TL441CN
ActiveLOGARITHMIC AMPLIFIER WITH SCALE FACTOR OF 8 MV/DECADE
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TL441CN
ActiveLOGARITHMIC AMPLIFIER WITH SCALE FACTOR OF 8 MV/DECADE
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Technical Specifications
Parameters and characteristics for this part
| Specification | TL441CN |
|---|---|
| Amplifier Type | Logarithmic |
| Current - Output / Channel | 30 mA |
| Current - Supply | 18.5 mA |
| Mounting Type | Through Hole |
| Number of Circuits | 1 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 0.3 in |
| Package / Case | 16-DIP |
| Package / Case | 7.62 mm |
| Supplier Device Package | 16-PDIP |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 6.28 | |
| 10 | $ 5.68 | |||
| 25 | $ 5.41 | |||
| 100 | $ 4.70 | |||
| 250 | $ 4.49 | |||
| 500 | $ 4.09 | |||
| 1000 | $ 3.56 | |||
| 2500 | $ 3.43 | |||
| Texas Instruments | TUBE | 1 | $ 5.53 | |
| 100 | $ 4.51 | |||
| 250 | $ 3.54 | |||
| 1000 | $ 3.01 | |||
Description
General part information
TL441-EP Series
This amplifier circuit contains four 30-dB logarithmic stages. Gain in each stage is such that the output of each stage is proportional to the logarithm of the input voltage over the 30-dB input voltage range. Each half of the circuit contains two of these 30-dB stages summed together in one differential output that is proportional to the sum of the logarithms of the input voltages of the two stages. The four stages may be interconnected to obtain a theoretical input voltage range of 120-dB. In practice, this permits the input voltage range typically to be greater than 80-dB with log linearity of ±0.5-dB (see application data). Bandwidth is from dc to 40 MHz.
This circuit is useful in data compression and analog compensation. This logarithmic amplifier is used in log IF circuitry as well as video and log amplifiers.
The TL441M is characterized for operation over the full military temperature range of –55°C to 125°C.
Documents
Technical documentation and resources
