3-33

Absolute Maximum Ratings

Thermal Information

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V

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

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

Digital Input Pins

1, 2, 19, 20, 21, 22, 27, 37, 38, 39, 40 . . . . . . . . . . . . . DGND to V+

Thermal Resistance (Typical, Note 2)

θ

PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50

MQFP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

80

(MQFP - Lead Tips Only)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation

of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

1. Input voltages may exceed the supply voltages provided that input current is limited to 1400mA. Currents above this value may result in

valid display readings but will not destroy the device if limited to

±1mA.

2.

Electrical Specifications

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Zero Input Reading

-0000

0000

+0000

Counts

Zero Reading Drift

±0.5

-

Ratiometric Reading

9996

9999

10000

Counts

Range Change Accuracy

Range

0.9999

1.0000

1.0001

Ratio

Rollover Error

-

1.5

3.0

Counts

Linearity Error

200mV Scale

-

1.0

-

Counts

Input Common-Mode Rejection Ratio

-

110

-

dB

Input Common-Mode Voltage Range

-

(V-) +1.5

(V+) -1.0

-V

-

14

-

µV

Input Leakage Current

-

1

10

pA

Scale Factor Tempco

-

2

7

COMMON Voltage

V+ to Pin 28

2.8

3.2

3.5

V

COMMON Sink Current

∆Common = + 0.1V

-

0.6

-

mA

COMMON Source Current

∆Common = -0.1V

-

10

-

µA

DGND VoItage

V+ to Pin 36, V+ to V- = 9V

4.5

5.3

5.8

V

DGND Sink Current

∆DGND = +0.5V

-

1.2

-

mA

Supply Voltage Range

V+ to V- (Note 3)

6

9

12

V

Supply Current Excluding COMMON Current

V+ to V- = 9V

-

1.0

1.5

mA

Clock Frequency

(Note 3)

-

120

360

kHz

-

50

-

k

Ω

Low Battery Flag Activation Voltage

V+ to V-

6.3

7.2

7.7

V

CONTINUITY Comparator Threshold Voltages

100

200

-

mV

-

200

400

mV

Pull-Down Current

Pins 37, 38, 39

-

2

10

µA

“Weak Output” Current Sink/Source

Pins 20, 21 Sink/Source

-

3/3

-

µA

Pin 27 Sink/Source

-

3/9

-

µA

Pin 22 Source Current

-40-

µA

Pin 22 Sink Current

-3-

µA

NOTE:

3. Device functionality is guaranteed at the stated Min/Max limits. However, accuracy can degrade under these conditions.

ICL7129