參數(shù)資料
型號(hào): LSP2961
英文描述: Precision Log Ratio Amplifier
中文描述: 精密對(duì)數(shù)比例放大器
文件頁數(shù): 3/6頁
文件大?。?/td> 145K
代理商: LSP2961
Agere Systems Inc.
3
Advance Data Sheet
September 2001
Precision Log Ratio Amplifier
LSP2961
Pin Information
2311(F)
Figure 3. External Connections
Table 1. LSP2961 Pin Description
Pin
Number
1
2
3
Pin Name
Function
Pin Total
Counts
1
1
1
Description
IN
Input
Ground
Input current.
Analog ground.
Used to set reference current with an
external resistor to GND or V
CC
.
–5 V power supply.
5 V power supply.
Output voltage.
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.
Used to null offset voltage by
connecting to the wiper of an external
potentiometer between V
CC
and V
EE
.
GND
I
REF_ADJ
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
4
5
6
7
V
EE
V
CC
1
1
1
1
OUTPUT
SCALE FACTOR
8
V
OS_ADJ
Offset Voltage Adjustment
1
V
OS_ADJ
SCALE
FACTOR
OUTPUT
V
CC
IN
I
REF_ADJ
V
EE
GND
1
3
4
2
8
6
5
7
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