3-1/2 DIGIT A/D CONVERTERS
TC7106
TC7106A
TC7107
TC7107A
ELECTRICAL CHARACTERISTICS
(Cont.) (Note 3)
Parameters
Analog Common Voltage
(With Respect to Pos. Supply)
Temp. Coeff. of
Analog Common
(With Respect
to Pos. Supply)
Temp. Coeff. of
Analog Common
(With Respect
to Pos. Supply)
TC7106A ONLY Pk – Pk
Segment Drive Voltage (Note 5)
TC7106A ONLY Pk – Pk
Backplane Drive Voltage (Note 5)
TC7107A ONLY
Segment Sinking Current (Except Pin 19)
TC7107A ONLY
Segment Sinking Current (Pin 19)
1
Test Conditions
25kΩ Between Common
and Pos. Supply
25kΩ Between Common
and Pos. Supply
0°C
≤
T
A
≤
+70°C
("C", Commercial Temp. Range Devices)
25kΩ Between Common
and Pos. Supply
– 25°C
≤
T
A
≤
85°C
(“I,” Industrial Temp. Range Devices)
V
+
to V
–
= 9V
V
+
to V
–
= 9V
V
+
= 5.0V
Segment Voltage = 3V
V
+
= 5.0V
Segment Voltage = 3V
TC7106/A & TC7107/A
Min
Typ
Max
2.7
3.05
3.35
Unit
V
2
3
4
5
6
7
7106A/7A
7106/7
20
80
50
—
ppm/°C
ppm/°C
—
4
4
5
10
—
5
5
8.0
16
75
6
6
—
—
ppm/°C
V
V
mA
mA
NOTES:
1. Input voltages may exceed the supply voltages provided the input current is limited to
±100µA.
2. Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.
3. Unless otherwise noted, specifications apply to both the TC7106/A and TC7107/A at T
A
= 25°C, f
CLOCK
= 48 kHz. Parts are tested in the
circuit of Figure 1.
4. Refer to “Differential Input” discussion.
5. Backplane drive is in phase with segment drive for “OFF” segment, 180° out of phase for “ON” segment. Frequency is 20 times
conversion rate. Average DC component is less than 50mV.
8
TELCOM SEMICONDUCTOR, INC.
3-185
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
