TC7117 TelCom, TC7117 Datasheet - Page 3

• Manufacturer Part Number: TC7117
• Description: 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS WITH HOLD
• Manufacturer: TelCom

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