TC811 TelCom Semiconductor, TC811 Datasheet - Page 3

• Manufacturer Part Number: TC811
• Description: 3-1/2 DIGIT A/D CONVERTER WITH HOLD AND DIFFERENTIAL REFERENCE INPUTS
• Manufacturer: TelCom Semiconductor

ELECTRICAL CHARACTERISTICS:
Symbol
TC
Analog Common Section
V
V
Hold Pin Input Section
V
V
LCD Drive Section
V
V
Power Supply
I
NOTES: 1. Input voltages may exceed supply voltages when input current is limited to 100 A.
3-1/2 DIGIT A/D CONVERTER WITH HOLD AND
DIFFERENTIAL REFERENCE INPUTS
PIN CONFIGURATIONS
SUP
CTC
C
IL
IH
SD
SD
SF
TELCOM SEMICONDUCTOR, INC.
2. Dissipation rating assumes device is mounted with all leads soldered to a printed circuit board.
3. Backplane drive is in phase with the segment drive for "segment off" 180 out of phase for "segment on." Frequency is 20 times the
conversion rate. Average DC component is less than 50mV.
1000's
Parameter
Scale Factor Temperature
Coefficient
Analog Common
Temperature Coefficient
Analog Common Voltage
Input Resistance
Input Low Voltage
Input High Voltage
LCD Segment Drive Voltage
LCD Backplane Drive Voltage
Power Supply Current
(MINUS SIGN)
100's
10's
1's
3
HLDR
AB 4
POL
D 1
C 1
B 1
A 1
G 1
E 1
D 2
C 2
B 2
A 2
E 2
D 3
B 3
E 3
F 1
F 2
F 3
NC = NO INTERNAL CONNECTION
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
CONFIGURATION
(40-PIN PDIP)
NORMAL PIN
TC811CPL
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Test Conditions
V
(ext. V
250K from V+ to Analog Common
0 C
"C" Commercial
"I" Industrial
250k from V+ to Analog Common
Pin 1 to Pin 37
Pin 1
Pin 1
V
V
V
f
f
OSC
OSC
OSC
OSC 2
V
C
C
V
V INT
V
V +
TEST
ANALOG
COMMON
V
C AZ
V BUFF
V –
BP
(BACKPLANE)
V +
G
C
A
G
IN
+
+
IN
REF
REF
REF
REF
IN
IN
Supply
2
3
3
3
to V
to V
= 199mV, 0 C
= 0V, V
–
1
+
–
= 16kHz
= 48kHz
+
–
T
REF
100's
–
–
10's
A
= 9V, f
= 9V
= 9V
tc = 0ppm)
70 C
+
to V
CLOCK
OSC 2
OSC 1
HLDR
TEST
–
V
NC
NC
NC
D 1
C 1
B 1
= 9V
+
T
= 32.768kHz, and T
10
11
1
2
3
4
5
6
7
8
9
A
44 43 42 41
12 13 14 15
70 C
TC811CKW
16
40
(PQFP)
V
39 38
17 18
A
+
Min
= 25 C, unless otherwise noted.
2.7
—
—
—
—
—
—
—
—
—
—
– 1.5
4
4
37 36 35 34
19 20
21 22
Typ
3.05
35
35
70
70
90
—
—
—
—
—
1
5
5
27
26
25
24
23
33
32
31
30
29
28
NC
G
C
A 3
G 3
BP
POL
AB 4
E 3
F 3
B 3
Test +1.5
2
3
Max
3.35
100
100
125
75
—
—
—
—
—
5
6
6
TC811
ppm/ C
ppm/ C
ppm/ C
Unit
Volts
V
V
k
—
—
—
V
V
P-P
P-P
A
A
3-139
1
2
3
4
5
6
7
8