LT1678/LT1679

7

sn16789 16789fs

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the device may be impaired.

Note 2: The inputs are protected by back-to-back diodes. Current limiting

resistors are not used in order to achieve low noise. If differential input

voltage exceeds ±1.4V, the input current should be limited to 25mA. If the

common mode range exceeds either rail, the input current should be

limited to 10mA.

Note 3: A heat sink may be required to keep the junction temperature

below absolute maximum.

Note 4: The LT1678C/LT1679C and LT1678I/LT1679I are guaranteed

functional over the Operating Temperature Range of – 40°C to 85°C.

Note 5: The LT1678C/LT1679C are guaranteed to meet specified

performance from 0°C to 70°C. The LT1678C/LT1679C are designed,

characterized and expected to meet specified performance from – 40°C to

85°C but is not tested or QA sampled at these temperatures. The LT1678I/

LT1679I are guaranteed to meet specified performance from – 40°C to

85°C.

Note 6: Typical parameters are defined as the 60% yield of parameter

distributions of individual amplifier; i.e., out of 100 LT1678/LT1679s,

typically 60 op amps will be better than the indicated specification.

Note 7: See the test circuit and frequency response curve for 0.1Hz to10Hz

tester in the Applications Information section.

Note 8: Noise is 100% tested at ±15V supplies.

measured at ±5V.

Note 10: This parameter is not 100% tested.

Note 14: ∆CMRR and ∆PSRR are defined as follows:

1. CMRR and PSRR are measured in µV/V on the individual amplifiers.

2. The difference is calculated between the matching sides in µV/V.

3. The result is converted to dB.

Note 15: Matching parameters are the difference between amplifiers A and

B on the LT1678 and between amplifiers A and D and B and C in the

LT1679.

Note 16: Input range guaranteed by the common mode rejection ratio test.

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

FREQUENCY (Hz)

0.1

1

10

100

10

1000

16789 G01

1

100

16789 G02

16789 G03

TIME (sec)

468

10

02

TIME (sec)

40

60

80

100

020

Voltage Noise vs Frequency

0.1Hz to 10Hz Voltage Noise

0.01Hz to 1Hz Voltage Noise