TC835CBU datasheet(2/12 Pages) TELCOM

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TELCOM SEMICONDUCTOR, INC.

PERSONAL COMPUTER

DATA ACQUISITION A/D CONVERTER

TC835

ABSOLUTE MAXIMUM RATINGS* (Note 1)

Positive Supply Voltage ............................................. +6V

Negative Supply Voltage ............................................ - 9V

Analog Input Voltage (Pin 9 or 10) ........ V+ to V– (Note 2)

Reference Input Voltage (Pin 2) .......................... V+ to V–

Clock Input Voltage ............................................. 0V to V+

Operating Temperature Range .................... 0

°C to +70°C

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

°C to +150°C

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

°C

NOTES:

1. Functional operation is not implied.

2. Limit input current to under 100

µA if input voltages exceed supply

voltage.

3. Full-scale voltage = 2V.

4. VIN = 0V.

5. 0

°C ≤ TA ≤ +70°C.

6. External reference temperature coefficient less than 0.01 ppm/

°C.

7. – 2V

≤ VIN ≤ +2V. Error of reading from best fit straight

line.

8. |VIN| = 1.9959.

9. Test circuit shown in Figure 1.

10. Specification related to clock frequency range over which

the TC835 correctly performs its various functions.

Increased errors result at higher operating frequencies.

ELECTRICAL CHARACTERISTICS: TA = +25°C, fCLOCK = 200 kHz, V+ = +5V, V– = – 5V, unless otherwise specified.

Symbol Parameter

Test Conditions

Min

Typ

Max

Unit

Analog

Display Reading With

Notes 3 and 4

–0.0000

±0.0000

+0.0000

Display

Zero Volt Input

Reading

TCZ

Zero Reading

VIN = 0V

—

0.5

µV/°C

Temperature Coefficient

Note 5

TCFS

Full-Scale

VIN = 2V

—

ppm/

°C

Temperature Coefficient

Notes 5 and 6

Nonlinearity Error

Note 7

—

0.5

Count

DNL

Differential Linearity Error

Note 7

—

0.01

—

LSB

Display Reading in

VIN = VREF

+0.9996

+0.9998

+1.0000

Display

Ratiometric Operation

Note 3

Reading

±FSE

± Full-Scale Symmetry

–VIN = +VIN

—

0.5

Count

Error (Roll-Over Error)

Note 8

IIN

Input Leakage Current

Note 4

—

Noise

Peak-to-Peak Value Not Exceeded 95% of Time

—15

—

µVP-P

Digital

IIL

Input Low Current

VIN = 0V

—

100

µA

IIH

Input High Current

VIN = +5V

—

0.08

µA

VOL

Output Low Voltage

IOL = 1.6 mA

—

0.2

0.4

VOH

Output High Voltage

B1, B2, B4, B8, D1–D5

IOH = 1 mA

2.4

4.4

Busy, Polarity, Overrange, IOH = 10 µA

4.9

4.99

Underrange, Strobe

fCLK

Clock Frequency

Note 10

200

1200

kHz

Power Supply

V+

Positive Supply Voltage

V–

Negative Supply Voltage

– 3

– 5

– 8

I+

Positive Supply Current

fCLK = 0 Hz

—

I–

Negative Supply Current

fCLK = 0 Hz

—

0.7

Power Dissipation

fCLK = 0 Hz

—

8.5

Package Power Dissipation (TA ≤ 70°C)

28-Pin Plastic DIP ............................................. 1.14W

44-Pin PQFP .................................................... 1.00W

64-Pin PFP ....................................................... 1.14W

*Static-sensitive device. Unused devices must be stored in conductive

material. Protect devices from static discharge and static fields. Stresses

above those listed under Absolute Maximum Ratings may cause perma-

nent 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.

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