Datasheet
2002-2012 Microchip Technology Inc. DS21457D-page 5
TC7116/A/TC7117/A
TC
SF
Scale Factor Temperature Coefficient — 1 5 ppm/°C V
IN
= 199mV,
“C” Device = 0°C to +70°C
(Ext. Ref = 0ppm°C)
— — 20 ppm/°C “I” Device = -25°C to +85°C
Input Resistance, Pin 1 30 70 — k (Note 5)
V
IL,
Pin 1 — — Test + 1.5 V TC7116/A Only
V
IL,
Pin 1 — — GND + 1.5 V TC7117/A Only
V
IH,
Pin 1 V
+
- 1.5 — — V Both
I
DD
Supply Current (Does not Include LED
Current for TC7117/A)
—0.81.8mAV
IN
= 0V
V
C
Analog Common Voltage
(with Respect to Positive Supply)
2.4 3.05 3.35 V 25k Between Common
and Positive Supply
V
CTC
Temperature Coefficient of Analog
Common (with Respect to Positive
Supply)
——
20
80
—
50
—
—
ppm/°C
ppm/°C
“C” Device: 0°C to+70°C
TC7116A/TC7117A
TC7116/TC7117
V
SD
TC7116/TC7117A ONLY Peak to Peak
Segment Drive Voltage
4 5 6 V V+ to V- = 9V
(Note 4)
V
BD
TC7116A/TC7116A ONLY Peak to
Peak
Backplane Drive Voltage
4 5 6 V V+ to V- = 9V
(Note 4)
TC7117/TC7117A ONLY
Segment Sinking Current
(Except Pin 19)
5 8 — mA V+ = 5.0V
Segment Voltage = 3V
TC7117/TC7117A ONLY
Segment Sinking Current (Pin 19 Only)
10 16 — mA V+ = 5.0V
Segment Voltage = 3V
TABLE 1-1: TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Unless otherwise noted, specifications apply to both the TC7116/A and TC7117/A at T
A
= 25°C,
f
CLOCK
= 48kHz. Parts are tested in the circuit of the Typical Operating Circuit.
Symbol Parameter Min Typ Max Unit Test Conditions
Note 1: Input voltages may exceed the supply voltages provided the input current is limited to ±100A.
2: Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.
3: Refer to “Differential Input” discussion.
4: 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.
5: 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.