LOG101

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比例因子为 1V/十倍频的精密对数和对数比放大器

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数据表

document-pdfAcrobat LOG101: Precision Logarithmic and Log Ratio Amplifier 数据表 (Rev. B) (英语)

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LOG200

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具有光电二极管偏置和暗电流校正功能的高速精密对数放大器 Upgraded performance and with integrated features. Smaller QFN package option.

LOG101

正在供货

数据表

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产品详情

Scale factor (V/decade)

1

Input current range (min) (nA)

100

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)

1.5

Dynamic range (typ) (dB)

150

Reference type

External

Auxiliary op amps

0

Full-scale output voltage (min) (±V)

1.2

Full-scale output voltage (max) (±V)

1.5

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)

1

Input current range (min) (nA)

100

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)

1.5

Dynamic range (typ) (dB)

150

Reference type

External

Auxiliary op amps

0

Full-scale output voltage (min) (±V)

1.2

Full-scale output voltage (max) (±V)

1.5

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 (D)

8

29.4 mm² 4.9 x 6

EASY-TO-USE COMPLETE CORE FUNCTION
HIGH ACCURACY: 0.01% FSO Over 5 Decades
WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
LOW QUIESCENT CURRENT: 1mA
WIDE SUPPLY RANGE: ±4.5V to ±18V
APPLICATIONS
- LOG, LOG RATIO, ANTI-LOG COMPUTATION:
  Communication, Analytical, Medical, Industrial, Test, and General Instrumentation
- PHOTODIODE SIGNAL COMPRESSION AMPS
- ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D)CONVERTERS

Note: Protected under US Patent #6,667,650; other patents pending.

EASY-TO-USE COMPLETE CORE FUNCTION
HIGH ACCURACY: 0.01% FSO Over 5 Decades
WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
LOW QUIESCENT CURRENT: 1mA
WIDE SUPPLY RANGE: ±4.5V to ±18V
APPLICATIONS
- LOG, LOG RATIO, ANTI-LOG COMPUTATION:
  Communication, Analytical, Medical, Industrial, Test, and General Instrumentation
- PHOTODIODE SIGNAL COMPRESSION AMPS
- ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D)CONVERTERS

Note: Protected under US Patent #6,667,650; other patents pending.

The LOG101 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.

The LOG101 is tested over a wide dynamic range of input signals. In log ratio applications, a signal current can come from a photodiode, and a reference current from a resistor in series with a precision external reference.

The output signal at V_OUT is trimmed to 1V per decade of input current allowing seven decades of input current dynamic range.

Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range. The LOG101 is specified over the temperature range –5°C to +75°C, with operation over –40°C to +85°C.

The LOG101 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.

The LOG101 is tested over a wide dynamic range of input signals. In log ratio applications, a signal current can come from a photodiode, and a reference current from a resistor in series with a precision external reference.

The output signal at V_OUT is trimmed to 1V per decade of input current allowing seven decades of input current dynamic range.

Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range. The LOG101 is specified over the temperature range –5°C to +75°C, with operation over –40°C to +85°C.

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