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Manufacturer / Brand: AD
Details: High Speed, 200 dB Range, Current to Voltage Logarithmic Converter IC
Series: ADL5304
Quantity Available: Over 51920 pieces

Datasheet for ADL5304ACPZ-R2:

ADL5304ACPZ-R2 datasheet
Price for ADL5304ACPZ-R2
Product Parameters
  • Manufacturer Part Number : ADL5304ACPZ-R2
  • Manufacturer : AD
  • Description : High Speed, 200 dB Range, Current to Voltage Logarithmic Converter IC
  • Series : ADL5304
  • Reference Price : USD 0
  • Our Price : We have a better price, contact us by email
  • Product Type : RF Power Detectors
  • Function : Log Detectors
  • Current Suggest : Recommended for New Designs
  • Status : Production
  • ROHS Status : ROHS Compliant (Lead Free)
  • Package Type : 32-Lead LFCSP (5mm x 5mm x 0.85mm w/ EP)
  • Pins : 32
  • MFG Package Case : CP-32-8
  • Part Type : REEL
  • Standard Packing Type : Reel
  • Standard Packing Quantity : 250
  • Working Temperature : -40 to 85C
  • Other Part Number : ADL5304ACPZ-R2
  • Shipping methods : DHL FEDEX UPS TNT
  • Delivery Time : Ship within 1 day.
  • Manufacturer Production time : 6-8 weeks (Normally have stocks)
  • Weight : 0.001KG

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Features and Benefits of ADL5304ACPZ-R2
Product Detailed Description for ADL5304ACPZ-R2

The ADL5304 is a high speed logarithmic converter with fast response and low noise over a 200 dB (1 pA to 10 mA) measurement range. The ADL5304 provides a nominal logarithmic slope of 10 mV/dB (200 mV/decade); other values are easily configured. Logarithmic intercept can be programmed over a wide range with the internal 100 nA current source or externally for log ratio applications.The default intercept value of 3.162 fA places the midpoint of the measurement range of 100 nA at VLOG = 1.5 V.

A single positive supply of 5 V is all that is required for operation over a specified 1 pA to 3 mA input range. Dual-supply operation extends the specified input current range to 10 mA.

The ADL5304 accepts two current inputs to the logarithmic argument. The numerator input, INUM, flows in the collector of an NPN transistor, connected in a feedback path around a low offset JFET amplifier. The denominator current, IDEN, is treated in the same way, which allows for log ratio operation. The input summing nodes (INUM and IDEN) operate at a constant default voltage of 1.5 V. The VSM1 to VSM4 pins flank the INUM and IDEN inputs to provide a guard voltage to minimize leakage currents.

Adaptive photodiode biasing is provided for optical measurements. A monitor current 1.1 times INUM is output at the IMON pin, and an external resistor, RMNTR, at 10 times the photodiode series resistance (RS) applies a voltage across the photodiode that 1st order keeps the internal PD junction at 0 V to minimize dark current.

The VLOG output is buffered and can be rescaled through internal gain setting resistors. The internal ILOG varies from −400 μA to +400 μA as INUM changes over 10 decades from 1 pA to 10 mA. This corresponds to 0.5 V to 2.5 V at the VLOG pin in the default configuration shown in Figure 1.

Accurate 1.5 V (Pin 1P5V) and 2.0 V (Pin 2VLT) reference outputs allow precise repositioning of the intercept using external resistors.

The ADL5304 is available in a 32-lead, 5 mm × 5 mm LFCSP and specified for operation from −40°C to +85°C.

Applications

  • High accuracy optical power measurement
  • Wide range baseband log compression
  • Versatile detector for high speed APC loops
Lifecycle information of ADL5304ACPZ-R2

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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