TC820CPL datasheet(3/22 Pages) TELCOM

3 / 22 page

3-151

TELCOM SEMICONDUCTOR, INC.

ELECTRICAL CHARACTERISTICS: VS = 9V, TA = 25°C, unless otherwise specified.

Symbol

Parameter

Test Conditions

Min

Typ

Max

Units

Zero Input Reading

VIN = 0V

– 000

±000

+000

Digital

Full Scale = 400 mV

Reading

Roll-Over Error

VIN = ±390mV

– 1

±0.2

Counts

Full-Scale = 400mV

Nonlinearity (Maximum

Full-Scale = 400mV

– 1

±0.2

Count

Deviation From Best

Straight Line Fit)

Ratiometric Reading

VIN = VREF, TC820

1999

1999/2000

2000

Digital

CMRR

Common-Mode Rejection

VCM = ±1V, VIN = 0V

—

µV/V

Ratio

Full-Scale = 400mV

(VFS = 200 mV)

VCMR

Common-Mode Voltage

Input High, Input Low

VSS + 1.5

—

VDD– 1

Range

Noise (P-P Value Not

VIN = 0V

—

µV

Exceeded 95% of Time)

Full-Scale = 400mV

IIN

Input Leakage Current

VIN = 0V

TA = 25°C—

°C ≤ TA ≤ +70°C—

—

– 40

°C ≤ TA ≤ +85°C

—

100

—

VCOM

Analog Common Voltage

25 k

Ω Between Common and VDD

(VSS – VCOM)

3.15

3.3

3.45

VCTC

Common Voltage

25 k

Ω Between Common and VDD

Temperature Coefficient

°C ≤ TA ≤ +70°C

—

ppm/

°C

– 40

°C ≤ TA ≤ +85°C—

—

TCZS

Zero Reading Drift

VIN = 0V

°C ≤ TA ≤ +70°C

—

0.2

—

µV/°C

– 40

°C ≤ TA ≤ +85°C1

TCFS

Scale Factor

VIN = 399mV

Temperature Coefficient

°C ≤ TA ≤ +70°C

—

ppm/

°C

– 40

°C ≤ TA ≤ +85°C—

—

Ext Ref = 0 ppm/

°C

Supply Current

VIN = 0V

—

1.5

Peak-to-Peak Backplane

VS = 9V

4.25

4.7

5.3

Drive Voltage

VDISP = DGND

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage (VDD to GND) .....................................15V

Analog Input Voltage (Either Input) (Note 1) .... VDD to VSS

Reference Input Voltage (Either Input) ............. VDD to VSS

Digital Inputs ............................................... VDD to DGND

VDISP ............................................. VDD to (DGND – 0.3V)

Package Power Dissipation (TA ≤ 70°C) (Note 2)

40-Pin Plastic DIP ............................................. 1.23W

44-Pin PLCC ..................................................... 1.23W

44-Pin Plastic Flat Package .............................. 1.00W

Operating Temperature Range

"C" Devices ............................................ 0

°C to +70°C

"E" Devices ....................................... – 40

°C to +85°C

Storage Temperature Range ................ – 65

°C to +150°C

Lead Temperature (Soldering, 10 sec) ................... 300

°C

*Static-sensitive devices. Unused devices should be stored in conductive

material to protect against static discharge and static fields. Stresses above

those listed under Absolute Maximum Ratings may cause permanent

damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions above those

indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods may

affect device reliability.

NOTES: 1. Input voltages may exceed the supply voltages provided that

input current is limited to

±100µA. Current above this value

may result in invalid display readings but will not destroy the

device if limited to

±1mA.

2. Dissipation ratings assume device is mounted with all leads

soldered to printed circuit board.

TC820

3-3/4 DIGIT A/D CONVERTER WITH

FREQUENCY AND LOGIC PROBE

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