TC7135 datasheet(2/13 Pages) TELCOM

2 / 13 page

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TELCOM SEMICONDUCTOR, INC.

ELECTRICAL CHARACTERISTICS: TA = +25°C, fCLOCK = 120 kHz, V+ = +5V, V– = –5V (Figure 1)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

Analog

Display Reading With

Notes 2 and 3

–0.0000

±0.0000

+0.0000

Display

Zero Volt Input

Reading

TCZ

Zero Reading Temperature

VIN = 0V

—

0.5

µV/°C

Coefficient

Note 4

TCFS

Full-Scale Temperature

VIN = 2V

—

ppm/

°C

Coefficient

Notes 4 and 5

Nonlinearity Error

Note 6

—

0.5

Count

DNL

Differential Linearity Error

Note 6

—

0.01

—

LSB

Display Reading in

VIN = VREF

+0.9996

+0.9999

+1.0000

Display

Ratiometric Operation

Note 2

Reading

±FSE

± Full-Scale Symmetry

–VIN = +VIN

—

0.5

Count

Error (Roll-Over Error)

Note 7

IIN

Input Leakage Current

Note 3

—

Noise

Peak-to-Peak Value Not

—

µVP-P

Exceeded 95% of Time

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 8

120

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

NOTES:

1. Limit input current to under 100

µA if input

voltages exceed supply voltage.

2. Full-scale voltage = 2V.

3. VIN = 0V.

4. 0

°C ≤ TA ≤ +70°C.

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 +160°C

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

°C

Package Power Dissipation (TA ≤ 70°C)

Plastic DIP ........................................................ 1.14W

PLCC ................................................................ 1.00W

Plastic Flat Package ......................................... 1.14W

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

material to protect them 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.

5. External reference temperature coefficient less than 0.01 ppm/

°C.

6. –2V

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

7. |VIN| = 1.9959.

8. Specification related to clock frequency range over which the

TC7135 correctly performs its various functions. Increased errors

result at higher operating frequencies.

TC7135

4-1/2 DIGIT

ANALOG-TO-DIGITAL CONVERTER

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