3-1/2 DIGIT A/D CONVERTERS
TC7106
TC7106A
TC7107
1
2
3
4
5
6
7
8
TC7107A
ELECTRICAL CHARACTERISTICS (Cont.) (Note 3)
TC7106/A & TC7107/A
Parameters
Test Conditions
Min
Typ
Max
Unit
Analog Common Voltage
25kΩ Between Common
2.7
3.05
3.35
V
(With Respect to Pos. Supply)
and Pos. Supply
Temp. Coeff. of
Analog Common
(With Respect
to Pos. Supply)
25kΩ Between Common
and Pos. Supply
0°C ≤ TA ≤ +70°C
7106A/7A
7106/7
20
80
50
—
ppm/°C
ppm/°C
("C", Commercial Temp. Range Devices)
Temp. Coeff. of
Analog Common
(With Respect
to Pos. Supply)
25kΩ Between Common
and Pos. Supply
– 25°C ≤ TA ≤ 85°C
—
4
—
5
75
6
ppm/°C
V
(“I,” Industrial Temp. Range Devices)
TC7106A ONLY Pk – Pk
V+ to V– = 9V
Segment Drive Voltage (Note 5)
TC7106A ONLY Pk – Pk
V+ to V– = 9V
4
5
6
V
Backplane Drive Voltage (Note 5)
TC7107A ONLY
V+ = 5.0V
5
8.0
16
—
—
mA
mA
Segment Sinking Current (Except Pin 19)
Segment Voltage = 3V
TC7107A ONLY
V+ = 5.0V
10
Segment Sinking Current (Pin 19)
Segment Voltage = 3V
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 TA = 25°C, fCLOCK = 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.
TELCOM SEMICONDUCTOR, INC.
3-185
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
