Data Sheets   Rev C, 08/1999 (pdf, 263K) Email PDF      More Data Sheets...    Lead(Pb) - Free Data (Data Sheet Help)     Application Notes Evaluation Boards pdf(374k) Price, Packaging, and Availability

	Product Description
	The AD641 is a 250 MHz, demodulating logarithmic amplifier with an accuracy of ±2.0 dB and 44 dB dynamic range. The AD641 uses a successive detection architecture to provide an output current ...More

Specifications Dynamic Range (dB) 44dB Temp Stability (dB) ±1dB Phase Accuracy (deg) ±2Deg Response Time (ns typ) 10ns Voltage Supply (V) +/- 4.5 to +/- 7.5 Supply Current (max) 44mA Limiter Output Yes AC Linearity (± dB) 2dB Power Consumption (mW) 220mW Package 20-Lead DIP, 20-Lead LCC, 20-Lead PLCC Find Similar Products

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Features Logarithmic Amplifier Performance Usable to 250 MHz 44 dB Dynamic Range ±2.0 dB Log Conformance 37.5 mV/dB Voltage Output Stable Slope and Intercepts 2.0 nV/vHz Input Noise Voltage 50 µV Input Offset Voltage Low Power ±5 V Supply Operation 9 mA (+Vs), 35 mA (-Vs) Quiescent Current Onboard Resistors Onboard 10x Attenuator Dual Polarity Current Outputs Direct Coupled Differential Signal Path

 

Design Tools Impedance Matching Tutorial This tutorial examines the Smith Chart and its application to transmission line impedance matching. Power Dissipation vs Die Temp This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.

 

Price, Packaging, and Availability Print Table AD641 Model Options Model Status Package Pins Temp Range Price* (100-499) Available RoHS Compliant Samples Cart Purchase Cart 5962-9559801MRA Prodn 20 ld CerDIP 20 Mil $256.88 5/23/2008 N Material Declaration Contact ADI Add to Cart AD641AN Prodn 20 ld PDIP 20 Ind $37.51 5/23/2008 N Material Declaration Contact ADI Add to Cart AD641ANZ Prodn 20 ld PDIP 20 Ind $35.88 5/23/2008 Y Material Declaration Contact ADI Add to Cart AD641AP Prodn 20 ld PLCC 20 Ind $37.51 5/23/2008 N Material Declaration Contact ADI Add to Cart AD641AP-REEL7 Prodn 20 ld PLCC 20 Ind $35.88 7/25/2008 N Material Declaration Contact ADI Add to Cart AD641APZ Prodn 20 ld PLCC 20 Ind $35.88 7/25/2008 Y Material Declaration Contact ADI Add to Cart The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. View Sales and Distribution Offices

 

Suggested Complementary Products AD8055: Low Cost, Single, 300 MHz Voltage Feedback Amplifier Signal Chains Visit our interactive signal chains for more complementary products

 

Find Similar Products     Part# RF Frequency (MHz) Dynamic Range (dB) Temp Stability (dB) Response Time (ns typ) Voltage Supply (V) Supply Current (max) Package Price* (1000 pcs.) AD8312 50 to 3500 45 ±0.5 70 2.7 to 5.5 4.2 WLCSP $1.25 AD606 - 80 - 400 4.5 to 5.5 13 16-Lead DIP; 16-Lead SOIC $21.74 AD8313 100 to 2500 70 ±1.25 40 2.7 to 5.5 14 8-Lead uSOIC $7.90 AD641 - 44 ±1 10 +/- 4.5 to +/- 7.5 44 20-Lead DIP; 20-Lead LCC; 20-Lead PLCC $32.43 AD8314 100 to 2700 45 ±1 70 2.7 to 5.5 4.5 8-Lead uSOIC/CSP $1.09 AD8306 5 to 400 100 ±1 73 2.7 to 5.5 16 16-Lead SOP $14.50 AD8315 100 to 2500 50 ±1 150 2.7 to 5.5 8.5 8-Lead uSOIC $3.95 AD8309 5 to 500 100 ±1 67 2.7 to 5.5 16 16-Lead TSSOP $7.75 AD8316 100 to 2500 49 ±1 50 2.7 to 5.5 8.5 16-Lead CSP $100.00 AD8311 100 to 2500 50 ±0.5 150 2.7 to 5.5 8.5 WLCSP $1.25 AD8302 2,700 60 ±1 60 2.7 to 5.5 19 14-Lead TSSOP $12.00 AD8307 dc to 500 92 ±1 400 2.7 to 5.5 8 8-Lead SOIC/DIP $6.00 AD8310 dc to 440 100 ±1 15 2.7 to 5.5 8 8-Lead SOIC $3.95 AD640 - 50 ±1 10 +/- 4.5 to +/- 7.5 44 20-Lead DIP; 20-Lead LCC; 20-Lead PLCC $36.05 AD8317 1 to 10000 55 ±0.5 6 3 to 5.5 20 8-Lead CSP $3.93 AD8318 1 to 8000 70 ±0.5 10 4.5 to 5.5 68 16-Lead CSP $4.99 AD8319 1 to 10000 45 ±0.5 6 3 to 5.5 22 8-Lead CSP $1.75 ADL5519 1 kHz to 10000 62 ±0.5 6 3 to 5.5 56 32-Lead LFCSP $4.98 * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.