TC7116(2002) View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC7116
(Rev.:2002)

3-1/2 Digit Analog-to-Digital Converters with Hold

Microchip Technology 

TC7116/A/TC7117/A

TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise noted, specifications apply to both the TC7116/A and TC7117/A at TA = 25°C,

fCLOCK = 48kHz. Parts are tested in the circuit of the Typical Operating Circuit.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

TCSF Scale Factor Temperature Coefficient

—

1

5

ppm/°C VIN = 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

—

kΩ (Note 5)

VIL, Pin 1

—

VIL, Pin 1

VIH, Pin 1

—

V+ - 1.5

IDD

Supply Current (Does not Include LED

—

Current for TC7117/A)

—

Test + 1.5

V TC7116/A Only

— GND + 1.5 V TC7117/A Only

—

—

V Both

0.8

1.8

mA VIN = 0V

VC

Analog Common Voltage

(with Respect to Positive Supply)

2.4

3.05

3.35

V 25kΩ Between Common

and Positive Supply

VCTC

Temperature Coefficient of Analog

Common (with Respect to Positive

Supply)

—

—

—

— “C” Device: 0°C to +70°C

20

50

ppm/°C TC7116A/TC7117A

80

—

ppm/°C TC7116/TC7117

VSD

TC7116/TC7117A ONLY Peak to Peak

4

Segment Drive Voltage

5

6

V V+ to V- = 9V

(Note 4)

VBD

TC7116A/TC7116A ONLY Peak to Peak

4

Backplane Drive Voltage

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

10

Segment Sinking Current (Pin 19 Only)

16

—

mA V+ = 5.0V

Segment Voltage = 3V

Note 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: 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.

© 2002 Microchip Technology Inc.

DS21457B-page 5

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