LOG2112

現行

具晶片內建 2.5V 電壓參考的雙路精密對數和對數比放大器

立即訂購

產品規格表

document-pdfAcrobat Precision Logarithmic and Log Ratio Amplifier datasheet (Rev. D) (英文)

LOG2112

現行

產品規格表

立即訂購

產品詳細資料

Scale factor (V/decade)

0.5

Input current range (min) (nA)

0.1

Input current range (max) (mA)

3.5

Offset voltage (input amplifiers) (max) (mV)

1.5

Vs (±) (min) (V)

4.5

Vs (±) (max) (V)

18

Iq (max) (mA)

3.5

Dynamic range (typ) (dB)

150

Reference type

Internal

Auxiliary op amps

1

Full-scale output voltage (min) (±V)

-3.8

Full-scale output voltage (max) (±V)

3.5

Conformity error (initial 5 decades) (max) (%)

0.2

Conformity error (initial 5 decades) (typ. over temp) (%/°C)

0.0001

Operating temperature range (°C)

-40 to 85

Specified voltage (±V)

5

Rating

Catalog

Scale factor (V/decade)

0.5

Input current range (min) (nA)

0.1

Input current range (max) (mA)

3.5

Offset voltage (input amplifiers) (max) (mV)

1.5

Vs (±) (min) (V)

4.5

Vs (±) (max) (V)

18

Iq (max) (mA)

3.5

Dynamic range (typ) (dB)

150

Reference type

Internal

Auxiliary op amps

1

Full-scale output voltage (min) (±V)

-3.8

Full-scale output voltage (max) (±V)

3.5

Conformity error (initial 5 decades) (max) (%)

0.2

Conformity error (initial 5 decades) (typ. over temp) (%/°C)

0.0001

Operating temperature range (°C)

-40 to 85

Specified voltage (±V)

5

Rating

Catalog

SOIC (DW)

16

106.09 mm² 10.3 x 10.3

EASY-TO-USE COMPLETE FUNCTION
OUTPUT SCALING AMPLIFIER
ON-CHIP 2.5V VOLTAGE REFERENCE
HIGH ACCURACY: 0.2% FSO Over 5 Decades
WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
LOW QUIESCENT CURRENT: 1.75mA
WIDE SUPPLY RANGE: ±4.5V to ±18V
PACKAGES: SO-14 (narrow) and SO-16
APPLICATIONS
- LOG, LOG RATIO:
  Communication, Analytical, Medical, Industrial, Test, General Instrumentation
- PHOTODIODE SIGNAL COMPRESSION AMP
- ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTER
- ABSORBANCE MEASUREMENT
- OPTICAL DENSITY MEASUREMENT

All trademarks are the property of their respective owners.

EASY-TO-USE COMPLETE FUNCTION
OUTPUT SCALING AMPLIFIER
ON-CHIP 2.5V VOLTAGE REFERENCE
HIGH ACCURACY: 0.2% FSO Over 5 Decades
WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
LOW QUIESCENT CURRENT: 1.75mA
WIDE SUPPLY RANGE: ±4.5V to ±18V
PACKAGES: SO-14 (narrow) and SO-16
APPLICATIONS
- LOG, LOG RATIO:
  Communication, Analytical, Medical, Industrial, Test, General Instrumentation
- PHOTODIODE SIGNAL COMPRESSION AMP
- ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTER
- ABSORBANCE MEASUREMENT
- OPTICAL DENSITY MEASUREMENT

All trademarks are the property of their respective owners.

The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. V_LOGOUT of the LOG112 and LOG2112 are trimmed to 0.5V per decade of input current, ensuring high precision over a wide dynamic range of input signals.

The LOG112 and LOG2112 features a 2.5V voltage reference that may be used to generate a precision current reference using an external resistor.

Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over the specified temperature range of –5°C to +75°C.

The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. V_LOGOUT of the LOG112 and LOG2112 are trimmed to 0.5V per decade of input current, ensuring high precision over a wide dynamic range of input signals.

The LOG112 and LOG2112 features a 2.5V voltage reference that may be used to generate a precision current reference using an external resistor.

Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over the specified temperature range of –5°C to +75°C.

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