Fast Responding, 45 dB Range,
0.5 GHz to 43.5 GHz Envelope Detector
ADL6010
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Schottky diode detector with linearization
Broadband 50 Ω input impedance
Accurate response from 0.5 GHz to 43.5 GHz with minimal
slope variation
Input range of −30 dBm to +15 dBm, referred to 50 Ω
Excellent temperature stability
ADL6010
4
5
6
3
2
1
RFCM
RFIN
VPOS
VOUT
COMM
LINEARIZER
RFCM
2.1 V/VPEAK (output voltage per input peak voltage) slope at
10 GHz
Figure 1.
Fast envelope bandwidth: 40 MHz
Fast output rise time: 4 ns
Low power consumption: 1.6 mA at 5.0 V
2 mm × 2 mm, 6-lead LFCSP package
APPLICATIONS
Microwave point to point links
Microwave instrumentation
Radar-based measurement systems
GENERAL DESCRIPTION
The ADL6010 is a versatile, broadband envelope detector
covering the microwave spectrum. It provides state-of-the-
art accuracy with very low power consumption (8 mW) in a
simple, easy to use 6-lead format. The output is a baseband
voltage proportional to the instantaneous amplitude of the radio
frequency (RF) input signal. It exhibits minimal slope variation
of the RF input to envelope output transfer function from
0.5 GHz to 43.5 GHz.
A subtle aspect of the balanced detector topology is that no
even-order distortion, caused by nonlinear source loading,
occurs at the input. This is an important benefit in applications
where a low ratio coupler is used to extract a signal sample and
is a significant improvement over traditional diode detectors.
The power equivalent of a fluctuating RF input amplitude can
be extracted by the addition of an rms-to-dc converter IC.
Alternatively, the baseband output can be applied to a suitably
fast analog-to-digital converter (ADC) and the rms value (and
other signal metrics, such as peak to average ratio) calculated in
the digital domain.
The detector cell uses a proprietary eight Schottky diode array
followed by a novel linearizer circuit that creates a linear
voltmeter with an overall scaling factor (or transfer gain) of
nominally ×2.2 relative to the voltage amplitude of the input.
The output response accuracy is insensitive to variation in the
supply voltage, which can range from 4.75 V to 5.25 V. The
ultralow power dissipation contributes to its long-term stability.
Although the ADL6010 is not inherently a power responding
device, it remains convenient to specify the input in this way.
Thus, the permissible input power, relative to a 50 Ω source input
impedance, ranges from −30 dBm to +15 dBm. The corresponding
input voltage amplitudes of 11.2 mV to 1.8 V generate quasi-dc
outputs from about 25 mV to 4 V above common (COMM).
The ADL6010A is specified for operation from −40°C to +85°C,
and the ADL6010S is specified for operation from −55°C to
+125°C. Both are available in a 6-lead, 2 mm × 2 mm LFCSP
package.
Rev. B
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