2 GHz to 67 GHz,
500 MHz Bandwidth Envelope Detector
Data Sheet
ADL6012
FEATURES
FUNCTIONAL BLOCK DIAGRAM
ENBL
1
Over 500 MHz wide envelope bandwidth
Fast response times
0.6 ns output rise time
1.3 ns fall time from 10 dBm to no RF input
0.5 ns output propagation delay (rising edge)
1.3 ns propagation delay at 10 dBm (falling edge)
Broadband 50 Ω input impedance
ADL6012
10 DCPL
2
3
4
RFCM
RFIN
VENV+
VENV–
VOCM
9
8
7
ENVELOPE
DETECTOR
RFCM
Flat frequency response with minimal slope variation
1 dB error up to 43.5 GHz
5
6
VPOS
OCOM
Input range of −25 dBm to +15 dBm up to 43.5 GHz
Quasi differential 100 Ω output interface suitable to drive
100 Ω differential load
Figure 1.
Adjustable output common-mode voltage
Flexible supply voltage: 3.15 V to 5.25 V
3 mm × 2 mm, 10-lead LFCSP
APPLICATIONS
Envelope tracking
Microwave point to point links
Microwave instrumentation
Military radios
Pulse radar receivers
Wideband power amplifier linearization
GENERAL DESCRIPTION
The ADL6012 is a versatile, broadband envelope detector that
operates from 2 GHz to 67 GHz. The combination of a wide,
500 MHz envelope bandwidth and a fast, 0.6 ns rise time makes
the device suitable for a wide range of applications, including
wideband envelope tracking, transmitter local oscillator (LO)
leakage corrections, and high resolution pulse (radar) detection.
The quasi differential output interface formed by the VENV+
and VENV− pins has a matched, 100 Ω differential output
impedance designed to drive a 100 Ω differential load and up to
2 pF of capacitance to ground on each output. The output
interface provides the detected and amplified positive and
negative envelopes, which are level shifted using an externally
applied voltage to the VOCM interface. This configuration
simplifies interfacing to a high speed analog-to-digital
converter (ADC).
The response of the ADL6012 is stable over a wide frequency
range and features excellent temperature stability. Enabled by
propriety technology, the device independently detects the
positive and the negative envelopes of the RF input. Even order
distortion at the RF input due to nonlinear source loading is also
reduced when compared to classic diode detector architectures.
The ADL6012 is specified for operation from −55°C to +125°C,
and is available in a 10-lead, 3 mm × 2 mm LFCSP.
Rev. 0
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