3-1/2 DIGIT ANALOG-TO-DIGITAL
CONVERTERS WITH HOLD
1 TC7116
TC7116A
TC7117
TC7117A
ELECTRICAL CHARACTERISTICS (Cont.)
Parameter
Temperature Coefficient of Analog Common
Test Conditions
"I" Device: –25°C to +85°C
Min
Typ
Max Unit
2
—
—
75
ppm/°C
(With Respect to Positive Supply)
25 kΩ Between Common and
Positive Supply (TC7116A/TC7117A)
TC7116/TC7116A ONLY Peak-to-Peak
V+ to V– = 9V
4
5
6
V
Segment Drive Voltage
(Note 5)
TC7116/TC7116A ONLY Peak-to-Peak
V+ to V– = 9V
4
5
6
V
Backplane Drive Voltage
TC7117/TC7117A ONLY Segment
Sinking Current (Except Pin 19)
(Note 5)
V+ = 5V
Segment Voltage = 3V
5
8
—
mA
3
TC7117/TC7117A ONLY Segment
V+ = 5V
10
16
—
mA
Sinking Current (Pin 19 Only)
Segment Voltage = 3V
NOTES: 1. Input voltages may exceed supply voltages, provided input current is limited to ±100 µA.
2. Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.
3. Unless otherwise noted, specifications apply at TA = +25°C, fCLOCK = 48 kHz. TC7116/TC7116A and TC7117/TC7117A 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 50 mV.
6. The TC7116/TC7116A logic inputs have an internal pull-down resistor connected from HLDR, pin 1 to TEST, pin 37.
The TC7117/TC7117A logic inputs have an internal pull-down resistor connected from HLDR, pin 1 to GND, pin 21.
4
5
6
7
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8
3-205