ADL5513-ACPZ-R2 AD [Analog Devices], ADL5513-ACPZ-R2 Datasheet
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ADL5513-ACPZ-R2
Manufacturer Part Number
ADL5513-ACPZ-R2
Description
1 MHz to 4 GHz, 80 dB Logarithmic Detector/Controller
Manufacturer
AD [Analog Devices]
Datasheet
1.ADL5513-ACPZ-R2.pdf
(12 pages)
Preliminary Technical Data
FEATURES
Wide bandwidth: 1 MHz to 4 GHz
80 dB dynamic range (±3 dB)
Stability over temperature: < ±0.5 dB
Low noise measurement/controller output (VOUT)
Pulse response time: 10 ns
Small footprint package: 3 mm x 3 mm LFCSP
Supply operation: 2.7 to 5.5 V at 30 mA
Fabricated using high speed SiGe process
APPLICATIONS
RF transmitter PA setpoint control and level monitoring
Power monitoring in radiolink transmitters
RSSI measurement in base stations, WLAN, WiMAX, radar
GENERAL DESCRIPTION
The ADL5513 is a demodulating logarithmic amplifier, capable
of accurately converting an RF input signal to a corresponding
decibel-scaled output. It employs the progressive compression
technique over a cascaded amplifier chain, each stage of which
is equipped with a detector cell. The device can be used in
either measurement or controller modes. The ADL5513
maintains accurate log conformance for signals greater than 4
GHz. The input dynamic range is typically 80 dB (re: 50 Ω)
with error less than ±3 dB. The ADL5513 has 10 ns response
time which enables RF burst detection to a pulse rate of beyond
50 MHz. The device provides unprecedented logarithmic
intercept stability vs. ambient temperature conditions. A supply
of 2.7 V to 5.5 V is required to power the device. Current
consumption is less than 30 mA, and decreases to TBD μA
when the device is disabled.
The ADL5513 can be configured to provide a control voltage to
a power amplifier or a measurement output from the VOUT
Rev. PrA 6/08
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Logarithmic Detector/Controller
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
V P OS
V P OS
pin. Because the output can be used for controller applications,
special attention has been paid to minimize wideband noise. In
this mode, the setpoint control voltage is applied to the VSET
pin.
The feedback loop through an RF amplifier is closed via VOUT,
the output of which regulates the amplifier’s output to a
magnitude corresponding to V
to (V
controller applications. As a measurement device, VOUT is
externally connected to VSET to produce an output voltage
V
The logarithmic slope is 20 mV/dB, determined by the VSET
interface. The intercept is -95 dBm (re: 50 Ω, CW input, 900
MHz) using the INHI input. These parameters are very stable
against supply and temperature variations.
IN LO
IN HI
OUT
POS
that increases linear-in-dB with RF input signal amplitude.
1
2
3
4
DET
− 0.1 V) output capability at the VOUT pin, suitable for
FUNCTIONAL BLOCK DIAGRAM
16
5
DET
CO NT RO L
S L O P E
1 MHz to 4 GHz, 80 dB
AD L5513
©2008 Analog Devices, Inc. All rights reserved.
15
6
DET
Figure 1.
RE FE RENC E
BA N D G AP
SET
DET
. The ADL5513 provides 0 V
14
7
DET
Σ
G AIN
BIAS
ADL5513
13
8
I
I
www.analog.com
V
V
12
11
10
9
VO UT
V S E T
COMM
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