TC7136 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

TC7136

Low Power 3-1/2 Digit Analog-to-Digital Converter

Microchip Technology 

TC7136/TC7136A

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage (V+ to V-)....................................... 15V

Analog Input Voltage (Either Input) (Note 1)... V+ to V-

Reference Input Voltage (Either Input)............ V+ to V-

Clock Input .................................................TEST to V+

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

Plastic DIP ................................................... 1.23W

Plastic Quad Flat Package .......................... 1.00W

PLCC ........................................................... 1.23W

Operating Temperature Range:

C Devices.......................................... 0°C to +70°C

I Devices ........................................ -25°C to +85°C

Storage Temperature Range.............. -65°C to +150°C

*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

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC7136 AND TC7136A ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VS = 9V, fCLK = 16kHz, and TA = +25°C, unless otherwise noted.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Input

Zero Input Reading

-000.0

±000.0 +000.0 Digital VIN = 0V, Full Scale = 200mV

Reading

Zero Reading Drift

Ratiometric Reading

—

0.2

1

μV/°C VIN = 0V, 0°C ≤ TA ≤ +70°C

999 999/1000 1000 Digital VIN = VREF, VREF = 100mV

Reading

NL

Non-Linearity Error

—

1

±0.2 Count Full Scale = 20mV or 2V Max.

Deviation from best Straight Line

ER

Rollover Error

-1

eN

Noise

—

IL

Input Leakage Current

—

CMRR Common Mode Rejection Ratio

—

TCSF Scale Factor Temperature

—

Coefficient

-1

±0.2 1 Count VIN- = VIN+ ≈ 200mV

15

—

μVP-P VIN = 0V, Full Scale = 200mV

1

10

pA VIN = 0V

50

—

μV/V VCM = ±1V, VIN = 0V, Full Scale = 200mV

1

5

ppm/°C VIN = 199mV, 0°C ≤ TA ≤ +70°C

Ext. Ref. Temp. Coeff. = 0ppm/°C

Note 1: Input voltages may exceed supply voltages when input current is limited to 100μA.

2: Dissipation rating assumes device is mounted with all leads soldered to PC board.

3: Refer to "Differential Input" discussion.

4: Backplane drive is in phase with segment drive for "OFF" segment and 180° out-of-phase for "ON" segment. Frequency

is 20 times conversion rate. Average DC component is less than 50mV.

5: See "Typical Application".

6: A 48kHz oscillator increases current by 20μA (typical). Common current not included.

© 2005 Microchip Technology Inc.

DS21461C-page 5

Share Link: