL VOLTAGE
FIGURE 7. ICM7212 OPERATING POWER (LED DISPLAY) AS A FUNCTION OF SUPPLY VOLTAGE
V
SUPP
(V)
4123 675
30
25
20
15
10
5
I
OP
(µA)
LCD DEVICES, TEST CIRCUIT
DISPLAY BLANK, PIN 36 OPEN
T
A
= -20
o
C
T
A
= 70
o
C
T
A
= 25
o
C
V
SUPP
(V)
4123 65
180
150
120
90
60
30
ƒ
BP
(Hz)
LCD DEVICES, T
A
= 25
o
C
0
C
OSC
= 220pF
C
OSC
= 22pF
C
OSC
= 0pF
(PIN 36 OPEN)
V
O
(V)
4123 65
15
10
5
I
SEG
(mA)
PIN 5 AT V
DD
, T
A
= 25
o
C
0
V
SUPP
= 6V
V
SUPP
= 5V
V
SUPP
= 4V
VOLTAGE ON BRT PIN 5 (V)
4123 65
12
10
8
6
4
2
I
SEG
(mA)
SEGMENT OUTPUT AT +3V
T
A
= 25
o
C
0
0
LED DEVICES, DISPLAY ALL EIGHTS
LED FORWARD VOLTAGE DROP
V
FLED
= 1.7V, PIN 5 AT V
DD
, T
A
= 25
o
C
V
SUPP
(V)
465
1800
1500
1200
900
600
300
0
POWER (mW)
ICM7211, ICM7212