Typical operating characteristics – Rainbow Electronics MAX6920 User Manual
Page 4
MAX6920
12-Output, 76V, Serial-Interfaced
VFD Tube Driver
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= 5.0V, V
BB
= 76V, and T
A
= +25°C, unless otherwise noted.)
TUBE SUPPLY CURRENT (I
BB
)
vs. TEMPERATURE (OUTPUTS LOW)
MAX6920 toc01
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
110
60
85
10
35
-15
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
-40
V
BB
= 76V
V
BB
= 40V
V
BB
= 8V
TUBE SUPPLY CURRENT (I
BB
)
vs. TEMPERATURE (OUTPUTS HIGH)
MAX6920 toc02
TEMPERATURE (
°C)
SUPPLY CURRENT (mA)
100
80
40
60
0
20
-20
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
-40
120
V
BB
= 76V
V
BB
= 40V
V
BB
= 8V
LOGIC SUPPLY CURRENT (I
CC
)
vs. TEMPERATURE (OUTPUTS LOW)
MAX6920 toc03
TEMPERATURE (
°C)
SUPPLY CURRENT (
µ
A)
100
80
40
60
0
20
-20
50
100
150
200
250
300
350
400
0
-40
120
V
CC
= 5V, CLK = 5MHz
V
CC
= 3.3V, CLK = 5MHz
V
CC
= 5V, CLK = IDLE
V
CC
= 3.3V, CLK = IDLE
SUPPLY CURRENT (I
CC
)
vs. TEMPERATURE (OUTPUTS HIGH)
MAX6920 toc04
TEMPERATURE (
°C)
SUPPLY CURRENT (
µ
A)
60
10
300
350
400
450
500
550
600
250
-40
110
V
CC
= 5V, CLK = 5MHz
V
CC
= 3.3V, CLK = 5MHz
V
CC
= 5V, CLK = IDLE
V
CC
= 3.3V, CLK = IDLE
OUTPUT VOLTAGE (V
BB
- V
H
)
vs. TEMPERATURE (OUTPUT HIGH)
MAX6920 toc05
TEMPERATURE (
°C)
OUTPUT VOLTAGE (V)
100
80
40
60
0
20
-20
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
-40
120
V
BB
= 76V
V
BB
= 40V
V
BB
= 8V
I
OUT
= -40mA
OUTPUT VOLTAGE
vs. TEMPERATURE (OUTPUT LOW)
MAX6920 toc06
TEMPERATURE (
°C)
OUTPUT VOLTAGE (V)
100
80
40
60
0
20
-20
2
4
6
8
10
12
14
0
-40
120
V
BB
= 40V
V
BB
= 8V
V
BB
= 76V
I
OUT
= 4mA
OUTPUT RISE AND FALL WAVEFORM
MAX6920 toc11
1
µs/div
BLANK
2V/div
OUT_
20V/div