Data Sheet

AD797

Rev. K | Page 5 of 19

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter

Ratings

Supply Voltage

±18 V

Input Voltage

±VS

Differential Input Voltage1

±0.7 V

Output Short-Circuit Duration

Indefinite within

maximum internal

power dissipation

Storage Temperature Range

(N, R Suffix)

−65°C to +125°C

Operating Temperature Range

−40°C to +85°C

Lead Temperature (Soldering 60 sec)

300°C

1 The AD797 inputs are protected by back-to-back diodes. To achieve low

noise, internal current-limiting resistors are not incorporated into the design

of this amplifier. If the differential input voltage exceeds ±0.7 V, the input

current should be limited to less than 25 mA by series protection resistors.

Note, however, that this degrades the low noise performance of the device.

Stresses at or above those listed under Absolute Maximum

Ratings may cause permanent damage to the product. This is a

stress rating only; functional operation of the product at these

or any other conditions above those indicated in the operational

section of this specification is not implied. Operation beyond

the maximum operating conditions for extended periods may

affect product reliability.

PIN CONFIGURATION

AD797

TOP VIEW

OFFSET NULL 1

–IN 2

+IN 3

–VS 4

DECOMPENSATION

AND DISTORTION

NEUTRALIZATION

+VS

OUTPUT

OFFSET NULL

8

7

6

5

Figure 2. 8-Lead Plastic Dual In-Line Package [PDIP] and

8-Lead Standard Small Outline Package [SOIC]

THERMAL RESISTANCE

θJA is specified for the device soldered on a 4-layer JEDEC

standard printed circuit board (PCB) with zero airflow for the

SOIC package, and a 2-layer JEDEC standard printed circuit

board (PCB) with zero airflow for the PDIP package.

Table 4. Thermal Resistance

Package Type

θJA

θJC

Unit

8-Lead SOIC (R-8)

120

43

°C/W

8-Lead PDIP (N-8)

103

50

°C/W

ESD CAUTION