TC7135CPI View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC7135CPI

4-1/2 digit A/D converter

Microchip Technology 

TC7135

1.0 ELECTRICAL SPECIFICATIONS

Absolute Maximum Ratings†

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

Package Power Dissipation; (TA ≤ 70°C)

28-Pin PDIP .......................................................... 1.14Ω

28-Pin PLCC ......................................................... 1.00Ω

44-Pin MQFP..........................................................................

64-Pin MQFP ........................................................ 1.14Ω

† Notice: Stresses above those listed under "Absolute Maxi-

mum 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 operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, TA = +25°C, FCLOCK = 120 kHz, V+ = +5V, V- = -5V.

(see Functional Block Diagram).

Parameters

Sym

Min.

Typ.

Max.

Units

Conditions

Analog

Display Reading with Zero Volt

Input

-0.0000 ±0.0000 +0.0000 Display Reading Note 2, Note 3

Zero Reading Temperature

Coefficient

TCZ

—

0.5

2

µV/°C

VIN = 0V, (Note 4)

Full Scale Temperature

Coefficient

TCFS

—

—

5

ppm/°C

VIN = 2V,

(Note 4, Note 5)

Nonlinearity Error

NL

—

0.5

1

Count

Note 6

Differential Linearity Error

DNL

—

0.01

—

LSB

Note 6

Display Reading in Ratiometric

Operation

+0.9996 +0.9999 +1.0000 Display Reading VIN = VREF, (Note 2)

± Full Scale Symmetry Error

(Rollover Error)

±FSE

—

0.5

1

Count

-VIN = +VIN, (Note 7)

Input Leakage Current

Noise

IIN

—

1

10

eN

—

15

—

pA

µVP-P

Note 3

Peak-to-Peak Value not

Exceeded 95% of Time

Digital

Input Low Current

IIL

—

10

100

Input High Current

IIH

—

0.08

10

Output Low Voltage

VOL

—

0.2

0.4

Output High Voltage;

VOH

2.4

4.4

5

B1, B2, B4, B8, D1 –D5

Busy, Polarity, Overrange,

4.9

4.99

5

Underrange, Strobe

µA

VIN = 0V

µA

VIN = +5V

V

IOL = 1.6 mA

V

IOH = 1 mA

V

IOH = 10 µA

Clock Frequency

FCLK

0

200

1200

kHz

Note 8

Note 1: Limit input current to under 100 µA if input voltages exceed supply voltage.

2: Full-scale voltage = 2V

3: VIN = 0V

4: 30°C ≤ TA ≤ +70°C

5: External reference temperature coefficient less than 0.01 ppm/°C.

6: -2V ≤ VIN ≤ +2V. Error of reading from best fit straight line.

7: IVIN| = 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.

 2004 Microchip Technology Inc.

DS21460C-page 3

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