2 GHz to 67 GHz,

500 MHz Bandwidth Envelope Detector

Data Sheet

ADL6012

Rev. 0

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FEATURES

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

Flat frequency response with minimal slope variation

±1 dB error up to 43.5 GHz

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

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

FUNCTIONAL BLOCK DIAGRAM

ENVELOPE

DETECTOR

ADL6012

1

10

9

8

7

2

3

4

5

6

ENBL

VPOS

OCOM

VOCM

RFCM

RFIN

RFCM

VENV–

VENV+

DCPL

Figure 1.

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 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 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 ADL6012 is specified for operation from −55°C to +125°C,

and is available in a 10-lead, 3 mm × 2 mm LFCSP.