TC7129 View Datasheet(PDF) - TelCom Semiconductor Inc => Microchip

Part Name

Description

Manufacturer

TC7129

4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS

TelCom Semiconductor Inc => Microchip 

4-1/2 DIGIT ANALOG-TO-DIGITAL

CONVERTER WITH ON-CHIP LCD DRIVERS

TC7129

ABSOLUTE MAXIMUM RATINGS*

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

Reference Voltage (REF HI or REF LO) .............. V+ to V–

Input Voltage (IN HI or IN LO) (Note 1) ................ V+ to V–

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

Digital Input, Pins

1, 2, 19, 20, 21, 22, 27, 37, 39, 40 .......... DGND to V+

Analog Input, Pins 25, 29, 30 ............................... V+ to V–

Package Power Dissipation (TA ≤ 70°C)

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

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

Plastic QFP .......................................................1.00W

Operating Temperature Range .................... 0°C to +70°C

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

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

Notes: Input voltages may exceed supply voltages, provided input current

is limited to ±400 µA. Currents above this value may result in invalid display

readings but will not destroy the device if limited to ±1 mA.

Dissipation ratings assume device is mounted with all leads soldered to

printed circuit board.

*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.

ELECTRICAL CHARACTERISTICS: V+ to V– = 9V, VREF = 1V, TA = +25°C, fCLK = 120 kHz, unless otherwise

indicated. Pin numbers refer to 40-pin DIP.

Symbol Parameter

Test Conditions

Min Typ Max Unit

Input

RE

NL

CMRR

CMVR

eN

IIN

Power

VCOM

DGND

IS

fCLK

Digital

Zero Input Reading

Zero Reading Drift

Ratiometric Reading

Range Change Accuracy

Roll-Over Error

Linearity Error

Common-Mode Rejection Ratio

Common-Mode Voltage Range

Noise (Peak-to-Peak Value Not

Exceeded 95% of Time)

Input Leakage Current

Scale Factor Temperature

Coefficient

Common Voltage

Common Sink Current

Common Source Current

Digital Ground Voltage

Sink Current

Supply Voltage Range

Supply Current Excluding Common Current

Clock Frequency

VDISP Resistance

Low-Battery Flag Activation Voltage

VIN = 0V, 200 mV Scale

VIN = 0V, 0°C < TA < +70°C

VIN = VREF = 1000 mV, Range = 2V

VIN = 0.1V on Low Range

ϬVIN = 1V on High Range

–VIN = +VIN = 199 mV

200 mV Scale

VCM = 1V, VIN = 0V, 200 mV Scale

VIN = 0V

200 mV Scale

VIN = 0V

200 mV Scale

VIN = 0V, Pins 32, 33

VIN = 199 mV, 0°C < TA < +70°C

External VREF = 0 ppm/°C

– 0000 0000

—

±0.5

9997 9999

0.9999 1.0000

+0000 Counts

— µV/°C

10000 Counts

1.0001 Ratio

—

1

2 Counts

—

1

— Counts

—

110

— dB

— (V–) +1.5 — V

— (V+) –1 — V

—

14

— µVP-P

—

1

—

2

10 pA

7 ppm/°C

V+ to Pin 28

∆Common = +0.1V

∆Common = –0.1V

V+ to Pin 36, V+ to V– = 9V

∆DGND = +0.5V

V+ to V–

V+ to V– = 9V

VDISP to V+

V+ to V–

2.8

3.2

—

0.6

—

10

4.5

5.3

—

1.2

6

9

—

0.8

—

120

—

50

6.3

7.2

3.5

V

—

mA

—

µA

5.8

V

—

mA

12

V

1.3 mA

360 kHz

—

kΩ

7.7

V

Continuity Comparator

Threshold Voltages

Pull-Down Current

VOUT Pin 27 = High

VOUT Pin 27 = Low

Pins 37, 38, 39

100 200

—

200

—

2

—

mV

400 mV

10

µA

3-232

TELCOM SEMICONDUCTOR, INC.

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