LSP2961 查看數據表（PDF） - Agere -> LSI Corporation

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LSP2961

Precision Log Ratio Amplifier

Agere -> LSI Corporation 

Advance Data Sheet

September 2001

Pin Information

LSP2961

Precision Log Ratio Amplifier

IN 1

GND 2

IREF_ADJ

3

VEE

4

8

VOS_ADJ

7

SCALE

FACTOR

6 OUTPUT

5

VCC

Figure 3. External Connections

2311(F)

Table 1. LSP2961 Pin Description

Pin

Number

1

2

3

4

5

6

7

8

Pin Name

IN

GND

IREF_ADJ

VEE

VCC

OUTPUT

SCALE FACTOR

VOS_ADJ

Function

Input

Ground

Sets the Reference Current to

Other than 1 µA

Power Supply

Power Supply

Output Voltage

Sets the Scale Factor to Other

than 1 V/decade

Offset Voltage Adjustment

Pin Total

Counts

Description

1 Input current.

1 Analog ground.

1 Used to set reference current with an

external resistor to GND or VCC.

1 –5 V power supply.

1 5 V power supply.

1 Output voltage.

1 Used to change the scale factor to

other than 1 V/decade (either less than

or greater than) with an external

resistor connecting to the OUTPUT pin

or GND.

1 Used to null offset voltage by

connecting to the wiper of an external

potentiometer between VCC and VEE.

Agere Systems Inc.

3

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