LT1007, LT1007A, LT1037, LT1037A

LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS

SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993

POST OFFICE BOX 655303

16

TYPICAL CHARACTERISTICS

VCC

± = ± 15 V

AV = – 1

TA = 25°C

8

6

4

2

0

–2

–4

–6

16

14

12

10

8

6

4

2

t – Time –

µs

0

–8

TA = 25°C

CL = 15 pF

AV = 1

VCC

± = ±15 V

80

60

40

20

0

–20

–40

–60

–80

t – Time –

µs

4

3.5

3

2.5

2

1.5

1

0.5

0

LT1007

VOLTAGE-FOLLOWER

SMALL-SIGNAL PULSE RESPONSE

LT1007

VOLTAGE-FOLLOWER

LARGE-SIGNAL PULSE RESPONSE

Figure 33

Figure 34

APPLICATION INFORMATION

general

The LT1007- and LT1037-series devices may be inserted directly into OP-07, OP-27, OP-37, and 5534 sockets

with or without removal of external-compensation or nulling components. In addition, the LT1007 and LT1037

may be fitted to

µA741 sockets by removing or modifying external nulling components.

offset voltage adjustment

The input offset voltage and its change with temperature of the LT1007 and LT1037 are permanently trimmed

potentiometer, as shown in Figure 35, will not degrade drift with temperature. Trimming to a value other than

will be 1

µV/°C).

The adjustment range with a 10-k

Ω potentiometer is approximately ±2.5 mV. If a smaller adjustment range is

needed, the sensitivity and resolution of the nulling can be improved by using a smaller potentiometer in

conjunction with fixed resistors. The example in Figure 36 has an approximate null range of

±200 µV.

offset voltage and drift

Unless proper care is exercised, thermocouple effects at the contacts to the input terminals, caused by

temperature gradients across dissimilar metals, can exceed the inherent temperature coefficient of the amplifier.

Air currents should be minimized, package leads should be short, input leads should be close together, and input

leads should be at the same temperature.