TC7106AR(2002) 데이터 시트보기 (PDF) - Microchip Technology

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TC7106AR
(Rev.:2002)

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

Microchip Technology 

TC7106/A/TC7107/A

TC7106/A AND TC7107/A ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise noted, specifications apply to both the TC7106/A and TC7107/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

CMRR Common Mode Rejection Ratio (Note 3)

—

50

—

µV/V VCM = ±1V, VIN = 0V,

Full Scale = 200.0mV

eN

Noise (Peak to Peak Value not Exceeded

—

15

—

µV VIN = 0V

95% of Time)

Full Scale - 200.0mV

IL

Leakage Current at Input

Zero Reading Drift

—

1

10

pA VIN = 0V

—

0.2

1

µV/°C VIN = 0V

“C” Device = 0°C to +70°C

—

1.0

2

µV/°C VIN = 0V

“I” Device = -25°C to +85°C

TCSF Scale Factor Temperature Coefficient

—

1

5

ppm/°C VIN = 199.0mV,

“C” Device = 0°C to +70°C

(Ext. Ref = 0ppm°C)

—

—

20 ppm/°C VIN = 199.0mV

“I” Device = -25°C to +85°C

IDD

Supply Current (Does not include LED

Current For TC7107/A)

—

0.8

1.8

mA VIN = 0.8

VC

Analog Common Voltage

(with Respect to Positive Supply)

2.7

3.05

3.35

V 25kΩ Between Common and

Positive Supply

VCTC Temperature Coefficient of Analog

—

—

—

— 25kΩ Between Common and

Common (with Respect to Positive Supply)

Positive Supply

7106/7/A 20

7106/7

80

50

ppm/°C 0°C ≤ TA ≤ +70°C

—

ppm/°C (“C” Commercial Temperature

Range Devices)

VCTC Temperature Coefficient of Analog

—

—

75

ppm/°C 0°C ≤ TA ≤ +70°C

Common (with Respect to Positive Supply)

(“I” Industrial Temperature

Range Devices)

VSD

TC7106A ONLY Peak to Peak

Segment Drive Voltage

4

5

6

V V+ to V- = 9V

(Note 4)

VBD

TC7106A ONLY Peak to Peak

Backplane Drive Voltage

4

5

6

V V+ to V- = 9V

(Note 4)

TC7107A ONLY

5

Segment Sinking Current (Except Pin 19)

8.0

—

mA V+ = 5.0V

Segment Voltage = 3V

TC7107A ONLY

Segment Sinking Current (Pin 19)

10

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.

© 2002 Microchip Technology Inc.

DS21455B-page 5

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