LT1122

5

1122fb

ELECTRICAL CHARACTERISTICS

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LT1122 is measured in an automated tester in less than one

second after application of power. Depending on the package used, power

dissipation, heat sinking, and air flow conditions, the fully warmed up chip

temperature can be 10°C to 50°C higher than the ambient temperature.

Note 3: Settling time is 100% tested for A- and C-grades using the settling

time test circuit shown. This test is not included in quality assurance

sample testing.

Note 4: Input voltage range functionality is assured by testing offset

voltage at the input voltage range limits to a maximum of 4mV

(A, B grades), to 5.7mV (C, D grades).

Note 5: Minimum supply voltage is tested by measuring offset voltage to

7mV maximum at ±5V supplies.

Note 6: The LT1122 is not tested and not quality-assurance-sampled

at –40°C and at 85°C. These specifications are guaranteed by design,

correlation and/or inference from –55°C, 0°C, 25°C, 70°C and/or 125°C

tests.

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

15V

1µF TANT

0.1µF

1µF TANT

0.1µF

TYPICAL SUPPLY

BYPASSING FOR

EACH AMP/BUFFER

–10V

(REGULATED)

1

2

TTL

IN

4

5

74LS00

GROUND ALL

OTHER INPUTS

10V

(REGULATED)

6

3

SETTLING

TIME OUTPUT

(20 TIMES SUM

NODE OUTPUT)

1k

NO CONNECTION ON PINS

10, 11, 12, 14, AND 15

1N5712

15V

–15V

1.5k

LT1223

–

+

3

2

4

7

6

8

1

7

2

5

4

1N5712

SUMMING

NODE

OUTPUT

–15V

15V

*THIS RESISTOR CAN BE ADJUSTED TO

NULL OUT ALL OFFSETS AT THE SETTLING

TIME OUTPUT. THE AUTOMATED TESTER

USES A SEPARATE AUTOZERO CIRCUIT.

–15V

(MEASURE INPUT

PULSE HERE)

5.1k

1%

4

–15V

3

2

7

6

LT1122

2k

1%

15V

2k

1%

DEVICE UNDER TEST

5pF

15V

7

1

5

2

8

51

51

51

51

+

–

HA5002

79

5.1k*

1%

HA5002

4

LTC201A

LT1122•TA02

–15V

+

Settling Time Test Fixture