AD606JCHIPS

AD606JCHIPS Datasheet

AD606

Part	Datasheet
AD606JCHIPS	AD606JCHIPS (pdf)

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a 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output AD606 FEATURES Logarithmic Amplifier Performance dBm to +5 dBm Dynamic Range Input Noise Usable to >50 MHz mV/dB Voltage Output On-Chip Low-Pass Output Filter Limiter Performance dB Output Flatness over 80 dB Range Phase Stability at MHz over 80 dB Range Adjustable Output Amplitude Low Power +5 V Single Supply Operation 65 mW Typical Power Consumption CMOS-Compatible Power-Down to 325 typ <5 Enable/Disable Time APPLICATIONS Ultrasound and Sonar Processing Phase-Stable Limiting Amplifier to 100 MHz Received Signal Strength Indicator RSSI Wide Range Signal and Power Measurement PRODUCT DESCRIPTION The AD606 is a complete, monolithic logarithmic amplifier using a 9-stage “successive-detection” technique. It provides both logarithmic and limited outputs. The logarithmic output is from a three-pole post-demodulation low-pass filter and provides a loadable output voltage of V dc to +4 V dc. The logarithmic scaling is such that the output is V for a sinusoidal input of dBm and V at an input of +5 dBm over this range the logarithmic linearity is typically within ± dB. All scaling parameters are proportional to the supply voltage. The AD606 can operate above and below these limits, with reduced linearity, to provide as much as 90 dB of conversion range. A second low-pass filter automatically nulls the input offset of the first stage down to the submicrovolt level. Adding external capacitors to both filters allows operation at input frequencies as low as a few hertz. The AD606’s limiter output provides a hard-limited signal output as a differential current of ± mA from open-collector outputs. In a typical application, both of these outputs are loaded by 200 resistors to provide a voltage gain of more than 90 dB from the input. Transition times are ns, and the phase is stable to within ± 3° at MHz for signals from dBm to +5 dBm. The logarithmic amplifier operates from a single +5 V supply and typically consumes 65 mW. It is enabled by a CMOS logic level voltage input, with a response time of <5 µs. When disabled, the standby power is reduced to <1 mW within 5 µs. The AD606J is specified for the commercial temperature range of 0°C to +70°C and is available in 16-lead plastic DIPs or SOICs. Consult the factory for other packages and temperature ranges. FUNCTIONAL BLOCK DIAGRAM INHI 16 COMM 15 PRUP 14 VPOS 13 FIL1 12 FIL2 11 LADJ 10 LMHI 9 REFERENCE AND POWER-UP 30pF 30pF OFFSET-NULL LOW-PASS FILTER HIGH-END DETECTORS AD606 MAIN SIGNAL PATH 11.15dB/STAGE ONE-POLE FILTER 2pF TWO-POLE SALLEN-KEY FILTER FINAL LIMITER 1 INLO 2 COMM 3 ISUM 4 ILOG Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 5 BFIN 6 VLOG 7 OPCM 8 LMLO One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel 781/329-4700 World Wide Web Site: ORDERING GUIDE Model Temperature Package Range Package Option AD606JN 0°C to +70°C 16-Lead Plastic DIP N-16 AD606JR 0°C to +70°C 16-Lead Narrow-Body R-16A SOIC AD606JR-REEL 0°C to +70°C 13" Tape and Reel R-16A AD606JR-REEL7 0°C to +70°C 7" Tape and Reel R-16A AD606-EB Evaluation Board AD606JCHIPS 0°C to +70°C Die PIN DESCRIPTION Plastic DIP N and Small Outline R Packages INLO 1 16 INHI COMM 2 15 COMM ISUM 3 14 PRUP ILOG 4 AD606 13 VPOS TOP VIEW BFIN 5 Not to Scale 12 FIL1 VLOG 6 11 FIL2 OPCM 7 10 LADJ LMLO 8 9 LMHI AD606 PIN FUNCTION DESCRIPTIONS Pin Mnemonic Function 1 INLO 2 COMM 3 ISUM 4 ILOG 5 BFIN 6 VLOG 7 OPCM 8 LMLO 9 LMHI 10 LADJ 11 FIL1 12 FIL2 13 VPOS 14 PRUP 15 COMM 16 INHI DIFFERENTIAL RF INPUT dBm to +5 dBm, Inverting, AC Coupled. POWER SUPPLY COMMON Connect to Ground.

PDF Datasheet Preview

a 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output

AD606

FEATURES Logarithmic Amplifier Performance
dBm to +5 dBm Dynamic Range Input Noise Usable to >50 MHz mV/dB Voltage Output On-Chip Low-Pass Output Filter Limiter Performance dB Output Flatness over 80 dB Range Phase Stability at MHz over 80 dB Range Adjustable Output Amplitude Low Power +5 V Single Supply Operation 65 mW Typical Power Consumption CMOS-Compatible Power-Down to 325 typ <5 Enable/Disable Time

APPLICATIONS Ultrasound and Sonar Processing Phase-Stable Limiting Amplifier to 100 MHz Received Signal Strength Indicator RSSI Wide Range Signal and Power Measurement

PRODUCT DESCRIPTION The AD606 is a complete, monolithic logarithmic amplifier using a 9-stage “successive-detection” technique. It provides both logarithmic and limited outputs. The logarithmic output is from a three-pole post-demodulation low-pass filter and provides
a loadable output voltage of V dc to +4 V dc. The logarithmic scaling is such that the output is V for a sinusoidal input of dBm and V at an input of +5 dBm over this range the logarithmic linearity is typically within ± dB. All scaling parameters are proportional to the supply voltage.

The AD606 can operate above and below these limits, with reduced linearity, to provide as much as 90 dB of conversion range. A second low-pass filter automatically nulls the input offset of the first stage down to the submicrovolt level. Adding external capacitors to both filters allows operation at input frequencies as low as a few hertz.

The AD606’s limiter output provides a hard-limited signal output as a differential current of ± mA from open-collector outputs. In a typical application, both of these outputs are loaded by 200 resistors to provide a voltage gain of more than 90 dB from the input. Transition times are ns, and the phase is stable to within ± 3° at MHz for signals from dBm to +5 dBm.

The logarithmic amplifier operates from a single +5 V supply and typically consumes 65 mW. It is enabled by a CMOS logic level voltage input, with a response time of <5 µs. When disabled, the standby power is reduced to <1 mW within 5 µs.

The AD606J is specified for the commercial temperature range of 0°C to +70°C and is available in 16-lead plastic DIPs or SOICs. Consult the factory for other packages and temperature ranges.

FUNCTIONAL BLOCK DIAGRAM

INHI 16

COMM 15

PRUP 14

VPOS 13

FIL1 12

FIL2 11

LADJ 10

LMHI 9

REFERENCE AND POWER-UP
30pF
30pF

OFFSET-NULL LOW-PASS FILTER

HIGH-END DETECTORS

AD606

MAIN SIGNAL PATH 11.15dB/STAGE

ONE-POLE FILTER
2pF TWO-POLE SALLEN-KEY FILTER

FINAL LIMITER
1 INLO
2 COMM
3 ISUM
4 ILOG

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
5 BFIN
6 VLOG
7 OPCM
8 LMLO

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel 781/329-4700 World Wide Web Site:
ORDERING GUIDE

Model

Temperature Package

Range

Package Option

AD606JN
0°C to +70°C 16-Lead Plastic DIP N-16

AD606JR
0°C to +70°C 16-Lead Narrow-Body R-16A

SOIC

AD606JR-REEL 0°C to +70°C 13" Tape and Reel R-16A

AD606JR-REEL7 0°C to +70°C 7" Tape and Reel R-16A

AD606-EB

Evaluation Board

AD606JCHIPS 0°C to +70°C Die

PIN DESCRIPTION Plastic DIP N and

Small Outline R Packages

INLO 1
16 INHI

COMM 2
15 COMM

ISUM 3
14 PRUP

ILOG 4 AD606 13 VPOS TOP VIEW

BFIN 5 Not to Scale 12 FIL1

VLOG 6
11 FIL2

OPCM 7
10 LADJ

LMLO 8
9 LMHI

AD606

PIN FUNCTION DESCRIPTIONS

Pin Mnemonic Function
1 INLO 2 COMM 3 ISUM 4 ILOG 5 BFIN 6 VLOG 7 OPCM 8 LMLO
9 LMHI
10 LADJ 11 FIL1
12 FIL2 13 VPOS 14 PRUP
15 COMM 16 INHI

DIFFERENTIAL RF INPUT dBm to +5 dBm, Inverting, AC Coupled.

POWER SUPPLY COMMON Connect to Ground.

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Datasheet ID: AD606JCHIPS 517718